CN110565550A - Assembly type self-draining pipe culvert and assembly method thereof - Google Patents
Assembly type self-draining pipe culvert and assembly method thereof Download PDFInfo
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- CN110565550A CN110565550A CN201910936054.1A CN201910936054A CN110565550A CN 110565550 A CN110565550 A CN 110565550A CN 201910936054 A CN201910936054 A CN 201910936054A CN 110565550 A CN110565550 A CN 110565550A
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- pipe culvert
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- bottom plate
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 111
- 239000010959 steel Substances 0.000 claims description 111
- 238000010276 construction Methods 0.000 claims description 22
- 239000004567 concrete Substances 0.000 claims description 17
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 238000007569 slipcasting Methods 0.000 description 9
- 230000008595 infiltration Effects 0.000 description 7
- 238000001764 infiltration Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
Abstract
The invention discloses an assembly type self-drainage pipe culvert and an assembly method thereof, wherein the assembly type self-drainage pipe culvert comprises a plurality of pipe culvert units, and the plurality of pipe culvert units are sequentially spliced along the axial direction to form a complete pipe culvert; each pipe culvert unit comprises a plurality of assembling pieces and a bottom plate; the plurality of assembling pieces comprise a top piece and two side pieces, and the top piece is arranged between the two side pieces; the two ends of the top piece are respectively provided with a top piece bulge, the upper end of the side piece is provided with a side piece groove, and the top piece bulge is arranged in the side piece groove in a matched mode; a drainage channel is arranged between the protrusion of the top plate and the groove of the side plate, and the drainage channels between two adjacent pipe culvert units are communicated; according to the invention, the top sheet protrusion is arranged on the top sheet, the side sheet groove is arranged at the upper end of the side sheet, the top sheet protrusion is matched and connected with the side sheet groove during splicing, the top sheet protrusion does not completely fill the side sheet groove, the drainage channel is arranged between the splicing longitudinal seams, and the water seepage at the splicing longitudinal seams is collected and discharged through the drainage channel, so that the water seepage is prevented from entering the inside of the pipe culvert through the splicing longitudinal seams of the pipe culvert units.
Description
Technical Field
The invention belongs to the technical field of culvert design, manufacture and construction, and particularly relates to an assembled self-draining pipe culvert and an assembling method thereof.
background
at present, three-piece assembled pipe culvert is widely applied to highway construction in China due to the characteristics of prefabricated assembly factories, simple construction, less construction period and the like; however, the traditional three-piece assembled culvert has considerable disadvantages due to the limitations of the structural form and the construction method, such as: 1. all the transverse seams are arranged on the same cross section, the seams are weak points of structural stress, and when the pipe culvert is transversely subjected to large unbalanced force, the seams are easy to deform or even damage; 2. the waterproof at the joints of the pipe culvert is only realized by paving waterproof materials outside the joints, the waterproof materials are mostly organic matters such as waterproof coiled materials and the like, the effective period of the waterproof materials is only about 10 years generally, and after 10 years, the pipe culvert has a great possibility of water leakage; 3. the connection between the spliced steel bars depends on-site welding, the workload of welding operation is large, the difficulty is high, the construction progress is slowed, and the construction cost is increased; 4. the assembled pipe culvert has loose structure, lacks integral connection and has poor integral stress performance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an assembly type self-drainage pipe culvert and an assembly method thereof, and aims to solve the technical problem that water leakage is easy to occur at the seam of the pipe culvert in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
The invention provides an assembled self-draining pipe culvert, which comprises a plurality of pipe culvert units, wherein the plurality of pipe culvert units are sequentially spliced along the axial direction to form a complete pipe culvert; each pipe culvert unit comprises a plurality of assembling pieces and a bottom plate, the assembling pieces are annularly spliced to form a transverse assembling ring, and the bottom plate and the transverse assembling ring are annularly spliced to form an annularly closed pipe culvert unit; the assembling pieces comprise a top piece and two side pieces, the top piece is arranged between the two side pieces, one end of the top piece is connected with the upper end of one side piece in a matched mode, the other end of the top piece is connected with the upper end of the other side piece in a matched mode, and two ends of the bottom plate are respectively connected with the lower ends of the two side pieces in a matched mode; the two ends of the top piece are respectively provided with a top piece bulge, the upper end of the side piece is provided with a side piece groove, and the top piece bulge is arranged in the side piece groove in a matched mode; and a drainage channel is arranged between the top plate protrusion and the side plate groove, and the drainage channels between two adjacent pipe culvert units are communicated.
Furthermore, the lengths of two adjacent assembling pieces in the same pipe culvert unit are different; when two adjacent pipe culvert units are spliced, the splicing transverse seams of two adjacent assembling pieces are arranged in a staggered manner.
