CN114541266A - Construction method of anti-collision retaining wall of bridge - Google Patents
Construction method of anti-collision retaining wall of bridge Download PDFInfo
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- CN114541266A CN114541266A CN202210214453.9A CN202210214453A CN114541266A CN 114541266 A CN114541266 A CN 114541266A CN 202210214453 A CN202210214453 A CN 202210214453A CN 114541266 A CN114541266 A CN 114541266A
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000009415 formwork Methods 0.000 claims description 30
- 230000000903 blocking effect Effects 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 239000004570 mortar (masonry) Substances 0.000 claims description 21
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 description 14
- 230000003014 reinforcing effect Effects 0.000 description 10
- 230000002457 bidirectional effect Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000005574 cross-species transmission Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- 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 construction method of a bridge anti-collision retaining wall, which relates to the field of bridge construction and comprises the steps of prefabricating a bridge structure and a prefabricated anti-collision wall; building the bridge structure prefabricated in advance; installing a plurality of sections of the prefabricated anti-collision walls on the bridge structure, wherein the plurality of sections of the prefabricated anti-collision walls are arranged at intervals; building a pouring template between two adjacent sections of the prefabricated anti-collision walls, wherein the space between the two adjacent sections of the prefabricated anti-collision walls is surrounded in the pouring template; pouring concrete into the pouring template; and after the poured concrete is solidified to a specified degree, removing the pouring template. This application has the effect that alleviates the template and builds and dismantle work load.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a construction method of a bridge anti-collision retaining wall.
Background
In order to ensure that the vehicles run on the bridge more safely, the bridge structure is provided with an anti-collision protective wall.
In the related art, the bridge anti-collision retaining wall is formed by building templates and then pouring concrete for solidification, and because the bridge anti-collision retaining wall is long, a large number of templates need to be built by constructors, and after the concrete is solidified, all the templates need to be dismantled.
The work of a large amount of installation and dismantlement templates has increased constructor's work load, has also prolonged the engineering time simultaneously.
Disclosure of Invention
In order to reduce the workload of building and disassembling the template, the application provides a construction method of a bridge anti-collision retaining wall.
The application provides a bridge anticollision revetment construction method, adopts following technical scheme:
a construction method of a bridge anti-collision retaining wall comprises the steps of prefabricating a bridge structure and a prefabricated anti-collision wall; building the bridge structure prefabricated in advance; installing a plurality of sections of the prefabricated anti-collision walls on the bridge structure, wherein the plurality of sections of the prefabricated anti-collision walls are arranged at intervals; building a pouring template between two adjacent sections of the prefabricated anti-collision walls, wherein the space between the two adjacent sections of the prefabricated anti-collision walls is surrounded in the pouring template; pouring concrete into the pouring template; and after the poured concrete is solidified to a specified degree, removing the pouring template.
Through adopting above-mentioned technical scheme, when the bridge anticollision wall is installed to needs, the prefabricated anticollision wall that will prefabricate in advance is settled on the bridge construction, a plurality of prefabricated anticollision wall intervals set up, then build the template between two sections adjacent prefabricated anticollision walls, pour the concrete in to the template again, water the interval space of two adjacent prefabricated anticollision walls, connect two sections adjacent prefabricated anticollision walls with this, adopt the construction method of this application, most anticollision walls adopt prefabricated form, do not need to carry out a large amount of building moulds on the scene, only need to build the mould watering between two sections adjacent prefabricated anticollision walls, connect can, the work load of template building 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 preformed grooves, and the length direction of the preformed grooves is consistent with the length direction of the bridge structure; the prefabricated anti-collision wall comprises a wall body and a positioning block, the positioning block is integrally connected with the wall body, and the positioning block is used for extending out of the reserved groove.
Through adopting above-mentioned technical scheme, when laying prefabricated crashproof wall, insert the locating piece of prefabricated crashproof wall to the reservation inslot, the inner wall of reservation groove plays limiting displacement to the locating piece this moment, has reduced the prefabricated crashproof wall and has produced offset's possibility on bridge structures.
