CN114541266B - Bridge anti-collision retaining wall construction method - Google Patents
Bridge anti-collision retaining wall construction method Download PDFInfo
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- CN114541266B CN114541266B CN202210214453.9A CN202210214453A CN114541266B CN 114541266 B CN114541266 B CN 114541266B CN 202210214453 A CN202210214453 A CN 202210214453A CN 114541266 B CN114541266 B CN 114541266B
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 230000004888 barrier function Effects 0.000 claims description 24
- 239000004570 mortar (masonry) Substances 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 238000009415 formwork Methods 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 230000000712 assembly Effects 0.000 claims description 17
- 238000000429 assembly Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 16
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 4
- 230000003014 reinforcing effect Effects 0.000 description 18
- 238000009434 installation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 230000005574 cross-species transmission Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The application relates to a bridge anti-collision retaining wall construction method, which relates to the field of bridge construction and comprises the steps of prefabricating a bridge structure and prefabricating an anti-collision wall; building the bridge structure prefabricated in advance; installing a plurality of sections of prefabricated anti-collision walls on the bridge structure, wherein the plurality of sections of prefabricated anti-collision walls are distributed at intervals; building a pouring template between two adjacent prefabricated anti-collision walls, wherein a space between the two adjacent prefabricated anti-collision walls is enclosed in the pouring template; pouring concrete into the pouring template; and after the poured concrete is solidified to a specified degree, the pouring template is removed. The template setting up and disassembling workload is reduced.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a bridge anti-collision retaining wall construction method.
Background
In order to make the running of the vehicle on the bridge safer, an anti-collision retaining wall is arranged on the bridge structure.
In the related art, the bridge anti-collision retaining wall is formed by constructing templates and then pouring concrete for solidification, and because the bridge anti-collision retaining wall is longer, construction staff need to construct a large number of templates, and after the concrete is solidified, all the templates are removed.
The work of installing and dismantling the template in a large number increases constructor's work load, has also prolonged the engineering time simultaneously.
Disclosure of Invention
In order to reduce the workload of template construction and disassembly, the application provides a bridge anti-collision retaining wall construction method.
The application provides a bridge anticollision retaining wall construction method, adopts following technical scheme:
a bridge anti-collision retaining wall construction method comprises the steps of prefabricating a bridge structure and prefabricating an anti-collision wall; building the bridge structure prefabricated in advance; installing a plurality of sections of prefabricated anti-collision walls on the bridge structure, wherein the plurality of sections of prefabricated anti-collision walls are distributed at intervals; building a pouring template between two adjacent prefabricated anti-collision walls, wherein a space between the two adjacent prefabricated anti-collision walls is enclosed in the pouring template; pouring concrete into the pouring template; and after the poured concrete is solidified to a specified degree, the pouring template is removed.
Through adopting above-mentioned technical scheme, when needing the installation bridge anticollision wall, will prefabricate in advance the prefabricated anticollision wall setting in bridge structure on, a plurality of prefabricated anticollision wall intervals set up, then build the template between two adjacent sections prefabricated anticollision walls, water the concrete in to the template again, water the interval space of two adjacent prefabricated anticollision walls, with this connect two adjacent sections prefabricated anticollision walls, adopt the construction method of this application, most anticollision wall adopts prefabricated form, do not need the scene to carry out a large amount of mode of taking, only need take the mode watering between two adjacent sections prefabricated anticollision walls, connect can, the work load of template construction and dismantlement has been alleviateed, the operating efficiency has also been improved simultaneously.
Optionally, the top wall of the bridge structure is provided with at least one row of reserved grooves, and the length direction of the reserved grooves is consistent with the length direction of the bridge structure; the prefabricated anti-collision wall comprises a wall body and a positioning block, wherein the positioning block is integrally connected with the wall body and is used for extending out of the reserved groove.
Through adopting above-mentioned technical scheme, when laying prefabricated crashproof wall, insert prefabricated crashproof wall's locating piece to the reservation inslot, the inner wall of reservation groove plays spacing effect to the locating piece this moment, has reduced the possibility that prefabricated crashproof wall produced the position offset on bridge construction.