Further, the assembling piece comprises an assembling piece body, an assembling piece longitudinal steel bar, an assembling piece transverse steel bar, a reserved connecting steel bar and a pre-buried sleeve; the assembling piece body is coated on the outer sides of the assembling piece longitudinal steel bars and the assembling piece transverse steel bars, and the assembling piece longitudinal steel bars and the assembling piece transverse steel bars are arranged in a criss-cross mode; connecting steel bars are reserved and one end of the assembling piece body is arranged, and the embedded sleeve is embedded at the other end of the assembling piece body; one end of the reserved connecting steel bar is fixedly connected with the longitudinal steel bar of the assembling piece, and the other end of the reserved connecting steel bar extends to the outer side of the assembling piece body; the reserved connecting steel bars of the assembling pieces in one pipe culvert unit penetrate through the embedded sleeves of the corresponding assembling pieces in the previous pipe culvert unit, and the embedded sleeves are filled with cement paste.
Further, the upper portion of assembling piece body is provided with the injected hole, and the lower extreme and the buried sleeve intercommunication in injected hole, the upper end and the external world intercommunication in injected hole, injected hole are used for setting up the slip casting pipe, can be to the cement mortar of pouring in the buried sleeve through the slip casting pipe.
the system further comprises a prestressed anchor cable, wherein one end of the prestressed anchor cable is fixedly connected with the foremost pipe culvert unit, and the other end of the prestressed anchor cable is fixedly connected with the rearmost pipe culvert unit; reserved anchor cable holes are arranged in the assembling piece body in a penetrating mode; reserved anchor cable holes on corresponding assembling pieces in two adjacent pipe culvert units are arranged in a penetrating way; the prestressed anchor cable is arranged in the reserved anchor cable hole in a penetrating mode.
Further, still including prefabricated steel bow member, prefabricated steel bow member sets up along the axis direction interval of pipe culvert, and the inboard at the pipe culvert unit is established to prefabricated steel bow member cover, fixed connection between prefabricated steel bow member and the pipe culvert unit.
Furthermore, the prefabricated steel arch comprises two semicircular arches, arch connecting plates and arch connecting bolts, wherein the two semicircular arches are symmetrically arranged on the inner sides of the pipe culvert units; two ends of the two semicircular arches are respectively provided with an arch center connecting plate, and upper arch center connecting plates of the two semicircular arches are fixedly connected through bolts; the semicircular arch frame is provided with an assembling sheet connecting bolt hole, the assembling sheet is provided with a corresponding mounting bolt hole, and the connecting bolt sequentially penetrates through the assembling sheet connecting bolt hole and the mounting bolt hole to fixedly connect the assembling sheet and the semicircular arch frame together.
Furthermore, the lower end of the side piece is provided with a connecting boss, the two ends of the bottom plate are respectively provided with a connecting groove, and the connecting boss at the lower end of the side piece is connected with the connecting groove of the bottom plate in a matching manner.
further, the bottom plate comprises bottom plate concrete, bottom plate longitudinal steel bars and bottom plate transverse steel bars, the bottom plate concrete is coated on the outer sides of the bottom plate longitudinal steel bars and the bottom plate transverse steel bars, and the bottom plate longitudinal steel bars and the bottom plate transverse steel bars are arranged in a criss-cross mode; the lower ends of the transverse reinforcing steel bars of the assembling pieces in the two side pieces extend into the bottom plate concrete; the transverse steel bars of the bottom plate and the transverse steel bars of the assembling pieces are fixedly connected together through steel bar connecting sleeves; the bottom plate concrete adopts cast-in-place concrete.
The invention also provides an assembly method of the assembly type self-draining pipe culvert, which comprises the following steps:
Step 1, hoisting two side pieces of a first pipe culvert unit, hoisting a top piece of the first pipe culvert unit, and completely clamping the protrusion of the top piece in a groove of the side piece;
Step 2, after the first pipe culvert unit is assembled, starting to hoist the two side plates of the second pipe culvert unit, then hoisting the top plate of the second pipe culvert unit, and during assembly, the drainage channel at the splicing longitudinal seam is smooth;
Step 3, repeating the step 2, and sequentially completing the hoisting of each pipe culvert unit in the middle;
And 4, after hoisting all the pipe culvert units, carrying out bottom plate construction.
Compared with the prior art, the invention has the beneficial effects that:
The invention provides an assembled self-draining pipe culvert, which is characterized in that a top plate bulge is arranged on a top plate, a side plate groove is arranged at the upper end of a side plate, the top plate bulge is matched and connected with the side plate groove during splicing, the top plate bulge does not completely fill the side plate groove, a drainage channel is arranged between the top plate bulge and the side plate groove, the drainage channel can collect seepage water at the splicing longitudinal seam of pipe culvert units, the seepage water is collected and discharged through the drainage channel, and the seepage water is prevented from entering the inside of the pipe culvert through the splicing longitudinal seam of the pipe culvert units after a waterproof layer on the outer layer of the pipe culvert is failed due to longer service life of the pipe culvert or other reasons, so that the phenomenon of seepage.