Optionally, when the positioning block is inserted into the preformed groove, the side wall of the wall body provided with the positioning block is placed 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 preformed groove; after the prefabricated anti-collision wall is installed, a reserved space is enclosed by the prefabricated anti-collision wall and the inner wall of the reserved groove, and the space enclosed by the pouring template is communicated with the reserved space.
Through adopting above-mentioned technical scheme, after constructor pours the concrete into in the template towards pouring, the concrete flows into to the headspace in from pouring the template, after the concrete condenses, through concrete interconnect between prefabricated crashproof wall and the bridge structures, has strengthened the stability of being connected between prefabricated crashproof wall and the bridge structures, has reduced the possibility that prefabricated crashproof wall takes place the offset on the bridge structures.
Optionally, before the prefabricated anti-collision wall is installed, mortar is applied to a part, used for placing the wall, of the top wall of the bridge structure.
Through adopting above-mentioned technical scheme, be used for taking the position department of putting the wall body at bridge structures and paint the mortar, after the wall body was taken and is put on bridge structures, the mortar played the adhesive effect, with bridge structures and wall body bonding together, has strengthened the stability of being connected between bridge structures and the prefabricated crashproof wall, makes the clearance between wall body and the bridge structures by effectual shutoff simultaneously.
Optionally, a positioning steel bar extends out of the positioning block, and the positioning steel bar is used for abutting against the inner walls of the two sides of the length direction of the preformed groove.
Through adopting above-mentioned technical scheme, after scribbling the mortar between prefabricated crashproof wall and the bridge structures, the mortar can spill over to both sides under prefabricated crashproof wall's pressure, consequently need leave certain interval between locating piece and preformed groove inner wall, this interval is just that the mortar that supplies to spill over flows in the headspace, nevertheless the interval must lead to the locating piece location inaccurate, make the easy skew that produces on the position of crashproof revetment, consequently set up the spacer bar on the locating piece, the butt effect between spacer bar and preformed groove inner wall, can play the positioning action to prefabricated crashproof wall, again can be after concreting, play and strengthen the effect of being connected the fastening between prefabricated crashproof wall and the concrete.
Optionally, two sides of the top wall of the bridge structure are provided with reserved grooves; prefabricated crashproof wall still includes the blend stop, the blend stop with wall body coupling works as prefabricated crashproof wall installation back that finishes, the blend stop is located bridge structures's the outside, the blend stop bottom extends to bridge structures roof below.
Through adopting above-mentioned technical scheme, install in bridge construction's both sides when prefabricated crashproof wall, the mortar is extruded outside prefabricated crashproof wall and bridge construction, need constructor to clear up the operation that spills over the mortar in bridge retaining wall's the outside, this just needs some auxiliary device to deliver to outside the crashproof retaining wall constructor, nevertheless waste time and energy like this, consequently, set up the blend stop, when bridge construction outer wall is hugged closely to the blend stop, the mortar only can be excessive to the interior income of headspace, even if the blend stop fails to paste tight bridge construction's the outside, the mortar that spills over also can overflow between blend stop and the bridge construction, can also fill the gap between blend stop and the bridge construction outer wall.
Optionally, reinforcing steel bars extend from the inner wall of the preformed groove, the positioning blocks extend out of the reinforcing steel bars, the reinforcing steel bars extend from two adjacent ends of the wall body, and stirrups are bound outside the reinforcing steel bars extending from the end part of the wall body.
Through adopting above-mentioned technical scheme, the reinforcing bar that stretches out can bond together with the concrete of watering, strengthens the rigidity of bridge anticollision revetment.
Optionally, an auxiliary port is reserved on the wall body, and a plugging block is detachably connected in the auxiliary port; after the prefabricated anti-collision wall is installed, the auxiliary opening faces towards the inner side of the bridge structure, and the auxiliary opening is communicated with the outside and the reserved space; when concrete is poured, the blocking blocks are opened, meanwhile, the concrete is poured into the reserved space through the space enclosed by the pouring template and the auxiliary port, and after the pouring in the reserved space is finished, the blocking blocks are installed in the auxiliary port 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 pouring is finished.