Optionally, when the positioning block is inserted into the reserved groove, the side wall of the wall body provided with the positioning block is put on the top wall of the bridge structure, and a gap is reserved between the bottom of the positioning block and the bottom wall of the reserved groove; after the prefabricated anti-collision wall is installed, a reserved space is formed by the prefabricated anti-collision wall and the inner wall of the reserved groove, and the space formed by the casting template is communicated with the reserved space.
Through adopting above-mentioned technical scheme, after constructor pours concrete into in the pouring template, in the concrete flows into the headspace from pouring template in, after the concrete condenses, through concrete interconnect between prefabricated crashproof wall and the bridge structure, strengthened the stability degree of being connected between prefabricated crashproof wall and the bridge structure, reduced the possibility that prefabricated crashproof wall takes place the offset on the bridge structure.
Optionally, before the prefabricated anti-collision wall is installed, mortar is smeared on a part of the top wall of the bridge structure, which is used for placing the wall.
Through adopting above-mentioned technical scheme, paint the mortar in the position department that bridge structure was used for taking the wall body, after the wall body was taken and is put on bridge structure, the mortar played the bonding effect, with bridge structure and wall body bonding together, strengthened the connection stability degree between bridge structure and the prefabricated crashproof wall, made the clearance between wall body and the bridge structure by effectual shutoff simultaneously.
Optionally, positioning steel bars extend out of the positioning block, and the positioning steel bars are used for being abutted with inner walls at two sides of the reserved groove in the length direction.
Through adopting above-mentioned technical scheme, after painting the mortar between prefabricated crashproof wall and the bridge structure, the mortar can spill over to both sides under the pressure of prefabricated crashproof wall, consequently, need leave certain interval between locating piece and reservation inslot wall, this interval is the mortar that supplies to spill over flows into in the reservation space, but the interval must can lead to the locating piece to fix a position inaccurately, make the skew on the crashproof dado produce the position easily, consequently set up the spacer bar on the locating piece, the abutting effect between spacer bar and the reservation inslot wall can play the positioning effect to prefabricated crashproof wall, can play the effect of strengthening the connection tightness between prefabricated crashproof wall and the concrete again after pouring the concrete.
Optionally, reserved grooves are formed in two sides of the top wall of the bridge structure; the prefabricated anti-collision wall further comprises a barrier strip, the barrier strip is integrally connected with the wall body, the barrier strip is located on the outer side of the bridge structure after the prefabricated anti-collision wall is installed, and the bottom of the barrier strip extends to the lower portion of the top wall of the bridge structure.
Through adopting above-mentioned technical scheme, install in bridge structure's both sides when prefabricated crashproof wall, mortar is pressed out outside prefabricated crashproof wall and bridge structure, need constructor clear up the operation that spills over mortar in the outside of bridge protection wall, this just needs some auxiliary device to send constructor outside crashproof protection wall, but waste time and energy like this, consequently set up the blend stop, when the blend stop hugs closely bridge structure outer wall, mortar only can spill into in the reserved space, even if the blend stop fails to paste the outside of bridge structure, the mortar that spills over also can spill into between blend stop and the bridge structure, can also fill the gap between blend stop and the bridge structure outer wall.
Optionally, the reservation groove inner wall extends the reinforcing bar, locating piece department extends the reinforcing bar, adjacent the both ends that the wall body is close to each other all extend the reinforcing bar, the outside ligature of reinforcing bar that the wall body tip extended has the stirrup.
By adopting the technical scheme, the stretched steel bars can be bonded with poured concrete, so that the rigidity of the bridge anti-collision retaining wall is enhanced.
Optionally, an auxiliary opening is reserved on the wall body, and a plugging block is detachably connected in the auxiliary opening; after the prefabricated anti-collision wall is installed, the auxiliary opening faces the inner side of the bridge structure, and the auxiliary opening is communicated with the outside and the reserved space; when the concrete is poured, the plugging block is opened, and meanwhile, the concrete is poured into the reserved space through the space surrounded by the pouring template and the auxiliary opening, and after the pouring in the reserved space is finished, the plugging block is installed in the auxiliary opening before the concrete is solidified; and after the concrete in the reserved space is solidified, continuing to pour the concrete into the space surrounded by the pouring template until the pouring is finished.
