An integrated bridge wet joint formwork device

Abstract

The present invention provides an integrated bridge wet joint template device, which relates to the technical field of bridge engineering equipment; it includes: a steel template, including a top template, and the left and right sides of the top template have web side templates; steel purlins, and multiple steel purlins are fixedly arranged on the inner side walls of the top template and the web side template; a steel pipe support frame, which is fixedly connected with multiple steel purlins; the lower end of the template tie rod is fixedly connected with the top template, and the upper end of the template tie rod has an external thread; a hollow steel pipe, which runs through the top template, and the bottom of the hollow steel pipe is fixedly connected with the top template; a reaction square pipe, which is fixedly arranged at the bottom of the steel pipe support frame; a jack demoulding device, including a supporting square pipe, a jack, a connecting rod and a supporting foot; two jack demoulding devices are located on the front and rear sides of the steel pipe support frame. The advantages of the present invention are: the steel template is quickly placed below the wet joint, and after the position of the wet joint is poured with concrete, the steel template is separated from the wet joint by the jack demoulding device, thereby improving the installation efficiency.

Description

Technical Field

[0001] The invention relates to bridge engineering equipment, in particular to an integrated bridge wet joint template device. Background Art

[0002] A wet joint refers to a prestressed concrete beam that is prefabricated in blocks and cantilevered to form a large-span continuous beam, with cast-in-place concrete used to connect the beam blocks into a whole joint.

[0003] At present, wet joints are mainly installed manually using wooden formwork. The wet joint formwork is a narrow and long formwork. In the absence of vertical support, it is difficult to install the formwork under the wet joint. The formwork installation takes a long time, and the installation workers work at high altitude, which is very dangerous. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an integrated bridge wet joint formwork device to improve the efficiency of formwork installation.

[0005] The present invention is implemented as follows: an integrated bridge wet joint template device, comprising:

[0006] The steel formwork comprises a top formwork, and the left and right sides of the top formwork have web side forms;

[0007] Steel purlins, a plurality of said steel purlins are fixedly arranged on the inner side walls of said top form and said web side form;

[0008] A steel pipe support frame fixedly connected to the plurality of steel purlins;

[0009] A template tie rod, the lower end of which is fixedly connected to the top mold, the upper end of which has an external thread, and there are multiple template tie rods;

[0010] A hollow steel pipe passes through the top mold, and the bottom of the hollow steel pipe is fixedly connected to the top mold;

[0011] A reaction square tube is fixedly arranged at the bottom of the steel tube support frame;

[0012] The jack demoulding device comprises a supporting square tube, a jack, a connecting rod and a supporting foot, wherein the bottom end of the supporting square tube is fixedly connected to the reaction square tube, the top of the supporting square tube is fixedly connected to one end of the jack, the other end of the jack is fixedly connected to one end of the connecting rod, and the connection is hinged to the supporting foot;

[0013] The two jack demoulding devices are located at the front and rear sides of the steel pipe support frame.

[0014] Furthermore, it also includes:

[0015] A circular ring head pull rod, the upper end of which is movably connected to the steel pipe support frame, and the lower end of which is provided with a first movable cross bar;

[0016] A first sleeve, fixedly connected to the upper side of the reaction force square tube;

[0017] The lower end of the circular ring head pull rod passes through the first sleeve.

[0018] Furthermore, there are a plurality of the circular ring head pull rods and the first sleeves, which are arranged at intervals along the length direction of the reaction force square tube.

[0019] Furthermore, it also includes:

[0020] A second sleeve, the lower end of the web side mold and the end of the reaction square tube are both fixedly connected with the second sleeve;

[0021] A straight tie rod with a second movable cross bar at both the upper and lower ends;

[0022] The upper end of the straight-end tie rod passes through the second sleeve located at the lower end of the web side mold, and the lower end of the straight-end tie rod passes through the second sleeve located at the end of the reaction force square tube.

[0023] Furthermore, it also includes:

[0024] A pull rope, one end of which is fixedly connected to the steel pipe support frame, and the other end of which is fixedly connected to the supporting square pipe.

[0025] Furthermore, it also includes:

[0026] A lower end of one of the web side molds has a bottom mold;

[0027] The bottom mold is fixedly connected to the lower end of one of the template tie rods.

[0028] Furthermore, the length of the steel purlin is the same as the width of the steel formwork, and the steel purlin is welded to the steel formwork.

[0029] Furthermore, the steel pipe support frame is welded to the middle portion of the steel purlin.

