Prefabrication type high level road structure

Abstract: The present invention relates to a prefabrication type high level road structure, comprising : an underground section (2) for stably supporting the total weight of the high level structure and vehicles thereon and for distributing the corresponding total weight ; and a support section (4) comprising a plurality of supports (400,420) spaced-apart from one another by a predetermined distance and vertically standing on a road on which the high level road is constructed, and a plurality of cross-beams (412) provided on the upper portions of the supports for supporting a pavement section. This structure is characterized in that : the underground section (2) comprises basic members (200) forming two parallel rows extending along the center line of the road, at least one steel frame (204,206) located in the space formed between the basic members, and concrete poured in said space for burying the steel frame, the supports (400,420) being rigidly connected to the assembly comprising the basic members, steel frame and concrete.

Description: TECHNICAL FIELD The present invention relates to a prefabrication type high level road structure and particularly to an improved prefabrication type high level road structure by which a high level road can be more easily and rapidly constructed without causing a traffic jam at the construction site of a high level road by transferring elements of the road structure which are fabricated in a remote site and assembling the elements at the construction site. BACKGROUND ART As well known to those skilled in the art, a high level road has many advantages to a country having a small area. That is, the high level road has a relatively high traffic jam-distributing effect per a unit area of the road. Particularly, in an attempt to effectively cope with the problems that the number of cars is sharply increased, the high level road becomes a good solution for a heavy traffic jam in a limited area. In addition, for resolving the above-mentioned traffic jam problems, a predetermined area should be additionally expanded for a new road. A prefabricated high level road structure is known from, e.g., FR 2 711 379 A. However, the conventional construction method of a high level road has many disadvantages. That is, since the conventional construction method is directed to setting up concrete-made supports at the center or at both sides of the road, on which a high level road is constructed, assembling steel beams and supports around the concrete-made support, and fabricating a concrete-made road surface thereon, the road occupying rate is very high at the construction site for constructing the high level road, and the construction period is very lengthy, thus increasing the construction cost. Due to the above-mentioned problems, the construction cost is increased, and a heavy traffic jam is caused at the construction site of the high level road during the construction period of the same. Therefore, a new construction method of a high level road is urgently needed in the industrial field so as to overcome the above-mentioned problems. As requirements for a new construction method, the elements of the high level road structure are previously fabricated at a remote site and transferred to the construction site and are then assembled at the construction site. So as to satisfy the above-mentioned requirement, a prefabrication type high level road construction method may be considered. The prefabrication type high level road has advantages in that it is possible to shorten the construction period, and to reduce the construction cost. In addition, defected parts can be rapidly changed. The prefabrication type high level road construction is not known to people. There is only one method for temporally fabricating such a road for forming a passenger path at the construction site or the like. The important thing of the prefabrication type high level road construction method is how to effectively distribute the total weight applied to the road surface. The total weight and load are applied to the underground section through the supports supporting the road. It is necessary to minimize the occupying area of the road and to simplify the structure of the road, thus improving the assembly process and the like. DISCLOSURE OF THE INVENTION Accordingly, it is an object of the present invention to provide a prefabrication type high level road structure, which overcomes the problems encountered in a conventional high level road structure. It is another object of the present invention to provide a prefabrication type high level road structure which is significantly improved, as compared to the conventional art which is directed to temporally setting up a high level road so as to provide a temporary road. It is another object of the present invention to provide a prefabrication type high level road structure by which the weight of the cars applied to the supports through the road area can be significantly/effectively reduced. That is, it is possible to reduce the road utilizing rate of the road without additionally expanding the area for a new high level road. Moreover, it is possible to more easily construct a high level road. It is another object of the present invention to provide a prefabrication type high level road structure by which a more stable and reliable high level road can be constructed by effectively distributing the total weight of the high level road. It is another object of the present invention to provide a prefabrication type high level road structure by which a construction period of a high level road can be significantly reduced, and it is possible to construct a high level road at a limited area. To achieve the above objects, there is provided a prefabrication type high level road structure, according to the features of claim 1. Others features of the prefabrication type high level road structure according to embodiments of the present invention are disclosed in the dependent claims. Additional advantages, and objects of the invention will be set forth in part in the description which follows. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of the prefabrication type high level road structure shown in European application n° 96 927 920.7; Figure 2 is a perspective view showing an underground section and a support section of a prefabrication type high level road structure according to a first embodiment of the present invention; Figure 3 is a partial perspective view showing the underground of Figure 2; Figure 4 is a side cross-sectional view of Figure 2; Figure 5 is a side cross-sectional view showing the inner curved section of an underground section according to a second embodiment; Figure 6 is a perspective view showing a reinforcing structure between an underground section and supports, according to a third embodiment; Figure 7 is an disassembled perspective view showing the support shown in Figure 6; Figure 8 is a partial perspective view showing another embodiment of the reinforcing structure between the underground section and the support shown in Figure 6 ; Figure 9 is a plane view showing a fourth embodiment of the present invention; Figure 10 (A) is a fault plane view showing a basic constructing state of the underground section according to the fourth embodiment of the present invention; Figure 11(B) is a plane view of Figure 10(A); and Figure 12 is a perspective view showing a constructing state according to the fourth embodiment of the present invention. MODES FOR CARRYING OUT THE INVENTION Figure 1 is an exploded perspective view showing the structure of the prefabrication type high level road disclosed in European patent application n° 96 927 920.7, the present application being a division thereof. This high level road comprises an underground section 2 which is basically buried under the ground, a support section 4 comprising a plurality of supports 40 which stand on a road at a predetermined interval from one another, a pavement section 6 formed on the support section 4, and a wall section 8 provided at both sides of the high level road and being integral with the support section 4. The underground section 2 includes a plurality of rails 20 which are parallely buried under the ground and a plurality of support rails 22 which are perpendicular to the buried rails 20. The support section 4 perpendicularly stands at the center of the support rails 22. This section comprises supports 40 the lower end of which is rigidly connected to the support rails 22 using bolts and nuts, lower ribs 42 connected between the supports 40 and the support rails 22 at both sides of the lower portion of the supports 40, cross beams 44 placed on the upper portion of the supports 40 in a T-shaped form and connected to the supports 40 using bolts and nuts, and upper ribs 46 integral with the upper portion of the supports 40 for supporting both sides of the cross beams 44. The pavement section 6 is formed on the upper portion of the cross beams 44 placed on the supports 40. It comprises a plurality of parallely spaced-apart bars 60 provided on the upper portion of the cross beams 44, and a plurality of upper assembly members 62 which are placed on the bars 60. The wall section 8 includes wall supports 80 vertically formed at both sides of the cross beams 44, and wall elements 82 connected between the wall supports 80 for forming a wall. Figures 2 to 4 show a first embodiment of the present invention. Figures 2 shows the construction of the first embodiment of the present invention, the underground section 2 of which includes pairs of opposed basic members 200 which are disposed along a road in series. The pairs of basic members 200 are opposingly disposed along the center line of the road, and steel and concrete are provided therebetween and form a predetermined construction which is capable of stably supporting the support section 4. In addition, the support section 4 includes supports 400 which are accurately and vertically inserted at predetermined portions of the basic members 200 which are opposingly disposed. The basic members 200 for engaging with the supports 400 include grooves 202a formed at their intermediate portions and grooves 202b formed at each of their ends. The supports 400 include lower support portions 402 outwardly protruding at their two end sides with respect to the structure of the basic members 200 and accurately inserted into the grooves 202a and 202b. In addition, a plurality of engaging holes 404 into which the steel 204 is inserted and arranged are formed at the lower support portions 402 of the supports 400, the steel 204 passing through the lower support portions 402 being buried within the concrete provided between the basic members 200. A spacer 406 for limiting the arranging space between the basic members 200 is integrally protruded at the bottom portion of the lower support portion 402. In addition, the steel arranged between the basic members 200 may be separated into an upper steel 204 and a lower steel 206. In this case, the lower steel 206 is individually arranged irrespective of the upper steel 204. The supports 400 are rigidly supported by the basic members 200. More preferably, a wedge rod 208 is inserted in the outer side of the lower support portions 402 which are outwardly extended with respect to the outside of the basic members 200. The wedge rod 208 is parallelogram-shaped and is formed of a steel-concrete. A wedge groove 408 is formed at the lower outer portion of the lower support portions 402 for a more rigid engagement with the latter. In the upper rib 410 of the supports 400, a plurality of nuts and bolts are buried as in the embodiment shown