Through adopting above-mentioned technical scheme, after pouring concrete in the pouring template, the concrete flows in the headspace, and rethread auxiliary port is towards the interior pouring concrete of headspace this moment, guarantees that the concrete in the headspace can even fill, and in the concrete pouring in the headspace was filled, with the shutoff piece inserted auxiliary port in, with auxiliary port shutoff, after the concrete in the headspace solidifies, the pouring in the pouring template is continued towards again, until the completion is pour to the connection of adjacent prefabrication crashproof wall.
Optionally, a limiting reinforcing bar extends from the inner wall of the auxiliary opening, a limiting hole is formed in the plugging block, the limiting reinforcing bar is used for being inserted into the limiting hole, and the limiting reinforcing bar is used for supporting the plugging block; and the reinforcing steel bars extend out of the plugging block, and when the plugging block is arranged in the auxiliary opening, the reinforcing steel bars extending out of the plugging block extend into the reserved space.
Through adopting above-mentioned technical scheme, after the concrete of pouring in the headspace solidifies to a certain extent, insert the shutoff piece in the auxiliary port, support the shutoff piece through spacing reinforcing bar, reduce the possibility that the shutoff piece dropped, simultaneously, the reinforcing bar that extends in the shutoff piece bonds with the concrete in the headspace, is convenient for bond fixedly to the shutoff piece after the installation.
Optionally, the pouring template comprises a template component, a plurality of fixing components and a plurality of clamping components; the template assembly comprises a first template and a second template, wherein the first template and the second template are used for clamping the prefabricated anti-collision wall; the fixing assemblies are distributed at the top of the template assembly and comprise fixing bolts and rotating nuts, the fixing bolts penetrate through the first template and the second template at the same time, the fixing bolts are in threaded connection with the rotating nuts, and the bolt heads of the fixing bolts and the rotating nuts are used for clamping the template assembly; the distribution direction of a plurality of clamping components is unanimous with the distribution direction of fixed subassembly, clamping components includes two-way screw rod and two movable rods, first template with the bottom of second template respectively fixedly connected with one the movable rod, two the movable rod all extends to the top of template subassembly, two the movable rod is articulated, the screw thread section that two-way screw rod is different respectively with one movable rod threaded connection.
Through adopting above-mentioned technical scheme, when the template is pour in the installation, will pour the template and install in the clearance department between two adjacent prefabricated crashproof walls, it is fixed with the upper portion of second template to pass through the mounting with first template, the rethread clamping component presss from both sides the lower part of first template and second template, the fixed of template subassembly has been realized, constructor only needs to adjust rotation nut and bi-directional screw, can realize the fixed and the clamp to the template, do not need constructor to carry out the template installation in the outside of bridge, it is convenient to provide for the construction.
In summary, the present application includes at least one of the following beneficial technical effects:
1. firstly, placing the multi-section prefabricated anti-collision wall on a bridge structure, and building templates on two sides of a space between adjacent prefabricated anti-collision walls, so that the multi-section prefabricated anti-collision walls can be connected, and the workload of building and disassembling the templates is reduced;
2. the precast anti-collision wall and the bridge structure are connected by pouring concrete in the reserved space;
3. the auxiliary opening can assist in concrete pouring, so that the concrete pouring in the reserved space is more uniform and more abundant;
4. the fixing assembly and the clamping assembly facilitate the installation of the template assembly.
Drawings
FIG. 1 is a schematic structural view of a bridge structure according to an embodiment of the present application;
FIG. 2 is a schematic view of the structure of a prefabricated anti-collision wall according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a block according to an embodiment of the present application;
fig. 4 is a schematic structural view of a spacing reinforcement according to an embodiment of the present application;
FIG. 5 is a schematic view of the structure of the prefabricated anti-collision wall according to the embodiment of the present application after installation;
FIG. 6 is an enlarged view at A in FIG. 5;
fig. 7 is a schematic structural view of a third reinforcing bar according to an embodiment of the present application;
FIG. 8 is an enlarged view at B in FIG. 7;
FIG. 9 is an enlarged view at C in FIG. 7;
FIG. 10 is a schematic view of a casting form in accordance with an embodiment of the present application;
FIG. 11 is a schematic view of a casting form according to an embodiment of the present application;
fig. 12 is an enlarged view of D in fig. 10.