Further, the assembly pieces of two adjacent pipe culvert units are set to be different lengths, the splicing transverse seam is located on different sections during assembly piece splicing, and the pipe culvert is prevented from being greatly displaced or damaged at the splicing transverse seam when being subjected to larger offset stress.
furthermore, a reserved connecting steel bar is arranged at one end of the assembling piece, and a pre-buried sleeve is arranged at the other end of the assembling piece; during splicing construction, reserved connecting steel bars of the current pipe culvert units are connected with the embedded sleeves of the previous pipe culvert units in an inserting mode, and cement slurry is poured into the embedded sleeves for fixing, so that firm connection of assembling pieces in two adjacent pipe culvert units is guaranteed, and the integrity and stability of a pipe culvert structure are improved; the field welding process is reduced, the construction period is saved, and the construction progress is accelerated.
furthermore, through set up the slip casting hole on the assembly piece body, be convenient for carry out grout to the construction of filling in the pre-buried sleeve.
Furthermore, all the assembling pieces in the pipe culvert structure are connected in series by adopting the prestressed anchor cables, so that the integrity of the pipe culvert structure is ensured; make zonulae occludens between each assembly piece of same axis direction, reduced and spliced horizontal seam department between the assembly piece and taken place the infiltration.
Further, support and retrain interval hoop arch ring through setting up prefabricated steel bow member, ensured the annular wholeness and the stability of pipe culvert structure, guarantee when receiving great partial stress, great displacement can not appear in the pipe culvert, has improved the bearing capacity of pipe culvert.
Furthermore, the side plate is connected with the bottom plate through the matching of the connecting lug boss and the connecting groove, so that the structural stability is improved, and the water seepage at the joint of the side plate 112 and the bottom plate 12 is reduced
further, through being in the same place bottom plate horizontal reinforcing bar and the horizontal reinforcing bar fixed connection of assembly piece, the wholeness has improved between assembly piece and the bottom plate, has strengthened the stability of structure.
the invention also provides an assembly method of the assembled self-draining pipe culvert, which has simple assembly process and lower requirement on hoisting equipment; the assembly process does not need on-site welding, thereby saving the construction period and accelerating the construction progress.
drawings
FIG. 1 is a schematic view of the overall structure of an assembled self-draining culvert according to the present invention;
FIG. 2 is a schematic cross-sectional view of an assembled self-draining culvert according to the present invention;
FIG. 3 is an axial view of a top plate of a fabricated self-draining culvert according to the present invention;
FIG. 4 is a schematic longitudinal cross-sectional view of a top plate of a fabricated self-draining culvert according to the present invention;
FIG. 5 is an axial view of a side piece of a fabricated self-draining culvert according to the present invention;
FIG. 6 is a schematic longitudinal cross-sectional view of a side piece of an assembled self-draining culvert according to the present invention;
FIG. 7 is a schematic cross-sectional view of a bottom plate of a fabricated self-draining culvert according to the present invention;
FIG. 8 is a schematic longitudinal cross-sectional view of a bottom plate of a fabricated self-draining culvert according to the present invention;
FIG. 9 is a schematic structural view of a pre-stressed anchor cable in an assembled self-draining culvert according to the present invention;
FIG. 10 is a schematic structural view of a prefabricated steel arch in an assembled self-draining culvert according to the present invention;
FIG. 11 is a schematic cross-sectional view of a prefabricated steel arch in an assembled self-draining culvert according to the present invention;
FIG. 12 is a schematic view of a high-strength straight bolt structure in an assembled self-draining culvert according to the present invention;
Fig. 13 is a schematic structural view of a high-strength bent bolt in an assembled self-draining pipe culvert according to the present invention.
Wherein, 1, the pipe culvert unit, 2, the prestressed anchor cable, 3, the prefabricated steel arch frame and 4 are connected with bolts; 11 assembly pieces, 12 bottom plates; 111 top piece, 112 side piece, 113 top piece bulge, 114 side piece groove, 115 connecting boss; 120 connecting the boss; 101, 102, 103, 104, 105, 106, 107 and 108 steel meshes; 121 bottom plate concrete, 122 bottom plate longitudinal steel bars, 123 bottom plate transverse steel bars and 124 steel bar connecting sleeves; 21 guide heads, 22 steel strands, 23 backing plates, 24 anchor plates, 25 protective covers and 26 hoop belts; 31 semicircular arch, 32 arch connecting plates and 33 arch connecting bolts; 311 wing plates, 312 webs.