in Figure 1, and the cross beams 412 placed thereon are more stable supported. Figure 3 shows the construction of the basic members 200. The basic members 200 have a predetermined construction in order to define a surface engaged with the concrete provided between the curved portion. In addition, the basic members 200 may be engaged with the steel 204 by extending their parts 210 so as to increase the strength with the concrete which is provided at the construction site. In addition, the groove 202a formed at the intermediate portion of the basic members 200 remains its original form. However, since the groove 202b formed at both ends of one basic member has a semi-portion, when it is connected to the groove 202b of another basic member 200, a complete groove is obtained. Meanwhile, a through hole 212 is formed under the lower portion of the grooves 202a and 202b, into which an anchor 214 is inserted. Figure 4 shows a side cross-sectional view of the assembling construction according to the first embodiment of the present invention. As shown in this Figure, the anchor 214 is inserted into the wedge groove 408 of the supports 400, so that the connection between the basic members 200 and the lower support portions 402 can be more stable. In the space formed by the basic members 200, the upper steel 204 and the lower steel 206 are arranged. The upper steel 204 and the lower steel 206 are not always separated; they may be united. The upper and lower steels 204 and 206 are connected with the buried parts 210 which extended to the inner portion of the basic members 200, so that the upper and lower steels 204 and 206 can be more stable with respect to the basic members 200. Figure 5 shows a side cross-sectional view of the assembling construction according to the second embodiment of the present invention. The upper and lower steels 204 and 206 are respectively formed in an upside-down trapezoid shape and a diamond shape. In addition, the steel 204 is inserted into engaging holes 404 of the supports 400 which are engaged in the grooves 202a and 202b of the basic members 200. Preferably, a predetermined shaped pipe is inserted into the engaging holes 404 and then the concrete is provided therein during the precasting of the support 400. Since the supports 400 are supported by the basic members 200 in cooperation with the spacers 406 protruding at the intermediate portion of the lower support portions 402 when said supports 400 are assembled with the basic members 200, a predetermided distance between the basic members 200 is obtained. As shown in Figures 4 and 5, the wedge rods 208 are inserted into the wedge groove 408 in the lower support portions 402 of the supports 400. The anchors 214 inserted into the through holes 212 of the basic members 200 through the wedge grooves 408 of the lower support portions 402 are supported by the wedge rods 208. Thereafter, the upper portion of the basic members 200 and the lower support portions 402 are buried with soil or the like, and form the buried layer G. In this embodiment, the basic members, the supports, the wedge rods and the like are built in the steel concrete precasting method at another site. Therefore, at the construction site, they are only assembled, thus shortening the construction period and reducing the construction site occupying area. The pavement section 6 and the wall section 8 are installed on the supports 400 which are planted in the underground section 2 in the same manner as in the embodiment shown in Figure 1. Figure 6 to 8 show a prefabrication type high level road structure according to the third embodiment of the present invention. Figure 6 shows that the support 400 is integrally assembled with the basic members 200. The support 400 includes outwardly extended protrusions 414 protruding from its lower support portions 402 which are inserted into the groove 202a of the basic members 200, outwardly extended protrusions 216 being provided on the basic members at the periphery of the grooves 202a. The thusly outwardly extended protrusions 216 and 414 are surrounded by prevention wall bodies 218 each defining a predetermined space. In addition, concrete is provided in the above-mentioned space, so that the lower support portions of the support 400 are integral with the basic members 200. Meanwhile, reinforcing steel 222 is crossingly arranged in the groove 202b of the basic members 200, a concrete reinforcing support 220 provided at the periphery of the reinforcing steel 222 being indicated by a one-dot-one-line. Here, the protrusions 216 are outwardly and partially extended at the periphery of the grooves 202b so that the reinforcing steel 222 and the basic members 200 can be united more stable, thus uniting the protusions 216 with the reinforcing steel 222. The concrete reinforcing support 220 is crossingly extended with respect to the basic members 200, thus achieving a more stable ground condition and an excellent load distribution effect. Parts 416 of the buried steel extend between the lower support portions 402 of the support 400, as shown in Figure 7. The spacer 406 is integrally extended at the lower side of the support portions 402, and a wedge groove 408 is formed at the outer lower part of each lower support portion 402. Besides, the upper end of the support 400 is changed in order that the cross beam 412 be fixed by the upper rib 410. Of course, the pavement section 6 and the wall section 8 are constructed on the cross beam 412 in the same manner as in the embodiment shown in Figure 1. As shown in Figure 8, the support 400 is assembled to the basic members 200. The underground section 2 includes pairs of basic members 200 which are opposingly arranged along the road, the basic members 200 including grooves 202a and 202b which are engaged with the supports 400 of the support section 4. The shown support 400 is