Reference numerals illustrate: 1. bridge structure; 11. a reserved groove; 111. extending the reinforcing steel bars; 12. mortar; 2. prefabricating an anti-collision wall; 21. a wall body; 211. a first reinforcing bar; 2111. stirrups; 212. an auxiliary port; 2121. a vertical wall; 2122. a bottom wall; 2123. an inclined wall; 2124. limiting steel bars; 213. a block; 2131. a limiting hole; 2132. a third reinforcing bar; 22. a positioning block; 221. positioning reinforcing steel bars; 222. a second reinforcing bar; 223. reserving a space; 23. a barrier strip; 3. pouring a template; 31. a template assembly; 311. a first template; 312. a second template; 32. a fixing assembly; 321, a base; a fixing piece; 322. a fixing bolt; 323. rotating the nut; 33. a clamping assembly; 331. a bidirectional screw; 332. a movable rod.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-12.
The embodiment of the application discloses a bridge anti-collision retaining wall construction method.
The bridge anti-collision retaining wall construction method comprises the following steps:
prefabricating:
the bridge structure 1 and the prefabricated anti-collision wall 2 are manufactured in advance.
Referring to fig. 1, a bridge structure 1 is a box girder, rectangular long-strip-shaped reserved grooves 11 are reserved on two sides of the bridge structure 1 in the length direction, the reserved grooves 11 are formed in the top wall of the bridge structure 1, the length direction of the reserved grooves 11 is consistent with the length direction of the bridge structure 1, and the inner walls of two sides of the length direction of the reserved grooves 11 extend out of extension steel bars 111.
Referring to fig. 2, the prefabricated anti-collision wall 2 includes a wall 21, a positioning block 22 and a barrier strip 23, the wall 21 is a protective wall structure with a small upper end and a large lower end, the wall 21 has a certain length, and both ends of the wall 21 in the length direction extend out of first reinforcing steel bars 211.
Referring to fig. 2, the positioning block 22 is rectangular and strip-shaped, the positioning block 22 and the wall 21 are integrally cast, the positioning block 22 is integrally connected to the bottom wall of the wall 21, the length direction of the positioning block 22 is identical to the length direction of the wall 21, the lengths of the wall 21 and the positioning block 22 are identical, positioning steel bars 221 extend from both sides of the length direction of the positioning block 22, a second steel bar 222 extends from the bottom of the prefabricated anti-collision wall 2, the second steel bar 222 extends towards one side, away from the wall 21, of the positioning block 22, and the end part of the extending section of the second steel bar 222 is bent to form an anchoring structure.
Referring to fig. 2, the length direction of the barrier rib 23 is identical to the length direction of the wall 21, the length of the barrier rib 23 is identical to the length of the wall 21, the barrier rib 23 is integrally connected with the wall 21, the barrier rib 23 is located at one side of the length direction of the wall 21, the barrier rib 23 is located on the bottom wall of the wall 21, and the protruding direction of the barrier rib 23 is identical to the protruding direction of the positioning block 22.
Referring to fig. 3 and 4, an auxiliary opening 212 is formed in the wall 21, the auxiliary opening 212 is positioned on a side wall of one side of the wall 21 in the length direction, and the auxiliary opening 212 and the barrier rib 23 are positioned on different sides of the wall 21 in the length direction; the auxiliary opening 212 comprises four inner walls, wherein two inner walls are vertical walls 2121, the vertical walls 2121 are two inner walls which are distributed in the same direction along the length direction of the auxiliary opening 212 and the wall 21, and when the large end of the wall 21 faces downwards and the small end faces upwards, the wall surfaces of the vertical walls 2121 are arranged along the vertical direction; the auxiliary port 212 has two inner walls in the inward concave direction, one is a bottom wall 2122 and the other is an inclined wall 2123, the bottom wall 2122 is also arranged in the vertical direction, the bottom wall 2122 is the bottommost inner wall of the inward concave of the auxiliary port 212, the inclined wall 2123 is positioned above the bottom wall 2122 far from the positioning block 22, and the inclined wall 2123 is inclined towards the inner side of the auxiliary port 212 along the direction from the wall 21 to the positioning block 22.