By adopting the technical scheme, after concrete is poured into the pouring template, the concrete flows in the reserved space, at the moment, the concrete is poured into the reserved space through the auxiliary opening, the concrete in the reserved space can be uniformly filled, after the concrete in the reserved space is filled, the plugging block is inserted into the auxiliary opening, the auxiliary opening is plugged, after the concrete in the reserved space is solidified, pouring is continued into the pouring template until the connection pouring of the adjacent prefabricated anti-collision walls is completed.
Optionally, a limiting steel bar extends out of the inner wall of the auxiliary port, a limiting hole is formed in the blocking block, the limiting steel bar is used for being inserted into the limiting hole, and the limiting steel bar is used for supporting the blocking block; and reinforcing steel bars extend from the blocking block, and when the blocking block is installed in the auxiliary port, the reinforcing steel bars extending from the blocking block extend into the reserved space.
Through adopting above-mentioned technical scheme, after the concrete that pours in the headspace solidifies to a certain degree, 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 assembly, a plurality of fixing assemblies and a plurality of clamping assemblies; the formwork assembly comprises a first formwork and a second formwork, and the first formwork and the second formwork are used for clamping the prefabricated anti-collision wall; the fixing assemblies are distributed at the tops of the template assemblies and comprise fixing bolts and rotating nuts, the fixing bolts simultaneously penetrate through the first template and the second template, the fixing bolts are in threaded connection with the rotating nuts, and bolt heads of the fixing bolts and the rotating nuts are used for clamping the template assemblies; a plurality of clamping component's distribution direction with fixed component's distribution direction is unanimous, clamping component includes two-way screw rod and two movable rods, first template with each fixedly connected with in the bottom of second template is one the movable rod, two the movable rod all extends to the top of template component, two the movable rod is articulated, the screw thread section that two-way screw rod is different respectively with one the movable rod threaded connection.
Through adopting above-mentioned technical scheme, when the template is pour in the installation, to pour the clearance department of template installation between two adjacent prefabricated crashproof walls, it is fixed with the upper portion of first template and second template through the mounting, the rethread clamping component presss from both sides the lower part of first template and second template tightly, the fixed to the template subassembly has been realized, constructor only need adjust swivel nut and two-way screw rod, can realize the fixed of template with press from both sides tightly, do not need constructor to carry out the formwork erection 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. the method includes the steps that firstly, the multiple sections of prefabricated anti-collision walls are placed on a bridge structure, and only the two sides of a space between every two adjacent prefabricated anti-collision walls are built with templates, so that the multiple sections of prefabricated anti-collision walls can be connected, and the workload of building and disassembling the templates is reduced;
2. concrete is poured into the reserved space, so that the stability of connection between the prefabricated anti-collision wall and the bridge structure can be enhanced;
3. the auxiliary port can assist in concrete pouring, so that concrete in the reserved space is more uniform and filled;
4. the fixing assembly and the clamping assembly facilitate installation of the formwork assembly.
Drawings
FIG. 1 is a schematic structural diagram of a bridge construction according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a prefabricated impact wall according to an embodiment of the present application;
FIG. 3 is a schematic view of the construction of a block of an embodiment of the present application;
FIG. 4 is a schematic view of the structure of a spacer bar according to an embodiment of the present application;
FIG. 5 is a schematic structural view of the prefabricated impact 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 structural view of a pouring form according to an embodiment of the present disclosure;
FIG. 11 is a schematic structural view of a casting form according to an embodiment of the present disclosure;
fig. 12 is an enlarged view at D in fig. 10.
Description of reference numerals: 1. a bridge structure; 11. reserving a 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. hooping; 212. an auxiliary port; 2121. a vertical wall; 2122. a bottom wall; 2123. an inclined wall; 2124. limiting the reinforcing steel bars; 213. a plugging block; 2131. a limiting hole; 2132. a third reinforcing bar; 22. positioning blocks; 221. positioning the reinforcing steel bars; 222. a second reinforcing bar; 223. reserving space; 23. blocking strips; 3. pouring a template; 31. a template assembly; 311. a first template; 312. a second template; 32. a fixing assembly; 321; a fixing sheet; 322. fixing the 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 with reference to figures 1-12.