Detailed Description
in order to better explain the technical solution of the present invention, the following detailed description will be made with reference to the accompanying drawings, which are only a part of the embodiments of the present invention and are not intended to be a complete representation of the embodiments of the present invention.
as shown in the attached drawings 1-13, the invention provides an assembled self-draining pipe culvert, which comprises a plurality of pipe culvert units 1, prestressed anchor cables 2, prefabricated steel arch frames 3 and connecting bolts 4, wherein the plurality of pipe culvert units 1 are sequentially spliced in the axial direction to form a complete pipe culvert; the prestressed anchor cables 2 sequentially penetrate through all the pipe culvert units 1, and all the pipe culvert units 1 are connected in series to form a whole; one end of the prestressed anchor cable 2 is fixedly connected with the foremost pipe culvert unit, and the other end of the prestressed anchor cable 2 is fixedly connected with the rearmost pipe culvert unit; prefabricated steel bow member 3 sets up along the axis direction interval of pipe culvert, and 3 covers of prefabricated steel bow member are established in the inboard of pipe culvert unit 1, through connecting bolt 4 fixed connection between prefabricated steel bow member 3 and the pipe culvert unit 1, and 3 appearance structures of prefabricated steel bow member suit with culvert section structure.
Each pipe culvert unit 1 comprises a plurality of assembling pieces 11 and a bottom plate 12, the assembling pieces 11 are annularly spliced to form a transverse assembling ring, and the bottom plate 12 and the transverse assembling ring are annularly spliced to form an annularly closed pipe culvert unit; the plurality of assembling pieces 11 comprise a top piece 111 and two side pieces 112, the top piece 111 is arranged between the two side pieces 112, one end of the top piece 111 is connected with the upper end of one side piece 112 in a matching way, and the other end of the top piece 111 is connected with the upper end of the other side piece 12 in a matching way; the two ends of the lower side of the bottom plate 2 are respectively connected with the lower ends of the two side pieces in a matching way; top piece bulges 113 are arranged at both ends of the top piece 111, and the top piece bulges 113 are arranged along the axial direction of the pipe culvert; the upper end of the side piece 112 is provided with a side piece groove 114, and the side piece groove 114 is arranged along the axial direction of the pipe culvert; the top sheet protrusion 113 at one end of the top sheet 111 is matched and arranged in the side sheet groove 114 at the upper end of one side sheet 112, and the top sheet protrusion 113 at the other end of the top sheet 111 is matched and arranged in the side sheet groove 114 at the upper end of the other side sheet 112; a drainage channel 5 is arranged between the top sheet protrusion 113 and the side sheet groove 114, and the drainage channels between two adjacent pipe culvert units 1 are communicated; the drainage channel in the whole pipe culvert is provided with 1% -2% of drainage gradient; set up drainage channel through the concatenation longitudinal joint department between assembly pieces 11, this drainage channel can collect along the infiltration of pipe culvert unit concatenation longitudinal joint department, discharges through collecting of drainage channel to the infiltration, has avoided when the longer or other reasons of pipe culvert service life lead to the outer waterproof layer of pipe culvert after becoming invalid, and the infiltration gets into inside the pipe culvert through the concatenation longitudinal joint of pipe culvert unit, has guaranteed that the inside water seepage phenomenon that does not take place of pipe culvert.
the lower extreme of lateral plate 112 is provided with connecting boss 115, and the both ends of bottom plate 12 are provided with connecting groove 120 respectively, and connecting boss 115 and the connecting groove 120 cooperation of bottom plate 12 of lateral plate 112 lower extreme are connected, have realized the effective connection of lateral plate 112 with bottom plate 12, have improved the stability of structure, have reduced the infiltration of lateral plate 112 with bottom plate 12 seam crossing.
in the same pipe culvert unit 1, the lengths of two adjacent assembling pieces 11 are different; when two adjacent pipe culvert units 1 are spliced, the splicing transverse seams of the corresponding assembling pieces 11 are arranged in a staggered manner; when two adjacent pipe culvert units 1 are spliced, the splicing transverse seam is positioned on different sections, so that the pipe culvert is prevented from generating large displacement or damage at the splicing transverse seam when the pipe culvert receives large offset stress.