Referring to fig. 3 and 4, a blocking block 213 is detachably connected in the auxiliary opening 212, the shape of the blocking block 213 is matched with that of the auxiliary opening 212, and when the blocking block 213 is installed, the side wall of the wall 21 with the auxiliary opening 212 is a plane; a limiting bar 2124 extends from the bottom wall 2122, a limiting hole 2131 is formed in the plugging block 213, the limiting bar 2124 is used for being inserted into the limiting hole 2131, and after the limiting bar 2124 is inserted into the limiting hole 2131, the limiting bar 2124 can support the plugging block 213; the third reinforcing bar 2132 extends in the blocking block 213, and when the blocking block 213 is installed in the auxiliary port 212, the extending direction of the third reinforcing bar 2132 is identical to the extending direction of the second reinforcing bar 222.
Building a bridge structure:
and building the prefabricated bridge structure 1 on the bridge pier through a bridge girder erection machine.
Installing a prefabricated anti-collision wall:
referring to fig. 5, 6 and 7, mortar 12 is smeared on both sides of the length direction of the reserved groove 11, the prefabricated anti-collision wall 2 is placed on the bridge structure 1, the prefabricated anti-collision walls 2 are arranged at intervals, the prefabricated anti-collision wall 2 has a certain length, and after the prefabricated anti-collision wall 2 is installed, the length direction of the prefabricated anti-collision wall 2 is consistent with the length direction of the bridge structure 1; after the installation is completed, the mortar 12 overflowing the gap is cleaned; after the prefabricated anti-collision walls 2 are installed, stirrups 2111 are bound outside the first reinforcing steel bars 211 adjacent to the prefabricated anti-collision walls 2.
Referring to fig. 6 and 7, the width of the bottom wall of the wall 21 is greater than the width of the reserved groove 11, the width of the positioning block 22 is smaller than the width of the reserved groove 11, the positioning block 22 is used for extending into the reserved groove 11, the prefabricated anti-collision wall 2 is installed, when the positioning block 22 is inserted into the reserved groove 11, positioning steel bars 221 on two sides of the positioning block 22 in the length direction are used for abutting against the inner walls on two sides of the reserved groove 11 in the length direction, and the movement of the prefabricated anti-collision wall 2 is limited.
Referring to fig. 6 and 7, the bottom wall of the wall body 21 provided with the positioning block 22 is put on the top wall of the bridge structure 1, mortar 12 is smeared on the top wall of the bridge structure 1 for bearing the bottom wall of the wall body 21, the mortar 12 is positioned between the bottom wall of the wall body 21 and the top wall of the bridge structure 1, at this time, a gap is reserved between the bottom of the positioning block 22 and the bottom wall of the reserved groove 11, a reserved space 223 is defined between the prefabricated anti-collision wall 2 and the inner wall of the reserved groove 11, and the positioning steel bar 221 and the second steel bar 222 are both positioned in the reserved space 223; when the plugging block 213 is installed in the auxiliary port 212, the third reinforcing steel bars 2132 extend into the reserved space 223, and a portion of the plugging block 213 away from the bottom wall 2122 is placed on the bridge structure 1; after the prefabricated anti-collision wall 2 is installed, the barrier strip 23 is positioned on the outer side of the bridge structure 1, the bottom of the barrier strip 23 extends to the lower portion of the top wall of the bridge structure 1, and the side wall of the barrier strip 23, which is close to the auxiliary opening 212, is attached to the outer side wall of the bridge structure 1.