The embodiment of the application discloses a construction method of a bridge anti-collision retaining wall.
A construction method of a bridge anti-collision retaining wall comprises the following steps:
prefabrication:
the bridge structure 1 and the prefabricated anti-collision wall 2 are manufactured in advance.
Referring to fig. 1, the bridge structure 1 is a box girder, rectangular strip-shaped preformed grooves 11 are reserved on two sides of the bridge structure 1 in the length direction, the preformed grooves 11 are arranged on the top wall of the bridge structure 1, the length direction of the preformed grooves 11 is consistent with the length direction of the bridge structure 1, and the inner walls of the two sides of the preformed grooves 11 in the length direction extend out of the extension steel bars 111.
Referring to fig. 2, the prefabricated anti-collision wall 2 includes a wall body 21, a positioning block 22 and a barrier strip 23, the wall body 21 is a protective wall structure with a small upper end and a large lower end, the wall body 21 has a certain length, and first steel bars 211 extend from both ends of the wall body 21 in the length direction.
Referring to fig. 2, the positioning block 22 is rectangular and in the shape of a rectangle, the positioning block 22 and the wall 21 are integrally cast during casting, the positioning block 22 is integrally connected to the bottom wall of the wall 21, the length direction of the positioning block 22 is the same as that of the wall 21, the lengths of the wall 21 and the positioning block 22 are the same, the positioning steel bars 221 extend from both sides of the positioning block 22 in the length direction, the second steel bars 222 extend from the bottom of the prefabricated anti-collision wall 2, the second steel bars 222 extend towards one side of the positioning block 22 away from the wall 21, and the end portions of the extending sections of the second steel bars 222 are bent into an anchoring structure.
Referring to fig. 2, the length direction of the barrier 23 is the same as the length direction of the wall 21, the length of the barrier 23 is the same as the length of the wall 21, the barrier 23 is integrally connected with the wall 21, the barrier 23 is located on one side of the length direction of the wall 21, the barrier 23 is located on the bottom wall of the wall 21, and the protruding direction of the barrier 23 is the same as the protruding direction of the positioning block 22.
Referring to fig. 3 and 4, an auxiliary opening 212 is formed in the wall body 21, the auxiliary opening 212 is located on a 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 located on different sides of the wall body 21 in the length direction; the auxiliary opening 212 comprises four inner walls, two inner walls are vertical walls 2121, the vertical walls 2121 are two inner walls of the auxiliary opening 212 and the wall body 21 distributed in the same direction along the length direction, and when the large end of the wall body 21 is placed downwards and the small end of the wall body is placed upwards, the wall surface of the vertical wall 2121 is arranged along the vertical direction; the auxiliary opening 212 further has two inner walls, one is a bottom wall 2122 and the other is an inclined wall 2123, the bottom wall 2122 is also vertically arranged, the bottom wall 2122 is the most bottom inner wall of the auxiliary opening 212, the inclined wall 2123 is located above the bottom wall 2122 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.
Referring to fig. 3 and 4, a blocking block 213 is detachably connected in the auxiliary port 212, the shape of the blocking block 213 is matched with that of the auxiliary port 212, and when the blocking block 213 is installed, the side wall of the wall 21 with the auxiliary port 212 is a plane; the bottom wall 2122 extends to form a limiting steel bar 2124, the blocking block 213 is provided with a limiting hole 2131, the limiting steel bar 2124 is inserted into the limiting hole 2131, and after the limiting steel bar 2124 is inserted into the limiting hole 2131, the limiting steel bar 2124 can support the blocking block 213; third reinforcing bars 2132 extend from the inside of the blocking block 213, and when the blocking block 213 is installed in the auxiliary opening 212, the extending direction of the third reinforcing bars 2132 is the same as the extending direction of the second reinforcing bars 222.
Building a bridge structure:
and (3) building the prefabricated bridge structure 1 on a pier through a bridge girder erection machine.