[0030] Furthermore, it also includes: a PVC pipe, which is sleeved on the template tie rod.

[0031] Furthermore, it also includes: a winch, wherein the steel wire rope of the winch is used to pass through the hollow steel pipe.

[0032] The advantages of the present invention are: 1. The steel formwork is quickly placed under the wet joint. After the concrete is poured at the position of the wet joint, the steel formwork is separated from the wet joint by the jack demolding device, thereby improving the installation efficiency. 2. The circular ring head pull rod and the flat head pull rod evenly transfer the reaction force generated by the jack demolding device to the steel formwork, so that the steel formwork is demolded. 3. The pull rope serves as a safety measure to prevent the jack demolding device from falling after the bottom of the jack demolding device is unsoldered from the reaction square tube. 4. The PVC pipe serves to isolate the concrete from the formwork pull rod. 5. The winch is connected to the hollow steel pipe through a steel wire rope to quickly raise or lower the steel formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0034] Figure 1 It is a schematic structural front view of the integrated bridge wet joint formwork device of the present invention.

[0035] Figure 2 yes Figure 1 AA cross-section diagram.

[0036] Figure 3 yes Figure 1 BB cross-section diagram.

[0037] Figure 4 yes Figure 1 CC cross-section diagram.

[0038] Figure 5 It is a schematic diagram of the positions of the pull rope, the jack demoulding device and the steel pipe support frame in the present invention.

[0039] Figure 6 It is a structural schematic diagram of the jack in the present invention.

[0040] Figure 7 It is a schematic front view of the structure of the connecting rod in the present invention.

[0041] Figure 8 yes Figure 7 Right view of .

[0042] Fig. 9 It is a schematic structural diagram of the supporting foot in the present invention.

[0043] Fig.10 It is a structural schematic diagram of the cylindrical pin in the present invention.

[0044] Fig.11 It is a schematic diagram of the structure of the latch in the present invention.

[0045] Fig.12 It is a schematic front view of the structure of the circular ring head pull rod in the present invention.

[0046] Fig.13 yes Fig.12 Right view of .

[0047] Fig.14 It is a schematic front view of the structure of the straight head pull rod in the present invention.

[0048] Fig.15 yes Fig.14 Right view of .

[0049] Fig.16 It is a structural schematic diagram of the steel template in the present invention.

[0050] Fig.17 It is a structural schematic diagram of the template connecting rod in the present invention.

[0051] Fig.18 It is a schematic front view of the structure of the steel pipe support frame in the present invention.

[0052] Fig.19 yes Fig.18 DD cross-section diagram.

[0053] Fig. 20 yes Figure 1 Right view of .

[0054] Fig.21 It is a schematic diagram of the installation of the integrated bridge wet joint template device and the wet joint of the present invention.

[0055] Fig. 22 It is a demoulding schematic diagram of the integrated bridge wet joint template device of the present invention.

[0056] Figure numerals: steel formwork 1; top formwork 11; web side formwork 12; bottom formwork 13; steel purlin 2; steel pipe support frame 3; formwork tie rod 4; pier head shape 41; external thread 42; hollow steel pipe 5; reaction square pipe 6; circular ring head tie rod 7; first movable cross bar 71; first sleeve 72; straight head tie rod 8; second movable cross bar 81; second sleeve 82; jack demoulding device 9; supporting square pipe 91; jack 92; connecting rod 93; first through hole 931; supporting foot 94; second through hole 941; cylindrical pin 95; reserved hole 951; latch 96; third movable cross bar 961; pull rope 97; PVC pipe 10; T-beam 20; wet joint 201; cross plate 202; nut 203; concrete 204. DETAILED DESCRIPTION

[0057] The embodiment of the present invention provides an integrated bridge wet joint formwork device, which solves the shortcomings of the prior art that it is difficult to install the formwork below the wet joint and the time required for formwork installation is long, thereby achieving the technical effect of improving the efficiency of formwork installation.

[0058] The technical solution in the embodiment of the present invention is to solve the above-mentioned shortcomings. The overall idea is as follows: an integrated steel formwork is manufactured, and a formwork tie rod and a hollow steel pipe are set on the top form of the steel formwork. The hollow steel pipe is used to fix with the steel wire rope of the lifting equipment such as the winch. After the steel formwork is lifted, the formwork tie rod passes through the wet joint of the bridge, and the steel formwork is close to the bottom of the wet joint. The upper end of the formwork tie rod is fixedly connected to the cross plate of the bridge, and then concrete is poured into the wet joint. After the concrete solidifies, the connection between the formwork tie rod and the cross plate of the bridge is disassembled, and the jack demolding device is extended to separate the steel formwork from the wet joint, and finally the steel formwork is lowered by the winch.