Referring to fig. 6, 8 and 9, when the prefabricated anti-collision wall 2 is placed on the bridge structure 1, due to the existence of the barrier strips 23, in the mortar 12 on two sides of each reserved groove 11 in the length direction, the mortar 12 on one side close to the barrier strips 23 only overflows into the reserved space 223, the mortar 12 far away from the barrier strips 23 overflows into the reserved space 223 and also overflows onto the top wall of the bridge structure 1 towards one side far away from the reserved grooves 11, and the cleaning of the mortar 12 in the construction method refers to cleaning of the mortar 12 overflowed onto the top wall of the bridge structure 1; the distance between the adjacent walls 21 is controlled so that the first reinforcing bars 211 adjacent to each other of the adjacent walls 21 have overlapping portions, and the stirrups 2111 are bound outside the first reinforcing bars 211.
And (3) installing a template:
referring to fig. 10, a casting formwork 3 is built between two adjacent prefabricated anti-collision walls 2, and a space between the two adjacent prefabricated anti-collision walls 2 is enclosed in the casting formwork 3.
Referring to fig. 11, the casting mold 3 includes a mold assembly 31, a plurality of fixing assemblies 32, and a plurality of clamping assemblies 33; the form assembly 31 includes a first form 311 and a second form 312, the first form 311 and the second form 312 are used for clamping adjacent prefabricated anti-collision walls 2, the middle parts of the first form 311 and the second form 312 enclose the space between the adjacent prefabricated anti-collision walls 2, the two ends of the first form 311 and the second form 312 are used for abutting against the two adjacent walls 21, when the prefabricated anti-collision wall is installed, the first form 311 is positioned at the inner side of the prefabricated anti-collision walls 2, the second form 312 is positioned at the outer side of the prefabricated anti-collision walls 2, the inner mold shapes of the first form 311 and the second form 312 are matched with the structures of the prefabricated anti-collision walls 2, and after the first form 311 and the second form 312 are combined and poured, the prefabricated anti-collision walls can be processed into structures consistent with the prefabricated anti-collision walls 2 so as to connect the two adjacent prefabricated anti-collision walls 2 together, and the structures after being poured are identical.
Referring to fig. 11 and 12, in this embodiment, two fixing assemblies 32 are provided, the two fixing assemblies 32 are distributed on the top of the formwork assembly 31, the distribution direction of the fixing assemblies 32 is consistent with the length direction of the bridge structure 1, the fixing assemblies 32 include fixing pieces 321, fixing bolts 322 and rotating nuts 323, when the casting formwork 3 is installed on the prefabricated anti-collision wall 2, the fixing pieces 321 are located on the top of the first formwork 311 and the top of the second formwork 312, the fixing pieces 321 are welded on the top of the first formwork 311 and the top of the second formwork 312, one fixing bolt 322 passes through one fixing piece 321 on the first formwork 311 and one fixing piece 321 on the second formwork 312 at the same time, the fixing bolts 322 are welded on the fixing pieces 321 on the second formwork 312, the rotating nuts 323 are connected to the fixing bolts 322 in a threaded manner, and the bolt heads of the fixing bolts 322 and the rotating nuts 323 are used for clamping the first formwork 311 and the second formwork 312.
Referring to fig. 11 and 12, in this embodiment, three clamping assemblies 33 are provided, the distribution directions of the three clamping assemblies 33 are consistent with the distribution directions of the fixed assemblies 32, the clamping assemblies 33 are staggered with the fixed assemblies 32, the clamping assemblies 33 include two movable rods 332 and two bidirectional screws 331, the bottoms of the first mold plate 311 and the second mold plate 312 are respectively welded with one movable rod 332, the two movable rods 332 extend to the upper portion of the mold plate assembly 31, for convenience in operation and placement, the two movable rods 332 are bent, the two movable rods 332 are hinged, the hinge point of the two movable rods 332 is located above the mold plate assembly 31, the two threaded sections of the two bidirectional screws 331 are respectively connected with one movable rod 332 in a threaded manner, and the two bidirectional screws 331 are located above the hinge point of the movable rods 332.