the assembling piece 11 comprises an assembling piece body 101, an assembling piece longitudinal steel bar 102, an assembling piece transverse steel bar 103, a reserved connecting steel bar 104, a pre-buried sleeve 105, a grouting hole 106, a reserved anchor cable hole 107 and a steel mesh 108;
The assembling piece longitudinal steel bars 102 are arranged along the axial direction of the pipe culvert, the assembling piece transverse steel bars 103 are arranged in a direction perpendicular to the axial direction of the pipe culvert, and the assembling piece longitudinal steel bars 102 and the assembling piece transverse steel bars 103 are arranged in a criss-cross mode; the assembling piece body 101 is coated on the outer sides of the assembling piece longitudinal reinforcing steel bars 102 and the assembling piece transverse reinforcing steel bars 103; the reserved connecting steel bars 104 are arranged at one end of the assembling piece body 101, and the embedded sleeves 105 are embedded at the other end of the assembling piece body 101; one end of the reserved connecting steel bar 104 is fixedly connected with the assembling piece longitudinal steel bar 102, and the other end of the reserved connecting steel bar 104 extends to the outer side of the assembling piece body 101; the reserved connecting steel bars 104 of the assembling pieces 1 in one pipe culvert unit 1 penetrate through the embedded sleeves 105 of the corresponding assembling pieces 11 in the previous pipe culvert unit 1, and the embedded sleeves 105 are filled with cement paste; preferably, the reserved connecting steel bars 104 are formed by extending the longitudinal steel bars of the assembling pieces by 20cm outwards and inserting the longitudinal steel bars into the corresponding embedded sleeves.
the upper portion of assembling piece body 101 is provided with slip casting hole 106, the lower extreme and the buried sleeve 105 intercommunication of slip casting hole 106, the upper end and the external world intercommunication of slip casting hole 106, slip casting hole 106 is used for setting up the slip casting pipe, can pour into the grout in buried sleeve 105 through the slip casting pipe, ensure to reserve connecting reinforcement 104 and buried sleeve 105's fixed connection, and then realized the axis connection of assembling piece 11, realized the concatenation location of pipe culvert unit 1.
Reserved anchor cable holes 107 are arranged in the assembly piece body 101 in a penetrating manner, and the reserved anchor cable holes 107 on the corresponding assembly pieces 1 in the two adjacent pipe culvert units 1 are arranged in a penetrating manner; the prestressed anchor cable 2 is arranged in the reserved anchor cable hole 107 in a penetrating mode; a plurality of assembling pieces in the same axial direction are connected in series in the pipe culvert through the prestressed anchor cables 2, so that the assembling pieces are tightly connected, the possibility of water seepage at the assembling piece splicing transverse seam is reduced, and the integrity of the pipe culvert structure is improved.
The steel mesh piece 108 is arranged in the assembly piece body 101, and the structural strength of the assembly piece 11 is improved and the stability of the pipe culvert is effectively enhanced by arranging the steel mesh piece 108.
the bottom plate 12 comprises bottom plate concrete 121, bottom plate longitudinal steel bars 122 and bottom plate transverse steel bars 123, the bottom plate longitudinal steel bars 122 are arranged along the axial direction of the pipe culvert, the bottom plate transverse steel bars 123 are arranged perpendicular to the axial direction of the pipe culvert, and the bottom plate longitudinal steel bars 122 and the bottom plate transverse steel bars 123 are arranged in a criss-cross mode; the bottom plate concrete 121 is coated on the outer sides of the bottom plate longitudinal reinforcing steel bars 122 and the bottom plate transverse reinforcing steel bars 123; the lower ends of the transverse reinforcing steel bars 103 of the assembling pieces in the two side pieces extend into the bottom plate concrete 121; the transverse reinforcing steel bar 123 of the bottom plate and the transverse reinforcing steel bar 103 of the assembling piece are fixedly connected together through a reinforcing steel bar connecting sleeve 124; by fixedly connecting the transverse reinforcing steel bars 123 of the bottom plate and the transverse reinforcing steel bars 103 of the assembling pieces together, the integrity between the assembling pieces and the bottom plate is improved, and the stability of the structure is enhanced; the floor concrete 121 is cast-in-place concrete.
The prestressed anchor cable 2 comprises a guide head 21, a steel strand 22, a backing plate 23, an anchor plate 24, a protective cover 25 and a hoop 26, wherein the guide head 21 is arranged at one end of the steel strand 22, the guide head 21 is fixedly arranged on the assembling piece 1 of the foremost pipe culvert unit 1, the steel strand 22 sequentially penetrates through and is correspondingly arranged in the reserved anchor cable holes 107, the backing plate 23 is arranged at the other end of the steel strand 22 and is tightly attached to the assembling piece body 101 of the rearmost pipe culvert unit 1, the anchor plate 24 is arranged at the rear end of the backing plate 23, and the protective cover 25 is arranged at the outer side of the anchor plate 24; the hoops 26 are arranged on the steel strands 22 at intervals, so that the steel strands 23 are supported; after the prestressed anchor cable 2 is tensioned, cement slurry is poured into the reserved anchor cable hole 107 for filling; the steel strand 23 adopts a plurality of steel strands which are bundled into one strand through a hoop; the guide head is detachable, the anchor plate is provided with a grouting small hole, and after the steel strand is tensioned, grouting slurry is poured into the reserved anchor cable hole through the grouting small hole to fill and fix the steel strand.