[0059] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] See also Figures 1 to 22 , a preferred embodiment of the present invention.

[0061] An integrated bridge wet joint formwork device comprises: a steel formwork 1, comprising a top formwork 11, wherein the top formwork 11 has web side forms 12 on its left and right sides; the steel formwork 1 is processed according to the shape of the bridge, such as a T-beam 20, and is manufactured and installed as a formwork unit between the two web side forms 12, and the two sides of the formwork are set to an asymmetric shape; that is, the lower end of one of the web side forms 12 has a bottom formwork 13, and the lower end of the other web side formwork 12 is not provided with a bottom formwork 13.

[0062] Steel purlins 2, a plurality of the steel purlins 2 are fixedly arranged on the inner side walls of the top form 11 and the web side form 12; the length of the steel purlins 2 is the same as the width of the steel form 1, and the steel purlins 2 are welded to the steel form 1. The arranged steel purlins 2 play a role in increasing the overall rigidity of the steel form 1.

[0063] The steel pipe support frame 3 is fixedly connected to the plurality of steel purlins 2; the steel pipe support frame 3 is welded to the middle of the steel purlins 2; so that the steel pipe support frame 3 is in an optimal stress-bearing state.

[0064] The template tie rod 4, the lower end of which is fixedly connected to the top template 11, specifically, the lower end of the template tie rod 4 is in a pier head shape 41, which is convenient for fixing on the steel template 1 and can provide greater pulling force; the upper end of the template tie rod 4 has an external thread 42, and there are multiple template tie rods 4; the template tie rod 4 is used to fix to the bridge. The bottom template 13 is fixedly connected to the lower end of one of the template tie rods 4, which increases the strength and rigidity of the bottom template 13.

[0065] The hollow steel pipe 5 passes through the top mold 11, and the bottom of the hollow steel pipe 5 is fixedly connected to the top mold 11; the hollow steel pipe 5 is welded to the steel template 1, and the oil pipeline used as the jack 92 and the steel wire rope used for the template lifting device such as the winch are inserted into the steel template 1 and fixed.

[0066] The reaction square tube 6 is fixedly arranged at the bottom of the steel tube support frame 3; it is used to transfer the reaction force generated by the jack demoulding device 9 to the steel tube support frame 3. It also includes a circular ring head pull rod 7, the upper end of which is movably connected to the steel tube support frame 3, and the upper end of the circular ring head pull rod 7 is a circular ring head, which is sleeved on the steel tube of the steel tube support frame, so that the circular ring head can be moved, which is convenient for the installation between the lower end of the circular ring head pull rod 7 and the first sleeve 72; the lower end of the circular ring head pull rod 7 has a first movable cross bar 71; the first sleeve 72 is fixedly connected to the upper side of the reaction square tube 6; the lower end of the circular ring head pull rod 7 passes through the first sleeve 72. There are multiple circular ring head pull rods 7 and the first sleeve 72, and they are arranged at intervals along the length direction of the reaction square tube 6. The function of the circular ring head pull rod 7 is to evenly transfer the reaction force generated by the jack demoulding device 9 to the steel tube support frame 3. The first movable cross bar 71 is connected to the lower end of the circular ring head tie rod 7 through bolts and nuts. The first movable cross bar 71 is in a vertical direction, and then the nuts and bolts are tightened to prevent the lower end of the circular ring head tie rod 7 from being separated from the first sleeve 72. When the circular ring head tie rod 7 needs to be disassembled, the nuts are loosened, the first movable cross bar 71 is in a horizontal direction, and the lower end of the circular ring head tie rod 7 is pulled out of the first sleeve 72. It also includes a second sleeve 82, and the lower end of the web side mold 12 and the end of the reaction square tube 6 are fixedly connected with the second sleeve 82; the straight head tie rod 8 has a second movable cross bar 81 at both the upper and lower ends; the upper end of the straight head tie rod 8 passes through the second sleeve 82 located at the lower end of the web side mold 12, and the lower end of the straight head tie rod 8 passes through the second sleeve 82 located at the end of the reaction square tube 6. The straight head pull rod 8 is used to evenly transfer the reaction force generated by the jack demoulding device 9 to the steel template 1, so that the steel template 1 is separated from the concrete 204 of the wet joint 201 to complete demoulding. The structural principle of the second movable cross bar 81 refers to the first movable cross bar 71.