Installing a prefabricated anti-collision wall:
referring to fig. 5, 6 and 7, mortar 12 is coated on two sides of the length direction of the preformed groove 11, the prefabricated anti-collision walls 2 are arranged on the bridge structure 1, the plurality of sections of prefabricated anti-collision walls 2 are arranged at intervals, the prefabricated anti-collision walls 2 have a certain length, and after the prefabricated anti-collision walls 2 are installed, the length direction of the prefabricated anti-collision walls 2 is consistent with the length direction of the bridge structure 1; after the installation is finished, cleaning away the mortar 12 overflowing the gap; after the prefabricated anti-collision wall 2 is installed, the stirrups 2111 are bound outside the first reinforcing steel bars 211 adjacent to each other on the adjacent prefabricated anti-collision wall 2.
Referring to fig. 6 and 7, the width of the bottom wall of the wall body 21 is greater than the width of the preformed groove 11, the width of the positioning block 22 is less than the width of the preformed groove 11, the positioning block 22 is used for extending into the preformed groove 11, the prefabricated anti-collision wall 2 is installed, and when the positioning block 22 is inserted into the preformed groove 11, the positioning steel bars 221 on the two sides of the positioning block 22 in the length direction are used for being abutted to the inner walls on the two sides of the preformed groove 11 in the length direction, so that the prefabricated anti-collision wall 2 is limited to move.
Referring to fig. 6 and 7, the bottom wall of the wall 21 provided with the positioning block 22 is placed on the top wall of the bridge structure 1, the mortar 12 is applied on the top wall of the bridge structure 1 for bearing the bottom wall of the wall 21, the mortar 12 is located between the bottom wall of the wall 21 and the top wall of the bridge structure 1, a gap is left between the bottom of the positioning block 22 and the bottom wall of the preformed groove 11, a preformed space 223 is defined between the prefabricated anti-collision wall 2 and the inner wall of the preformed groove 11, and the positioning steel bars 221 and the second steel bars 222 are both located in the preformed space 223; when the blocking block 213 is installed in the auxiliary opening 212, the third steel bar 2132 extends into the reserved space 223, and the part of the blocking block 213 away from the bottom wall 2122 is overlapped on the bridge structure 1; after the prefabricated anti-collision wall 2 is installed, the barrier strip 23 is located 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 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, after the prefabricated anti-collision wall 2 is placed on the bridge structure 1, due to the existence of the barrier strips 23, the mortar 12 on one side close to the barrier strips 23 only overflows into the reserved space 223 among the mortars 12 on both sides of each reserved groove 11 in the length direction, the mortar 12 far away from the barrier strips 23 only overflows into the reserved space 223 and also overflows to 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 the cleaning of the mortar 12 overflowing to the top wall of the bridge structure 1; the distance between the adjacent walls 21 is controlled, so that the first steel bars 211 close to the adjacent walls 21 have overlapped parts, and the stirrups 2111 are bound outside the first steel bars 211.
Installing a template:
referring to fig. 10, a pouring template 3 is built between two adjacent sections of prefabricated anti-collision walls 2, and the space between the two adjacent sections of prefabricated anti-collision walls 2 is enclosed in the pouring template 3.
Referring to fig. 11, the casting formwork 3 includes a formwork 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, the first formwork 311 and the second formwork 312 are used for clamping adjacent prefabricated anti-collision walls 2, the middle parts of the first formwork 311 and the second formwork 312 surround the space between the adjacent prefabricated anti-collision walls 2, two ends of the first formwork 311 and the second formwork 312 are used for abutting against the two adjacent wall bodies 21, during installation, the first formwork 311 is located on the inner side of the prefabricated anti-collision wall 2, the second formwork 312 is located on the outer side of the prefabricated anti-collision wall 2, the shapes of the inner molds of the first formwork 311 and the second formwork 312 are matched with the structure of the prefabricated anti-collision wall 2, and after the first formwork 311 and the second formwork 312 are combined and poured, the first formwork can be processed into a structure consistent with the prefabricated anti-collision wall 2, so that the two adjacent prefabricated anti-collision walls 2 are connected together, and the structure is the same after pouring.