The prefabricated steel arch 3 comprises two semicircular arches 31, arch connecting plates 32 and arch connecting bolts 33, the two semicircular arches 31 are symmetrically arranged on the inner side of the pipe culvert unit 1, the arch connecting plates 32 are respectively arranged at two ends of the two semicircular arches 31, arch connecting bolt holes are formed in the arch connecting plates 32, and the arch connecting bolts 33 penetrate through the arch connecting bolt holes to fixedly connect the two semicircular arches 31 together; wherein, the arch frame connecting plates on the two semicircular arch frames 31 are connected by adopting high-strength straight bolts; the semicircular arch frame 31 is provided with an assembling sheet connecting bolt hole, the assembling sheet 11 is provided with a corresponding mounting bolt hole, and the connecting bolt 4 sequentially penetrates through the assembling sheet connecting bolt hole and the mounting bolt hole to fixedly connect the assembling sheet 11 and the semicircular arch frame 31 together; the connecting bolt 4 adopts a high-strength bent bolt, and a gasket is arranged between the high-strength bent bolt and the assembling piece.
The semicircular arch 31 comprises a wing 311 and a web 312; the wing plates 311 are arranged in parallel with the axis of the pipe culvert, the web plates 312 are vertically welded on the inner sides of the wing plates 311, web plate openings are uniformly formed in the web plates 312, the self weight of the arch frame structure is reduced, and the moving in the construction process is facilitated; the mounting piece connecting bolt holes are formed in the wing plate 311, and the mounting piece connecting bolts sequentially penetrate through the mounting piece connecting bolt holes and the mounting bolt holes to fixedly connect the mounting pieces with the semicircular arch frame 31.
The invention relates to an assembly method of an assembled self-draining pipe culvert, which comprises the following steps:
Step 1, respectively hoisting two semicircular arches in place according to a design position; connecting the two semicircular arches into a whole through arch connecting bolts to complete the assembly of the prefabricated steel arch;
Step 2, hoisting two side pieces of the first pipe culvert unit according to the prefabricated steel arch frame as a positioning basis, and then hoisting a top piece of the first pipe culvert unit; when the prefabricated steel arch centering device is hoisted, the top sheet protrusion of the top sheet is completely clamped in the side sheet groove of the side sheet, and meanwhile, the mounting bolt holes in the assembling sheet are ensured to be in one-to-one correspondence with the assembling sheet connecting bolt holes in the prefabricated steel arch centering, so that the assembling sheet is fixedly connected with the prefabricated steel arch centering by adopting assembling sheet connecting bolts;
Step 3, when the first pipe culvert unit is assembled, starting to hoist the two side plates of the second pipe culvert unit, and then hoisting the top plate of the second pipe culvert unit; when the second pipe culvert unit is hoisted, the annular transverse seams of the assembling pieces are arranged in a staggered manner; during hoisting, the reserved connecting steel bars of the second pipe culvert unit are ensured to be inserted into the embedded sleeves of the first pipe culvert unit in an aligning manner, and the grouting holes are ensured not to be blocked; the drainage channel at the splicing longitudinal joint is smooth, and all reserved anchor cable holes between the corresponding assembling pieces are communicated;
step 4, repeating the step 3, and sequentially completing the hoisting of each pipe culvert unit in the middle;
Step 5, after the last pipe culvert unit is hoisted, beginning prestressed anchor cable construction, and after the prestressed anchor cable is tensioned, pouring cement slurry into the reserved anchor cable hole; then, injecting cement slurry into the embedded sleeve through a grouting pipe, and plugging a grouting hole after the completion;
step 6, adjusting the prefabricated steel arch centering to enable the mounting bolt holes on the assembling pieces to correspond to the assembling piece connecting bolt holes on the prefabricated steel arch centering one by one; fixedly connecting the assembling pieces with the prefabricated steel arch centering by adopting assembling piece connecting bolts;
Step 7, performing waterproof treatment on the spliced seams by adopting a waterproof treatment method, preferably, performing waterproof treatment on the spliced seams by adopting polyurethane waterproof coating and modified asphalt waterproof coiled materials;
And 8, connecting the transverse steel bars of the assembling pieces at the lower ends of the side pieces with the transverse steel bars of the bottom plate by using the steel bar connecting sleeve, erecting the mold, and pouring the concrete of the bottom plate.
the invention provides an assembled self-draining pipe culvert, which comprises a plurality of pipe culvert units, wherein each pipe culvert unit comprises two types of assembling pieces, namely a top piece and a side piece; in the same pipe culvert unit, the length and the size of each assembling piece are different, so that when two adjacent pipe culvert units are spliced, splicing transverse seams are not in the same vertical plane; the pipe culvert is guaranteed not to be greatly displaced or damaged along the splicing transverse seam when being subjected to large offset stress. The top piece bulges are arranged at the two ends of the top piece, the lateral piece groove is arranged at the upper end of the lateral piece, when the top piece is spliced with the lateral piece, the top piece bulges are matched and connected with the lateral piece groove, when the top piece is spliced with the lateral piece, the top piece bulges are just embedded into the lateral piece groove, and simultaneously the lateral piece groove is not completely blocked, so that a cavity with a certain cross section is formed between the top piece bulges and the lateral piece groove and is used as a; the drainage channels of two adjacent pipe culvert units are provided with 1% -2% drainage gradient along the designed drainage direction; through setting up from drainage channel in concatenation longitudinal joint department, drainage channel can collect the infiltration of concatenation longitudinal joint department, has avoided the infiltration to get into inside the pipe culvert through the concatenation longitudinal joint.
