Abstract:
The present invention discloses a shock-resisting steel concrete structure including an external steel-plate frame covered onto a corresponding steel body, and a concrete filled up into the external steel-plate frame for engaging the steel bodies, steel wires and external steel-plates. The steel wires are used for connecting the steel bodies and woven into a mesh shape. Connecting wires are provided for connecting and engaging the external steel-plate frame and the steel bodies when the concrete is filled. A structure with a tight connection of the steel bodies, external steel-plate frames and concrete provides a better shock resistance, and effectively prevents accidents caused by concrete spalling.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    (a) Field of the Invention 
         [0002]    The present invention relates to a shock-resisting steel concrete structure, and more particularly to a shock-resisting steel concrete structure having a better shock resistance and effectively preventing accidents caused by a spalling concrete at external layers of the structure. 
         [0003]    (b) Description of the Prior Art 
         [0004]    Referring to  FIG. 1  for a schematic view of a basic structure of a concrete-filled column of a construction in accordance with a prior art, a concrete body  9  is formed by consolidating a steel bar framework  91  and a concrete  92  of a totally different material enclosed onto the exterior of the steel bar framework  91  by grouting to produce a heterogeneous construction material, wherein the composition of the concrete  92  is very extensive, and basically includes mixing materials such as cement (including Portland cement and sulfate resisting cement, etc), sand, and coarse and fine aggregates and other materials (such as fly ash, chelating agent and accelerating agent, if needed). 
         [0005]    Since concretes made of different materials provide different functions for various specific applications, the binding effect of the concrete  92  increases the structural firmness and the capability of absorbing and dispersing energies of the steel bar framework  91 . After the concrete  92  at external layers is spalled, the column core (or steel bar framework  91 ) still has the binding effect. However, if the pulling stress exceeds the pulling strength of the concrete in an earthquake, the concrete will be cracked. In the beginning, the crack is short and small, but it will increase and extend into the cross-section of the beams and columns. After the concrete construction is damaged by the earthquake, the damage will be extended to a portion or the whole of the construction. 
         [0006]    After the concrete body is cracked, the concrete generally starts spalling from the external layer of the steel bar framework. If the spalling of the concrete body occurs at a high position of the construction or a floor, people or equipments below the concrete body may be hit directly by falling concrete lumps. 
         [0007]    In a prior art, the steel bar framework of a construction and the concrete at the external layer are affected by different climates, and a void layer or a crevice may be formed easily by thermal expansions and contractions or after a light earthquake, such that outside air may enter into the concrete, or even go deep into the steel bar framework to corrode or damage the steel bar framework. In other words, a damage point is produced in the whole construction, and a more serious disaster may occur during a bigger earthquake. 
       SUMMARY OF THE INVENTION 
       [0008]    The primary objective of the present invention is to overcome the shortcomings of the prior art by providing a shock-resisting steel concrete structure with a good shock resistance for preventing concretes from spalling, and such structure is particularly applicable for construction beams and columns. 
         [0009]    To achieve the foregoing objective, the present invention provides a shock-resisting steel concrete structure, including an external steel-plate frame covered onto the exterior of a steel body and a concrete filled up into the external steel-plate frame and engaged with a steel body, a steel wire and an external steel-plate frame, and the external steel-plate frame is comprised of a plurality of steel plates enclosed around the exterior of the corresponding steel bodies respectively, and the external steel-plate frame includes a sunken/protruded portion, and each plate of the steel body is woven by steel wires into a mesh shape, and a connecting wire is connected between each external steel-plate frame and the steel body for their engagement when the concrete is filled. 
         [0010]    Therefore, a structure for tightly connecting the steel body, the external steel-plate frame and the concrete provides a better shock resistance for the shock-resisting steel concrete structure to prevent the concrete from being damaged, the steel body from being corroded, and also prevent accidents caused by the spalling concrete at the external layer. 
         [0011]    Compared with the prior art, the present invention has the following effects: 
         [0012]    1. The shock resistance of the shock-resisting steel concrete structure is improved effectively. 