Referring to fig. 11 and 12, in the present embodiment, there are two fixing assemblies 32, two fixing assemblies 32 are disposed on the top of the form assembly 31, the distribution direction of the fixing assemblies 32 is the same as the length direction of the bridge structure 1, the fixing assemblies 32 include fixing plates 321, fixing bolts 322 and rotating nuts 323, after the pouring template 3 is installed on the prefabricated anti-collision wall 2, the fixing pieces 321 are located at the tops of the first template 311 and the second template 312, the fixing pieces 321 are welded to the tops of the first template 311 and the second template 312, one fixing bolt 322 simultaneously penetrates through one fixing piece 321 on the first template 311 and one fixing piece 321 on the second template 312, the fixing bolt 322 is welded to the fixing piece 321 on the second template 312, the rotating nut 323 is connected to the fixing bolt 322 in a threaded manner, and a bolt head of the fixing bolt 322 and the rotating nut 323 are used for clamping the first template 311 and the second template 312.
Referring to fig. 11 and 12, in the present embodiment, three clamping assemblies 33 are provided, the distribution directions of the three clamping assemblies 33 are the same as the distribution direction of the fixed assembly 32, the clamping assemblies 33 are distributed in a staggered manner with respect to the fixed assembly 32, each clamping assembly 33 includes two movable rods 332 and a bidirectional screw 331, one movable rod 332 is welded to the bottoms of the first mold plate 311 and the second mold plate 312, each movable rod 332 extends to the upper side of the mold plate assembly 31, for convenience of 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, two screw thread sections of the bidirectional screw 331 are respectively connected with one movable rod 332 through threads, and the bidirectional screw 331 is located above the hinge point of the movable rods 332.
Pouring concrete:
and opening the blocking blocks 213, pouring concrete into the pouring template 3 and the auxiliary port 212 simultaneously to fill the whole reserved space 223 with the concrete, installing the blocking blocks 213 before the concrete is solidified, waiting for the concrete in the reserved space 223 to be solidified after the blocking blocks 213 are installed, and then continuing pouring the concrete into the space surrounded by the pouring template 3 until the two adjacent prefabricated anti-collision walls 2 are poured and connected.
Referring to fig. 7, the inner wall of the auxiliary port 212 and the block piece 213 are provided in the shape of the present application to facilitate removal and installation of the block piece 213.
Removing the template:
and after the poured concrete is solidified to a specified degree, removing the pouring template 3.
The implementation principle of the construction method for the anti-collision retaining wall of the bridge in the embodiment of the application is as follows: when the construction of the anti-collision protecting wall of the bridge is required, 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, the pouring is assisted through the auxiliary ports 212, the reserved space 223 is poured firstly, then the middle connecting section of the adjacent prefabricated anti-collision walls 2 is poured, and after the pouring is finished and the concrete is condensed, the pouring templates 3 are removed; the application furthest has saved the use quantity of template, and the structure of pouring template 3 simultaneously is convenient for install, has reduced constructor's work load.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A construction method of a bridge anti-collision retaining wall comprises the following steps:
prefabricating a bridge structure (1) and a prefabricated anti-collision wall (2);
building the bridge structure (1) prefabricated in advance;
installing a plurality of sections of the prefabricated anti-collision walls (2) on the bridge structure (1), wherein the prefabricated anti-collision walls (2) are arranged at intervals;
building a pouring template (3) between two adjacent sections of the prefabricated anti-collision walls (2), wherein the space between two adjacent sections of the prefabricated anti-collision walls (2) is surrounded in the pouring template (3);
pouring concrete into the pouring template (3);
and after the poured concrete is solidified to a specified degree, removing the pouring template (3).
2. The construction method of the anti-collision retaining wall for the bridge according to claim 1,
the top wall of the bridge structure (1) is provided with at least one row of preformed grooves (11), and the length direction of the preformed 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 positioning blocks (22), the positioning blocks (22) are integrally connected with the wall body (21), and the positioning blocks (22) are used for extending out of the reserved grooves (11).