[0067] The jack demoulding device 9 comprises a supporting square tube 91, a jack 92, a connecting rod 93 and a supporting foot 94. The bottom end of the supporting square tube 91 is fixedly connected to the reaction square tube 6, the top of the supporting square tube 91 is fixedly connected to the base end of the jack 92, the telescopic end of the jack 92 is fixedly connected to one end of the connecting rod 93, and the other end of the connecting rod 93 is hinged to the supporting foot 94. Specifically, the other end of the connecting rod 93 is provided with a first through hole 931, and the supporting foot 94 is provided with a second through hole 941. One end of the cylindrical pin 95 passes through the first through hole 931 and the second through hole 941, and a plug 96 is inserted into a reserved hole 951 at one end of the cylindrical pin 95 to prevent the cylindrical pin 95 from falling off. One end of the plug 96 has a third movable cross bar 961, and the structural principle of the third movable cross bar 961 refers to the first movable cross bar.

[0068] The two jack demoulding devices 9 are located at the front and rear sides of the steel pipe support frame 3. When the steel template 1 is closely attached to the bottom of the wet joint 201 of the bridge, the support legs 94 of the jack demoulding device 9 are closely attached to the lower side of the bridge. After the jack 92 is extended, the force is transmitted through the reaction square tube 6 and the steel pipe support frame 3 to move the steel template 1 downward.

[0069] A pull rope 97, one end of which is fixedly connected to the steel pipe support frame 3, and the other end of which is fixedly connected to the supporting square tube 91. The pull rope 97 serves as a safety measure to prevent the jack demoulding device 9 from falling after the bottom of the jack demoulding device 9 is de-welded from the reaction square tube 6.

[0070] The PVC pipe 10 is sleeved on the template tie rod 4. After the template tie rod 4 passes through the wet joint 201, it plays a role of isolating the concrete 204 from the template tie rod 4.

[0071] A winch (not shown) has a steel wire rope (not shown) for passing through the hollow steel pipe 5. The steel wire rope is inserted from the upper end of the hollow steel pipe 5, and is tied to a rod after passing through the lower end of the hollow steel pipe 5. The rod is stuck at the end of the hollow steel pipe, so that when the winch retracts the steel wire rope, the steel template 1 rises; when the winch releases the steel wire rope, the steel template 1 falls. The hollow steel pipe 5 is also covered with a PVC pipe 10 in the wet joint 201.

[0072] The specific connection relationship of the various parts of the integrated bridge wet joint formwork device of the present invention is as follows: the three components of the steel formwork 1, the steel pipe support frame 3 and the steel purlin 2 are connected by welding to form a formwork system. The lower end of the formwork tie rod 4 is welded to the steel formwork 1, and the threaded end passes through the through hole of the horizontal plate 202 of the upper bridge and is locked and fixed with a nut 203. The hollow steel pipe 5 is welded to the steel formwork 1. The jack demolding device 9 is welded to the reaction square tube 6. The two ends of the pull rope 97 are respectively welded to the jack demolding device 9 and the steel pipe support frame 3. The first sleeve 72 is welded to the reaction square tube 6, and the second sleeve 82 is welded to the reaction square tube 6 and the bottom mold 13.

[0073] The working method of the integrated bridge wet joint formwork device of the present invention is as follows: after the components of the present invention are assembled on the ground, the formwork tie rod 4 and the hollow steel pipe 5 are both covered with the PVC pipe 10, and the steel wire rope is lowered from the wet joint 201 of the T-beam 20 through the winch. After the worker passes the steel wire rope through the hollow steel pipe 5 and ties it to the rod and fixes it, the winch is started to lift it, and the steel formwork 1 is lifted into place. The worker only needs to stand on the upper board of the bridge surface to observe the sealing and tightness of the steel formwork 1 and the wet joint 201 of the T-beam 20, and adjust the position of the wet joint 201 appropriately. After the processing is completed, the through hole of the cross plate 202 is covered on the top of the formwork tie rod 4 above the T-beam 20, and then locked on the formwork tie rod 4 with the nut 203. Concrete 204 is poured into the wet joint 201, and after the concrete 204 is solidified, the formwork is removed. Before demoulding by the jack demoulding device 9, the nut 203 at the upper end of the template tie rod 4 should be unscrewed, the wire rope of the winch should be loosened a certain distance, and the jack 92 should be lifted through the hydraulic system. The force of the jack 92 acts on the T beam 20 through the support foot 94, and the generated reaction force is transmitted to the reaction square tube 6 through the jack demoulding device 9. The reaction square tube 6 is subjected to a downward force, and the circular ring head tie rod 7 and the straight head tie rod 8 act on the steel pipe support frame 3 and the steel template 1 respectively, generating a downward pulling force on the steel template 1, and completing the demoulding operation. In the PVC pipe 10 fixed concrete 204, the template tie rod 4 and the hollow steel pipe 5 are disengaged from the PVC pipe 10, the winch continues to release the wire rope, and the steel template 1 moves downward to the ground. The installation and demoulding process does not require workers to work at high altitudes, which greatly reduces the danger of the operation.