Pouring concrete:
opening the blocking block 213, simultaneously pouring concrete into the pouring template 3 and the auxiliary opening 212 to fill the whole reserved space 223 with the concrete, installing the blocking block 213 before the concrete is solidified, waiting for the concrete in the reserved space 223 to be solidified after the blocking block 213 is installed, and then continuing pouring the concrete into the space enclosed by the pouring template 3 until the pouring connection of the two adjacent prefabricated anti-collision walls 2 is completed.
Referring to fig. 7, the shape of the auxiliary port 212 and the blocking block 213 is provided for the convenience of removing and installing the blocking block 213.
Removing the template:
and after the poured concrete is solidified to a specified degree, the pouring template 3 is removed.
The implementation principle of the bridge anti-collision retaining wall construction method provided by the embodiment of the application is as follows: when the bridge anti-collision protection wall is required to be constructed, the prefabricated anti-collision walls 2 are installed on the bridge structure 1 at intervals, then the pouring templates 3 are installed between the adjacent prefabricated anti-collision walls 2, concrete is poured into the pouring templates 3, and meanwhile auxiliary pouring is carried out through the auxiliary ports 212, the reserved space 223 is poured first, then the middle connecting sections of the adjacent prefabricated anti-collision walls 2 are poured, and after the pouring is completed and condensed, the pouring templates 3 are removed; the use quantity of templates is saved to the greatest extent, the structure of the pouring template 3 is convenient to install, and the workload of constructors is reduced.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (5)
1. The bridge anti-collision retaining wall construction method comprises the following steps:
prefabricated bridge structures (1) and prefabricated anti-collision walls (2);
building the bridge structure (1) prefabricated in advance;
installing a plurality of sections of prefabricated anti-collision walls (2) on the bridge structure (1), wherein the plurality of sections of prefabricated anti-collision walls (2) are distributed at intervals;
building a pouring template (3) between two adjacent sections of prefabricated anti-collision walls (2), wherein a space between the two adjacent sections of prefabricated anti-collision walls (2) is enclosed in the pouring template (3);
pouring concrete into the pouring template (3);
after the poured concrete is solidified to a specified degree, the pouring template (3) is removed;
the top wall of the bridge structure (1) is provided with at least one row of reserved grooves (11), and the length direction of the reserved grooves (11) is consistent with the length direction of the bridge structure (1);
the prefabricated anti-collision wall (2) comprises a wall body (21) and a positioning block (22), wherein the positioning block (22) is integrally connected with the wall body (21), and the positioning block (22) is used for extending out of the reserved groove (11); the width of the bottom wall of the wall body (21) is larger than that of the reserved groove (11), and the width of the positioning block (22) is smaller than that of the reserved groove (11);
when the positioning block (22) is inserted into the reserved groove (11), the side wall of the wall body (21) provided with the positioning block (22) is put on the top wall of the bridge structure (1), and a gap is reserved between the bottom of the positioning block (22) and the bottom wall of the reserved groove (11); after the prefabricated anti-collision wall (2) is installed, a reserved space (223) is formed by the prefabricated anti-collision wall (2) and the inner wall of the reserved groove (11), and the space formed by the casting template (3) is communicated with the reserved space (223);
positioning steel bars (221) extend out of the positioning blocks (22), and the positioning steel bars (221) are used for abutting against the inner walls of the two sides of the reserved groove (11) in the length direction; the inner walls of the two sides of the length direction of the reserved groove (11) extend out of the extension steel bars (111); a second reinforcing steel bar (222) extends from the bottom of the prefabricated anti-collision wall (2), the second reinforcing steel bar (222) extends towards one side, far away from the wall body (21), of the positioning block (22), and the end part of the extending section of the second reinforcing steel bar (222) is bent into an anchoring structure; the prefabricated anti-collision wall (2) further comprises a barrier strip (23), the barrier strip (23) is integrally connected with the wall body (21), when the prefabricated anti-collision wall (2) is installed, the barrier strip (23) is positioned on the outer side of the bridge structure (1), and the bottom of the barrier strip (23) extends to the lower portion of the top wall of the bridge structure (1);