inserted into the groove 202a of the basic members 200, and the reinforcing steel 222 is crossingly arranged in the groove 202b. The reinforcing steel 222 is engaged with the upper and lower steels 204 and 206 which are spatially arranged between the basic members 200, and the prevention walls 218 surround the arrangement, concrete being provided therein. The wedge rods 208 are inserted into the wedge grooves 408 of the support 400 before assembling the prevention walls 218. In addition, the prevention walls 218 are preferably engaged by pressing the upper portion of the wedge rods 208, and the prevention walls 218 include a slot 224 in which a wedge rod 208 is engaged. In addition, a part of the buried steel 416 of the support 400 is integrally engaged with the upper and lower steels 204 and 206 which are arranged between the basic members 200. The above-described construction may be used for a softly curved high level road in a view that the connection portion of the basic members 200 can be more stable. The construction method of the prefabrication type high level road structure according to the above embodiments of the present invention is as follows. Underground section formation step A predetermined area is evacuated at the existing road, and rocks and the like are provided in the thusly evacuated area, and then the surface H of the evacuated area is made flat, and the opposed basic members are spaced-apart from one another and arranged in parallel along the road at which the high level road is to be built, and then the underground section is constructed. Support formation step The lower portion of the supports is engaged into the corresponding groove of the basic members in order to build the support section 4, and concrete is provided in the space defined by the prevention wall members for connecting the basic members and the supports to be stable and strong. The distance between the basic members is referred to as the spacer formed at the intermediate portion of the lower surface of the lower support portions. Ground stabilizing step Concrete is provided in the space defined between the basic members and the prevention walls, so that the basic members and the supports become stable, thus stabilizing the ground at which the support section is to be built. Pavement section formation step The cross beams are mounted on the supports and are connected to one another, and the upper assemblies are mounted in order on said cross beams and connected to one another, thus forming the pavement section. Road surface pavement step The upper surface of the upper assembly is paved in the conventional method. Finishing step The road evacuated in the underground section formation step is filled by the soil, thus substantially embedding the basic members within the underground section. The subject matters of the present invention are not limited to the above-mentioned embodiments which are directed to planting the supports between the opposed basic members. Figures 9 to 12 show a prefabrication type high level road structure according to a fourth embodiment of the present invention. In the fourth embodiment, the underground section 2 includes a plurality of concrete rails 226 which are arranged in parallel. The above-described construction is useful for evenly distributing the load of the structure and cars to the surrounding area of the road when subway structure of communication cable structure are formed therein. The support section 4 includes hollow supports 420 which are vertically installed at the intermediate portion of lengthy supports 418, which can be crossingly installed with respect to the concrete rails 226. The concrete rails 226 which are arranged in parallel include protrusions 228 mating with the lower portion of the lengthy supports 418. The above-mentioned structure is shown in Figure 12. The lengthy supports 418 have buried steel parts 414 at both sides of their intermediate portion, the hollow supports 420 including a lower side connection portion 422 which is engaged with the lower center portion of said lengthy supports. In addition, the upper surface of the hollow supports 420 is connected with the upper connection portion 424 fixed to the lower surface of the corresponding cross beam 412. The hollow supports 420 are engaged with engaging holes 426 formed on the outer portion of the lower and upper connection portions 422 and 424 using rivets, and are stably fixed in the horizontal and vertical directions. Meanwhile, after a pair of basic members 200 are installed between the lengthy supports 418, and concrete is provided in the space defined between the lengthy supports 418, the upper steel 204 is integrally united. The basic members 200 are arranged in their length direction, and a part of their steel portions 210 is engaged with the upper steel 204. In this embodiment, the excavation of the surface for the underground section 2 may be at the place where the concrete rails 226 are installed. The lengthy supports 418 are arranged on the upper surface of the concrete rails 226 which are arranged in the excavated region, and the concrete rails 226 are arranged at predetermined places so that the lower portion of the lengthy supports is inserted between the protrusions 228 of the concrete rails 226, as shown in Figure 12. When the assembly is finished, the concrete rails 226 are buried by soil, and the lengthy supports 418 form a part of the road. The construction method of a prefabrication type high level road according to the fourth embodiment will now be explained. Underground section formation step A predetermined area where the concrete rails can be arranged is evacuated at the existing road, and the concrete rails are arranged in parallel for forming the underground section. Support formation step The lengthy supports are crossingly arranged on the concrete rails