According to the invention, the assembling pieces in the same axial direction of the pipe culvert are connected in series through the prestressed anchor cables, so that the integrity of the pipe culvert structure is ensured, the assembling pieces are tightly connected, and the water seepage possibility at the splicing transverse seam is reduced.
According to the invention, the prefabricated steel arch rings are arranged at intervals, so that the circumferential support and restraint of the pipe culvert units are realized, the circumferential integrity and stability of the pipe culvert are ensured, the pipe culvert units are prevented from generating large displacement when being subjected to large offset stress, and the bearing capacity of the pipe culvert is fully exerted.
In the invention, the corresponding assembling pieces in the two adjacent pipe culvert units are connected by adopting a sleeve grouting technology, so that the axial splicing firmness of the assembling pieces and the integrity of the pipe culvert are ensured, meanwhile, the on-site welding process is reduced, the construction period is saved, and the construction progress is accelerated. The assembling pieces can be prefabricated in factories, and during field connection, high-strength bolts and sleeves are adopted for grouting, so that field welding is not needed, and the construction progress is greatly accelerated.
The system comprises a prestressed anchor cable, a prefabricated steel arch frame and connecting bolts, wherein a plurality of pipe culvert units are sequentially spliced in the axial direction to form a complete pipe culvert; the prestressed anchor cables sequentially penetrate through all the pipe culvert units, and all the pipe culvert units are connected in series to form a whole; one end of the prestressed anchor cable is fixedly connected with the foremost pipe culvert unit, and the other end of the prestressed anchor cable is fixedly connected with the rearmost pipe culvert unit; the prefabricated steel arch frames are arranged at intervals along the axis direction of the pipe culvert and fixedly connected with the pipe culvert units through connecting bolts, and the appearance structure of the prefabricated steel arch frames is adapted to the section structure of the culvert
the foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The assembly type self-drainage pipe culvert is characterized by comprising a plurality of pipe culvert units (1), wherein the plurality of pipe culvert units (1) are sequentially spliced along the axial direction to form a complete pipe culvert; each pipe culvert unit (1) comprises a plurality of assembling pieces (11) and a bottom plate (12), the assembling pieces (11) are annularly spliced to form a transverse assembling ring, and the bottom plate (2) and the transverse assembling ring are annularly spliced to form an annularly closed pipe culvert unit; the assembling pieces (11) comprise a top piece (111) and two side pieces (112), the top piece (111) is arranged between the two side pieces (112), one end of the top piece (111) is connected with the upper end of one side piece (112) in a matched mode, the other end of the top piece (111) is connected with the upper end of the other side piece (112) in a matched mode, and two ends of the bottom plate (12) are connected with the lower ends of the two side pieces (12) in a matched mode respectively; the two ends of the top sheet (111) are respectively provided with a top sheet protrusion (113), the upper end of the side sheet (112) is provided with a side sheet groove (114), and the top sheet protrusion (113) is arranged in the side sheet groove (114) in a matching way; drainage channels are arranged between the top sheet bulges (113) and the side sheet grooves (114), and the drainage channels between two adjacent pipe culvert units are communicated.
2. The assembly type self-draining pipe culvert according to claim 1, wherein the lengths of two adjacent assembly pieces (1) in the same pipe culvert unit (1) are different; when two adjacent pipe culvert units (1) are spliced, the splicing transverse seams of two adjacent assembling pieces (1) are arranged in a staggered manner.
3. the assembled self-draining culvert according to claim 1, wherein the assembling piece (11) comprises an assembling piece body (101), an assembling piece longitudinal steel bar (102), an assembling piece transverse steel bar (103), a reserved connecting steel bar (104) and an embedded sleeve (105); the assembling piece body (101) is covered on the outer sides of the assembling piece longitudinal steel bars (102) and the assembling piece transverse steel bars (103), and the assembling piece longitudinal steel bars (102) and the assembling piece transverse steel bars (103) are arranged in a criss-cross mode; the reserved connecting steel bars (104) are arranged at one end of the assembling piece body (101), and the embedded sleeves (105) are embedded at the other end of the assembling piece body (101); one end of the reserved connecting steel bar (104) is fixedly connected with the longitudinal steel bar (102) of the assembling piece, and the other end of the reserved connecting steel bar (104) extends to the outer side of the assembling piece body (101); the reserved connecting steel bars (104) of the assembling pieces (1) in one pipe culvert unit (1) penetrate through the embedded sleeves (105) of the corresponding assembling pieces (11) in the previous pipe culvert unit (1), and cement paste is filled in the embedded sleeves (105).