3. The construction method of the anti-collision retaining wall for the bridge according to claim 2,
when the positioning block (22) is inserted into the preformed groove (11), the side wall of the wall body (21) provided with the positioning block (22) is overlapped 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 preformed groove (11); after the prefabricated anti-collision wall (2) is installed, the prefabricated anti-collision wall (2) and the inner wall of the preformed groove (11) are enclosed to form a preformed space (223), and the space enclosed by the pouring template (3) is communicated with the preformed space (223).
4. The construction method of the anti-collision retaining wall for the bridge according to claim 3,
and before the prefabricated anti-collision wall (2) is installed, mortar (12) is coated on the part, used for placing the wall body (21), of the top wall of the bridge structure (1).
5. The construction method of the anti-collision retaining wall for the bridge according to claim 4,
the positioning steel bars (221) extend out of the positioning blocks (22), and the positioning steel bars (221) are used for being abutted to the inner walls of the two sides of the length direction of the preformed groove (11).
6. The construction method of the anti-collision retaining wall for the bridge according to claim 5,
both sides of the top wall of the bridge structure (1) are provided with reserved grooves (11);
prefabricated crashproof wall (2) still include blend stop (23), blend stop (23) with wall body (21) an organic whole is connected, works as prefabricated crashproof wall (2) installation back that finishes, blend stop (23) are located the outside of bridge construction (1), blend stop (23) bottom extends to bridge construction (1) roof below.
7. The construction method of the anti-collision retaining wall for the bridge according to claim 3,
reinforcing steel bars extend out of the inner wall of the preformed groove (11), the positioning blocks (22) extend out of the reinforcing steel bars, the two adjacent ends of the wall body (21) close to each other extend out of the reinforcing steel bars, and stirrups (2111) are bound outside the reinforcing steel bars extending out of the end portion of the wall body (21).
8. The construction method of the anti-collision retaining wall for the bridge according to claim 3,
an auxiliary opening (212) is reserved on the wall body (21), and a plugging block (213) is detachably connected in the auxiliary opening (212);
after the prefabricated anti-collision wall (2) is installed, the auxiliary opening (212) faces the inner side of the bridge structure (1), and the auxiliary opening (212) is communicated with the outside and the reserved space (223);
when concrete is poured, the blocking blocks (213) are opened, meanwhile, the concrete is poured into the reserved space (223) through the space enclosed by the pouring template (3) and the auxiliary port (212), and after the pouring in the reserved space (223) is finished, the blocking blocks (213) are installed in the auxiliary port (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 pouring is finished.
9. The construction method of an anti-collision retaining wall for a bridge according to claim 8,
limiting steel bars (2124) extend out of the inner wall of the auxiliary port (212), a limiting hole (2131) is formed in the blocking block (213), the limiting steel bars (2124) are inserted into the limiting hole (2131), and the limiting steel bars (2124) are used for supporting the blocking block (213);
and reinforcing steel bars extend out of the blocking block (213), and when the blocking block (213) is installed in the auxiliary port (212), the reinforcing steel bars extending out of the blocking block (213) extend into the reserved space (223).
10. The method for constructing an anti-collision retaining wall of a bridge according to any one of claims 1 to 9,
the pouring template (3) comprises a template component (31), a plurality of fixing components (32) and a plurality of clamping components (33); the formwork assembly (31) comprises a first formwork (311) and a second formwork (312), and the first formwork (311) and the second formwork (312) are used for clamping the prefabricated anti-collision wall (2); a plurality of fixing assemblies (32) are distributed on the top of the template assembly (31), each fixing assembly (32) comprises a fixing bolt (322) and a rotating nut (323), each fixing bolt (322) simultaneously penetrates through the first template (311) and the second template (312), each fixing bolt (322) is in threaded connection with the corresponding rotating nut (323), and the bolt head of each fixing bolt (322) and the corresponding rotating nut (323) are used for clamping the template assembly (31); a plurality of the distribution direction of clamping component (33) with the distribution direction of fixed subassembly (32) is unanimous, clamping component (33) include two-way screw rod (331) and two movable rod (332), first template (311) with each fixedly connected with one in the bottom of second template (312) movable rod (332), two movable rod (332) all extend to the top of template component (31), two movable rod (332) are articulated, the different screw thread section of two-way screw rod (331) respectively with one movable rod (332) threaded connection.
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