Patent EA-004612-B1 (EA)
Title: Method and installation for building a highway and a highway
IPC: E01C1/00
Filed: 2001-11-15
Abstract: 1. A method for constructing an expressway in the form of an elevated road whose length extends at least partly above an existing motorway; which method comprises the steps of: implementation of a foundation portion of load-bearing supports, erection of the load-bearing supports on the foundation portion, placement of girders on the load-bearing supports and mounting of a span structure; erection of the load-bearing supports on the foundation portion being done when at least a portion of the technological equipment to be used for the works is arranged at the level of the upper load-bearing working surface of a gantry-type mobile installation, which installation is preferably self-propelled and consists, for example, of sections disposed in-series along its length; the mobile supports of said installation being disposed within the allocated land lot of the existing motorway; the girders being mounted on the load-bearing supports with at least one hoisting mechanism used as the technological equipment; said hoisting mechanism being preferably of the mobile crane type disposed at least on one section of the gantry-type mobile installation; height of clearance under said installation, in its operation position, being sufficient for allowing traffic on the existing motorway; at least a part of the technological operations for constructing the expressway being carried out such that traffic on the existing road may proceed. 2. The method as claimed in claim 1, wherein a part of the technological equipment for implementing of at least the foundation portion of the load-bearing supports is disposed at the level of the existing motorway. 3. The method as claimed in claim 1, wherein the elevated road longitudinal axis, at least along a portion of its length, is aligned along the longitudinal axis of the existing motorway. 4. The method as claimed in claim 1, wherein the elevated road longitudinal axis, at least along a portion of its length, is aligned in parallel with the longitudinal axis of the existing motorway. 5. The method as claimed in claim 1, wherein the elevated road longitudinal axis, at least along a portion of its length, is aligned at an angle to the longitudinal axis of the existing motorway. 6. The method as claimed in claim 1, wherein a girder is mounted in the course of positioning of the upper load-bearing working surface of at least one section of the gantry-type mobile installation immediately under the place where works are being executed, with a shift of its section that bears the hoisting mechanism from the designed position of the mounted girder in the direction of construction of the elevated motorway to a value that will allow operation of the hoisting mechanism positioned on said section. 7. The method as claimed in any one of claims 1-6, wherein an elevated road span structure is mounted by laying at least one section of the span structure by the hoisting mechanism positioned on the upper bearing working surface of the gantry-type mobile installation. 8. The method as claimed in any one of claims 1-6, wherein the elevated road span structure is mounted by laying the span structure sections by the hoisting mechanism positioned on the already constructed portion of the elevated road. 9. The method as claimed in any one of claims 1-7, wherein the span structure sections are made of metal; the elevated road span structure mounting is performed by pulling over said metallic pre-assembled sections, whereby the upper load-bearing working surface of at least one section of the gantry-type mobile installation will be used as the intermediate support for said pre-assembled sections. 10. The method as claimed in claim 9, wherein in pulling over said metallic sections, at least on one section of the mobile gantry-type installation remains fixed, and at last one section of the upper load-bearing working surface of the gantry-type mobile installation is provided with an anti-friction coating to ensure the carrying property of the metallic sections in the course of pulling-over. 11. The method as claimed in claim 10, wherein at least on one section of the upper load-bearing working surface of the gantry-type mobile installation positioned are carriages to ensure the carrying property in the course of pulling over of the metallic sections. 12. The method as claimed in claim 9, wherein the span structure metallic sections are preferably adapted to be borne by at least one section of the upper load-bearing working surface of the gantry-type mobile installation, which section is moved together with the span structure sections in the course of the pulling over step. 13. The method as claimed in any one of claims 1-12, wherein alignment of the elevated roadway, including the turn radii, inclination angles on the curvilinear portions thereof is selected within the existing land lot to provide safety for the express traffic. 14. The method as claimed in claim 1, wherein the foundation portion of the load-bearing supports is made as monolithic. 15. The method as claimed in claim 1, wherein the foundation portion of the load-bearing supports is made as assembled. 16. The method as claimed in claim 1, wherein the foundation portion of the load-bearing supports is made as assembled-monolithic. 17. The method as claimed in claim 1, wherein the load-bearing supports are made of metalworks. 18. The method as claimed in claim 1, wherein the load-bearing supports are implemented using the retained, preferably metal formworks. 19. The method as claimed in claim I, wherein for the span structure used are the hollow metal beams, for example the beams having I- or trapezoidal cross-section. 20. The method as claimed in any one of claims 1-19, wherein at the lateral sides of at least one section of the gantry-type mobile installation, arranged is a safety guard to provide safety for traffic on the existing motorway. 21. The method as claimed in any one of claims 1-20, wherein the span structure girders are conveyed to the construction site via the already constructed portion of the elevated road continuously, and are laid at once in their designed position. 22. The method as claimed in any one of claims 1-20, wherein the span structure girders are conveyed to the construction site with subsequent unloading at least at one of the lateral sides of the already constructed portion of the elevated road. 23. The method as claimed in any one of claims 1-20, wherein the span structure girders are conveyed to the construction site and stored thereat for further unloading at least at one of the lateral sides of at least one section of the gantry-type mobile installation. 24. The method as claimed in any one of claims 1-23, wherein a translucent cover having a curved configuration to provide the aired space thereunder is implemented at least over a portion of the elevated road length. 25. The method as claimed in claim 24, wherein the translucent cover has a broken configuration to provide the aired space thereunder. 26. The method as claimed in any one of claims 1-25, wherein emergency parking lots are arranged at least along a portion of the elevated road length, preferably over the load-bearing supports. 27. The method as claimed in any one of claims 1-26, wherein the elevated road is erected with roadways at two levels, preferably one above another to provide the one-way traffic on the road at each one of the levels. 28. The method as claimed in claim 27, wherein exit ways to the motorway that is situated below the constructed expressway are provided for. 29. The method as claimed in any one of claims 1-6, wherein at least one section of the gantry-type mobile installation is shifted at least to one-fourth of the span value from under a span being constructed until the latter will be installed in a given girder span. 30. The method as claimed in any one of claims 1-12, wherein at least one section of the gantry-type installation is shifted under the designed position of the next elevated road span structure after completion of pulling-over of sections of the preceding span structure. 31. The method as claimed in any one of claims 1-8, wherein least one section of the gantry-type installation is shifted to the designed position of the next elevated road span structure upon completion of mounting. 32. The method as claimed in any one of claims 1-31, wherein if construction of the elevated road encounters an obstacle, the elevated road is constructed until the obstacle is reached, then at least one section of the gantry-type installation is positioned at the opposite side of the obstacle, and construction of the elevated road proceeds with the use of the technological equipment also positioned on the already constructed portion of the elevated road. 33. The method as claimed in claim 32, wherein the technological equipment is additionally positioned at least on one section of the gantry-type installation. 34. The method as claimed in claim 1, wherein on a road crossing, positioned is at least one additional section of the gantry-type installation to provide traffic thereon in the established directions on said crossing; and above said crossing, a span structure is mounted without disabling that portion of the existing motorway. 35. The method as claimed in claim 34, wherein after completion of mounting of the span structure above the crossing, said additional section is moved mainly along the elevated road axis. 36. The method as claimed in claim 34, wherein after completion of mounting of the span structure above the crossing, said additional section is moved mainly at an angle to the elevated road axis, in one of directions of the crossing roads. 37. The method as claimed in claim 34, wherein on at least one section of the gantry-type mobile installation, at least at one of its lateral sides, positioned is a safety guard in the form of a panel. 38. The method as claimed in claim 34, wherein at least beside one section of the gantry-ty