4. The assembled self-draining pipe culvert according to claim 3, wherein the upper part of the assembling piece body (101) is provided with a grouting hole (106), the lower end of the grouting hole (106) is communicated with the embedded sleeve (105), the upper end of the grouting hole (106) is communicated with the outside, the grouting hole (106) is used for arranging a grouting pipe, and cement slurry can be poured into the embedded sleeve (105) through the grouting pipe.
5. The assembled self-draining pipe culvert according to claim 3, further comprising a pre-stressed anchor cable (2), wherein one end of the pre-stressed anchor cable (2) is fixedly connected with the frontmost pipe culvert unit, and the other end of the pre-stressed anchor cable (2) is fixedly connected with the endmost pipe culvert unit; reserved anchor cable holes are arranged in the assembling piece body (101) in a penetrating mode; reserved anchor cable holes (107) on corresponding assembling pieces (1) in two adjacent pipe culvert units (1) are arranged in a penetrating way; the pre-stressed anchor cable (2) is arranged in the reserved anchor cable hole (107) in a penetrating mode.
6. the assembly type self-draining pipe culvert according to claim 1, further comprising prefabricated steel arches (3), wherein the prefabricated steel arches (3) are arranged at intervals along the axial direction of the pipe culvert, the prefabricated steel arches (3) are sleeved on the inner side of the pipe culvert unit (1), and the prefabricated steel arches (3) are fixedly connected with the pipe culvert unit (1).
7. The assembled self-draining pipe culvert according to claim 6, wherein the prefabricated steel arch (3) comprises two semicircular arches (31), an arch connecting plate (32) and arch connecting bolts (33), the two semicircular arches (31) are symmetrically arranged at the inner side of the pipe culvert unit (1); two ends of the two semicircular arches (31) are respectively provided with an arch connecting plate (32), and the upper arch connecting plates (32) of the two semicircular arches (31) are fixedly connected through bolts; be provided with assembly plate connecting bolt hole on semi-circular bow member (31), set up on assembly plate (11) and correspond the construction bolt hole, connecting bolt (4) pass assembly plate connecting bolt hole and construction bolt hole in proper order, with assembly plate (11) and semi-circular bow member (31) fixed connection together.
8. The assembled self-draining pipe culvert according to claim 1, wherein the lower ends of the side pieces (112) are provided with connecting bosses (115), the two ends of the bottom plate (12) are respectively provided with connecting grooves (120), and the connecting bosses (115) at the lower ends of the side pieces (112) are matched and connected with the connecting grooves (120) of the bottom plate (12).
9. The fabricated self-draining pipe culvert according to claim 3, wherein the bottom plate (12) comprises bottom plate concrete (121), bottom plate longitudinal reinforcements (122) and bottom plate transverse reinforcements (123), the bottom plate concrete (121) covers the outer sides of the bottom plate longitudinal reinforcements (122) and the bottom plate transverse reinforcements (123), and the bottom plate longitudinal reinforcements (122) and the bottom plate transverse reinforcements (123) are arranged in a criss-cross manner; the lower ends of the transverse reinforcing steel bars (103) of the assembling pieces in the two side pieces extend into the bottom plate concrete (121); the transverse reinforcing steel bar (123) of the bottom plate and the transverse reinforcing steel bar (103) of the assembling piece are fixedly connected together through a reinforcing steel bar connecting sleeve; the bottom plate concrete (121) adopts cast-in-place concrete.
10. The assembling method of the assembled self-draining culvert according to any one of claims 1-9, comprising the steps of:
Step 1, hoisting two side pieces of a first pipe culvert unit, hoisting a top piece of the first pipe culvert unit, and completely clamping the protrusion of the top piece in a groove of the side piece;
Step 2, after the first pipe culvert unit is assembled, starting to hoist the two side plates of the second pipe culvert unit, then hoisting the top plate of the second pipe culvert unit, and during assembly, the drainage channel at the splicing longitudinal seam is smooth;
Step 3, repeating the step 2, and sequentially completing the hoisting of each pipe culvert unit in the middle;
and 4, after hoisting all the pipe culvert units, carrying out bottom plate construction.
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| CN201910936054.1A CN110565550A (en) | 2019-09-29 | 2019-09-29 | Assembly type self-draining pipe culvert and assembly method thereof |
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| CN201910936054.1A CN110565550A (en) | 2019-09-29 | 2019-09-29 | Assembly type self-draining pipe culvert and assembly method thereof |
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