an auxiliary opening (212) is reserved on the wall body (21), the auxiliary opening (212) is positioned on the side wall of one side of the wall body (21) in the length direction, and the auxiliary opening (212) and the barrier strip (23) are positioned on different sides of the wall body (21) in the length direction; the auxiliary opening (212) comprises four inner walls, wherein the two inner walls are vertical walls (2121), and the vertical walls (2121) are two inner walls which are distributed in the same direction with the length direction of the wall body (21) in the auxiliary opening (212); the auxiliary opening (212) is provided with two inner walls in the inward concave direction, one is a bottom wall (2122) and the other is an inclined wall (2123), the bottom wall (2122) is also arranged in the vertical direction, the bottom wall (2122) is the bottommost inner wall of the auxiliary opening (212) in the inward concave direction, the inclined wall (2123) is positioned above the bottom wall (2122) far away from the positioning block (22), and the inclined wall (2123) is inclined towards the inner side of the auxiliary opening (212) along the direction from the wall (21) to the positioning block (22); a blocking block (213) is detachably connected in the auxiliary port (212);
limiting steel bars (2124) extend out of the inner wall of the auxiliary opening (212), limiting holes (2131) are formed in the plugging blocks (213), the limiting steel bars (2124) are used for being inserted into the limiting holes (2131), and the limiting steel bars (2124) are used for supporting the plugging blocks (213);
reinforcing steel bars extend out of the blocking blocks (213), and when the blocking blocks (213) are installed in the auxiliary ports (212), the reinforcing steel bars extending out of the blocking blocks (213) extend into the reserved space (223);
after the prefabricated anti-collision wall (2) is installed, the auxiliary opening (212) faces to the inner side of the bridge structure (1), and the auxiliary opening (212) is communicated with the outside and the reserved space (223);
opening the blocking block (213) when concrete is poured, and pouring the concrete into the reserved space (223) through the space surrounded by the pouring template (3) and the auxiliary opening (212), wherein after the reserved space (223) is poured, the blocking block (213) is arranged in the auxiliary opening (212) before the concrete is solidified; and after the concrete in the reserved space (223) is solidified, continuing to pour the concrete into the space surrounded by the pouring template (3) until the pouring is finished.
2. The method for constructing the anti-collision retaining wall of the bridge according to claim 1, wherein,
before the prefabricated anti-collision wall (2) is installed, mortar (12) is smeared on the part of the top wall of the bridge structure (1) for placing the wall body (21).
3. The method for constructing the anti-collision retaining wall of the bridge according to claim 2, wherein,
both sides of the top wall of the bridge structure (1) are provided with reserved grooves (11).
4. The method for constructing the anti-collision retaining wall of the bridge according to claim 1, wherein,
reinforcing steel bars extend from two ends, close to each other, of the adjacent wall bodies (21), and hoops (2111) are bound outside the reinforcing steel bars extending from the end parts of the wall bodies (21).
5. A method for constructing a bridge anti-collision retaining wall according to any one of claim 1 to 4,
the pouring template (3) comprises a template assembly (31), a plurality of fixing assemblies (32) and a plurality of clamping assemblies (33); the formwork assembly (31) comprises a first formwork (311) and a second formwork (312), wherein the first formwork (311) and the second formwork (312) are used for clamping the prefabricated anti-collision wall (2); the fixing assemblies (32) are distributed at the top of the template assembly (31), the fixing assemblies (32) comprise fixing bolts (322) and rotating nuts (323), the fixing bolts (322) penetrate through the first template (311) and the second template (312) at the same time, the fixing bolts (322) are in threaded connection with the rotating nuts (323), and the bolt heads of the fixing bolts (322) and the rotating nuts (323) are used for clamping the template assembly (31); the distribution direction of a plurality of clamping components (33) is unanimous with the distribution direction of fixed subassembly (32), clamping components (33) are including two-way screw rod (331) and two movable rod (332), first template (311) with the bottom of second template (312) respectively fixedly connected with one movable rod (332), two movable rod (332) all extend to template subassembly (31) top, two movable rod (332) are articulated, the screw thread section of two-way screw rod (331) difference respectively with one movable rod (332) threaded connection.
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