         [0013]    2. The external steel-plate frame is combined tightly with the steel body and the steel wires after the grouting of concrete, in order to provide a shock-resisting structure capable of strengthening the shock resistance of the shock-resisting steel concrete structure in advance instead of a post-reinforced structure. Therefore, the invention can aggressively reduce the damages of the shock-resisting steel concrete structure caused by a earthquake. 
         [0014]    3. The external steel-plate frame covered onto the exterior of the steel body is capable of preventing cracked concrete from falling down and effectively avoiding accidents caused by the spalling concrete. 
         [0015]    4. The invention can prevent corrosions or damages to the framework caused by the void layer or crevice produced by thermal expansions and contractions or light earthquakes. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0016]      FIG. 1  is a schematic view of a structure of a construction concrete body in accordance with a prior art; 
           [0017]      FIG. 2  is a perspective view of a structure in accordance with a first preferred embodiment of the present invention; 
           [0018]      FIG. 3  is a cross-sectional view of a structure in accordance with a first preferred embodiment of the present invention; 
           [0019]      FIG. 4  is a cross-sectional view of a structure in accordance with a second preferred embodiment of the present invention; 
           [0020]      FIG. 5  is a schematic view of a structure of a steel body in accordance with a first preferred embodiment of the present invention; 
           [0021]      FIG. 6  is a schematic view of a structure of a steel body combined with steel wires in accordance with a first preferred embodiment of the present invention; 
           [0022]      FIG. 7  is a schematic view of a connecting wire fixture structure in accordance with a first preferred embodiment of the present invention; 
           [0023]      FIG. 8  is a schematic view of a connecting wire fixture structure in accordance with a third preferred embodiment of the present invention; 
           [0024]      FIG. 9  is a schematic view of a structure of a steel body in accordance with a fourth preferred embodiment of the present invention; 
           [0025]      FIG. 10  is a schematic view of a structure of a steel body combined with steel wires in accordance with a fourth preferred embodiment of the present invention; 
           [0026]      FIG. 11  is a perspective view of a structure in accordance with a fourth preferred embodiment of the present invention; 
           [0027]      FIG. 12  is a schematic view of a structure of a steel body combined with steel wires in accordance with a fifth preferred embodiment of the present invention; 
           [0028]      FIG. 13  is an exploded view of a structure in accordance with a sixth preferred embodiment of the present invention; and 
           [0029]      FIG. 14  is a cross-sectional view of a structure in accordance with a sixth preferred embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0030]    The characteristics of the present invention will become apparent with the detailed description of preferred embodiments with related drawings as follows. 
         [0031]    The present invention provides a shock-resisting steel concrete structure with a better shock resistance to prevent corrosions or damages to a steel body due to damages to concrete and effectively prevent concrete at the external layer from spalling. The invention provides a shock-resisting steel concrete structure applicable for construction beams and columns. Referring to  FIGS. 2 and 3  for a perspective view and a cross-sectional view of a shock-resisting steel concrete structure applied in construction beams and columns in accordance with a first preferred embodiment of the present invention respectively, the whole shock-resisting steel concrete structure comprises a steel body  1 , an external steel-plate frame  2  and a concrete  3 . 
         [0032]    Also referring to  FIG. 5 , the steel body  1  is a steel brace A in this embodiment. The steel body  1  includes at least two plates  11 , a plurality of flanges  12  disposed on both sides of each plate  11 , and a plurality of through holes  13  disposed uniformly on the steel body  1 . Also referring to  FIG. 6 , each plate  11  is fixed into the through holes  13  and woven by a steel wire  4  (preferably in a flat iron form, but also can be in a circular iron form) into a mesh shape to strengthen the whole steel body  1  and provide a better engagement of the concrete  3 . Further, the steel body  1  also includes a plurality of through holes  13  for providing a better engagement of the concrete  3 . 
         [0033]    The external steel-plate frame  2  is covered onto an external layer of the corresponding steel body  1  and forms a gap with the steel body  1  for filling the concrete  3 , and the external steel-plate frame  2  is made by bending a steel plate, or formed by a plurality of corresponding steel plates  21  (and this embodiment adopts four steel plates  21 ) covered onto an external layer of the steel body  1 , and each steel plate  21  has a sunken/protruded portion  22  for providing a better engaging effect. In this embodiment, the sunken/protruded portion  22  is in a dovetail shape for strengthening the concrete  3  for the desired engaging effect. Of course, the steel plates  21  can be in a linear flat shape as shown in  FIG. 4  for achieving the same covering effect. 