which extend in parallel, and the hollow supports are vertically connected to the lower connection section which is disposed at the intermediate portion of the lengthy supports, the support section being thus formed. Ground stabilizing step Pairs of the basic members are opposingly arranged between the lengthy supports of the support section, and the steel is arranged between said basic members, thus stabilizing the ground where the supports are to be installed. Pavement section formation step The cross beams are mounted on the supports and are connected to one another, and the upper assemblies are mounted in order on said cross beams and connected to one another, thus forming the pavement section. Road surface pavement step The upper surface of the upper assembly is paved in the conventional method. Finishing step The road evacuated in the underground section formation step is filled by the soil, thus substantially embedding the basic members of the underground section. As described above, the present invention is basically directed to significantly reducing the construction period. In particular, all elements which are assembled at the construction site can be made at another site far away from the construction site of the high level road, so that it is possible to standardize the size and requirement of the elements. In addition, it is possible to reduce the occupying area of the construction site by bringing the necessary elements from another area where the elements are made to the construction site of the high level road, thus preventing the traffic jam at the construction site. In addition, the present invention is directed to using an "I"-shaped steel or a precasted concrete construction which has a high strength and is light in weight, so that it is possible to more easily convey and handle it. Moreover, since all the elements are integrally connected to the underground section which is buried under the ground, the structure of the high level road is stable against earthquake. Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as described in the accompanying claims.

Claims: A prefabrication type high level road structure, comprising : an underground section (2) for stably supporting the total weight of the high level structure and vehicles thereon and for distributing the corresponding total weight ; and a support section (4) comprising a plurality of supports (400,420) spaced-apart from one another in the direction of the road by a predetermined distance and vertically standing on the road on which the high level road is constructed, and a plurality of cross-beams (412) provided on the upper portions of the supports for supporting a pavement section, characterized in that : the underground section (2) comprises a pair of opposed basic members (200) forming two parallel rows extending along the center line of the road, at least one steel frame (204,206) perpendicularly located in the space formed between the basic members and enclosing longitudinally extending reinforcing stell bars, and concrete poured in said space for burying the steel reinforcement, the supports (400,420) being rigidly connected to the assembly comprising the basic members, steel reinforcement and concrete. The structure according to claim 1, characterized in that the basic members (200) are opposed two by two and comprise one intermediate groove (202a) in their intermediate portion and one end groove (202b) at each end. The structure according to claim 2, characterized in that the supports (400) have an enlarged lower portion (402) inserted in the intermediate grooves (202a) of two opposed basic members (200), the lower portions of the supports passing above the steel frame (204) and being integral with the concrete. The structure according to claim 3, characterized in that the enlarged lower portions (402) of the supports (400) comprise a predeterminated number of engaging holes (404) into which the steel frame (204) passes. The structure according to claim 3 or 4, characterized in that the enlarged lower portions (402) of the supports (400) extend outside the basic members (200) and are supported by a wedge rod (208). The structure according to claim 5, characterized in that the enlarged lower portions (402) of the supports (400) comprise a wedge groove (408) mating with the wedge rod (208). The structure according to claim 5 or 6, characterized in that the wedge rod (208) is parallelogram-shaped in cross-section. The structure according to any one of claims 5 to 7, characterized in that anchors (214) inserted into holes (212) in the basic members (200) pass through the corresponding wedge groove (408), whereby the engagement between the basic members (200) and the supports (400) is stable. The structure according to any one of claims 2 to 8, characterized in that a crossing steel (222) is inserted in the end grooves (202b) of two opposed pairs of adjacent basic members (200) whereas its end portions are surrounded by prevention walls (218) defining internal spaces filled with concrete. The structure according to claim 1, characterized in that the underground section (2) further comprises concrete rails (226) parallel to the basic members (200) and lengthy supports (418) lying on the concrete rails (226) perpendicularly thereto, the basic members (200) being arranged between the lengthy supports and the supports (420) being installed on the intermediate portion of said lengthy supports. The structure according to claim 10, characterized in that steel parts (414) are protruding on the opposed side surfaces of the intermediate portion of the lengthy supports (418) for a rigid connection with the concrete poured between the basic members (200) .

Inventors: HONG WAN-KI, HONG, WAN-KI
Applicants: HONG WAN-KI, HONG, WAN-KI
Application year: 1996
Main classification: E01D19
IPC codes: E01D19, E01D21, E01D2