[0074] The present invention can improve construction efficiency and eliminate the insecurity of installation workers working at high altitudes when using traditional construction methods. The present invention uses the space between two web side molds as a template unit for production and installation. After one template unit is installed and fixed, another template unit can be installed to form a wet joint template for a span of the bridge. The device of the present invention can complete automatic installation and removal, which is convenient and efficient. The entire device can be used in a turnover manner without causing waste of materials.

[0075] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An integrated bridge wet joint formwork device, characterized in that: include: The steel formwork comprises a top formwork, and the left and right sides of the top formwork have web side forms; Steel purlins, a plurality of said steel purlins are fixedly arranged on the inner side walls of said top form and said web side form; A steel pipe support frame fixedly connected to the plurality of steel purlins; A template tie rod, the lower end of which is fixedly connected to the top mold, the upper end of which has an external thread, and there are multiple template tie rods; A hollow steel pipe passes through the top mold, and the bottom of the hollow steel pipe is fixedly connected to the top mold; A reaction square tube is fixedly arranged at the bottom of the steel tube support frame; The jack demoulding device comprises a supporting square tube, a jack, a connecting rod and a supporting foot, wherein the bottom end of the supporting square tube is fixedly connected to the reaction square tube, the top of the supporting square tube is fixedly connected to one end of the jack, the other end of the jack is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is hinged to the supporting foot; The two jack demoulding devices are located at the front and rear sides of the steel pipe support frame.

2. The one-piece bridge wet joint formwork device according to claim 1, characterized in that: Also includes: A circular ring head pull rod, the upper end of which is movably connected to the steel pipe support frame, and the lower end of which is provided with a first movable cross bar; A first sleeve, fixedly connected to the upper side of the reaction force square tube; The lower end of the circular ring head pull rod passes through the first sleeve.

3. The one-piece bridge wet joint formwork device according to claim 2, characterized in that: There are a plurality of the circular ring head pull rods and the first sleeves, which are arranged at intervals along the length direction of the reaction force square tube.

4. The one-piece bridge wet joint formwork device according to claim 1, characterized in that: Also includes: A second sleeve, the lower end of the web side mold and the end of the reaction square tube are both fixedly connected with the second sleeve; A straight tie rod with a second movable cross bar at both the upper and lower ends; The upper end of the straight-end tie rod passes through the second sleeve located at the lower end of the web side mold, and the lower end of the straight-end tie rod passes through the second sleeve located at the end of the reaction force square tube.

5. The integrated bridge wet joint formwork device according to claim 1, characterized in that: Also includes: A pull rope, one end of which is fixedly connected to the steel pipe support frame, and the other end of which is fixedly connected to the supporting square pipe.

6. The integrated bridge wet joint formwork device according to claim 1, characterized in that: Also includes: A lower end of one of the web side molds has a bottom mold; The bottom mold is fixedly connected to the lower end of one of the template tie rods.

7. The integrated bridge wet joint formwork device according to claim 1, characterized in that: The length of the steel purlin is the same as the width of the steel template, and the steel purlin is welded to the steel template.

8. The integrated bridge wet joint formwork device according to claim 1, characterized in that: The steel pipe support frame is welded to the middle part of the steel purlin.

9. The integrated bridge wet joint formwork device according to claim 1, characterized in that: Also includes: The PVC tube is sleeved on the template tie rod.

10. The integrated bridge wet joint formwork device according to claim 1, characterized in that: Also includes: A winch, wherein the steel wire rope of the winch is used to pass through the hollow steel pipe.

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