         [0034]    In  FIGS. 2 ,  3  and  7 , the plate of the external steel-plate frame  2  includes a plurality of hook holes  23 , and the steel body  1  includes a plurality of through holes  13  for connecting the connecting wire  5  to each hook hole  23  of the external steel-plate frame and each through hole  13  of the steel body  1  to constitute a structure of tightly connecting the steel body, the external steel-plate frame and the concrete, so that the whole reinforced concrete structure can have a better shock resistance. 
         [0035]    With the foregoing structure for connecting and securing the steel body  1 , the steel wire  4 , the connecting wire  5  and the external steel-plate frame  2  with a tight engagement, the concrete  3  can be filled into external steel-plate frame  2  by grouting and engaged with the structure to provide a reinforced concrete structure with a better shock resistance and prevent the concrete  3  from being damaged and the steel body  1  from being corroded, and the characteristic of covering the external steel-plate frame  2  can effectively prevent accidents caused by the concrete  3  spalled from the external layer of the steel concrete structure during an earthquake. 
         [0036]    Of course, the hook hole  23  for fixing the connecting wire  5  can be disposed directly on a plate surface of the steel plate  21  as shown in FIG. 
         [0037]    8 or soldered at a specific position of the steel plate  21  having the connecting plate  24  with the hook hole  23  as shown in  FIG. 7 . 
         [0038]    The steel body  1  includes two plates  11  (generally known as “I-beam steel”) as shown in  FIG. 5  or four plates  11  (generally known as “Check-shaped steel”) as shown in  FIGS. 9 to 11 . 
         [0039]    In  FIG. 5 , a plurality of flanges  12  are disposed on both lateral sides of the plate  11  for providing a reinforced structure and installed in opposite directions for providing a good engaging effect. Of course, the plurality of flanges  12  as shown in  FIG. 9  can be partitioned and installed in the same direction or a whole piece is installed in the same direction to achieve the advantages of a good reinforced structure and a good engaging effect. 
         [0040]    From the description above, the steel wire  4  among the plates  11  is passed through the plurality of through holes  13  disposed on the flange  12  or a plurality of screw bolts  14  disposed on both sides of the plate  11 , and the steel wire  4  is passed through the plurality of screw bolts  14  as shown in  FIG. 12  to substitute the flanges  12  by a simpler method. 
         [0041]    In addition to the foregoing embodiments, the steel body  1  also can be made of a steel bar B as shown in  FIGS. 13 and 14  instead of a steel  10  brace A, ad the steel body  1  is woven by the steel wire  4  into a mesh shape. Similarly, an external steel-plate frame  2  is covered onto the exterior of the steel body  1  and a gap is formed between the external steel-plate frame  2  and the steel body  1 . Further, a connecting wire  5  is provided for connecting the external steel-plate frame  2  and the steel body  1 , and the concrete  3  is filled up into the external steel-plate frame  2  and engaged with the steel body  1 , the steel wire  4  and the external steel-plate frame  2  to form a structure of tightly connecting the steel body  1 , the external steel-plate frame  2  and the concrete  3 . 
         [0042]    After the concrete is grouted and consolidated, the shock resistance of the whole shock-resisting steel concrete structure can be enhanced. Since the external steel-plate frame comes with a shock-resisting structure having a shock resistance for reinforcing the shock-resisting steel concrete structure in advance instead of providing a remedial reinforced structure, therefore the present invention can reduce the damage to the shock-resisting steel concrete structure during an earthquake. The external steel-plate frame covered onto an external layer of the steel body can prevent the cracked concrete lumps from falling and effectively prevent accidents caused by the concrete spalled from the external layer of the steel concrete structure. The invention also can prevent a void layer or a crevice formed in the concrete and a corrosion of the steel framework due to thermal expansions and contractions or a light earthquake. The invention is particularly applicable for the beams and columns of a construction. 
         [0043]    In summation of the above description, the present invention herein enhances the performance than the conventional structure and further complies with the patent application requirements and is thus duly filed for patent application. 
         [0044]    While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.