CN110219236B - Prefabricated spliced pier column structure connected through slots and construction method thereof - Google Patents
Prefabricated spliced pier column structure connected through slots and construction method thereof Download PDFInfo
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- CN110219236B CN110219236B CN201910643166.8A CN201910643166A CN110219236B CN 110219236 B CN110219236 B CN 110219236B CN 201910643166 A CN201910643166 A CN 201910643166A CN 110219236 B CN110219236 B CN 110219236B
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 86
- 239000010959 steel Substances 0.000 claims description 86
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 23
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 238000009417 prefabrication Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 8
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 241001669679 Eleotris Species 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 239000004746 geotextile Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 210000003205 muscle Anatomy 0.000 description 3
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- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
Abstract
The invention relates to a prefabricated spliced pier column structure connected in a slot mode, which comprises a supporting table, wherein a groove is formed in the supporting table, a prefabricated spliced pier column is arranged above the groove, a first reinforcing mesh horizontally extends into the groove, a first concrete block adhered with the groove is arranged in the groove, a first connecting mechanism is arranged between the first concrete block and the supporting table, a supporting structure is arranged in the first concrete block and the prefabricated spliced pier column, and a positioning mechanism for positioning the supporting structure is arranged at the bottom of the groove; the invention also relates to a construction method of the prefabricated spliced pier stud structure connected in the slot mode. The invention has reasonable structure and simple and convenient operation, makes the construction and assembly of the lower structure of the bridge realize the industrial production of bridge piers and the direct assembly on site, has the advantages of safe and reliable connection, quick and safe site construction, small traffic interference, guaranteed component quality, economy, environmental protection and the like, and can be suitable for bridge piers in earthquake areas.
Description
Technical Field
The invention relates to a prefabricated spliced pier column structure connected in a slot mode and a construction method thereof.
Background
Along with the popularization of environmental protection and energy conservation consciousness, the requirements of people on the modernization degree of urban bridge construction are higher and higher, and the requirements of rapidness, safety, energy conservation, environmental protection, small traffic interference, good construction quality and the like on the construction of the urban bridge exist from urban residents to bridge design and constructors. The building assembly type construction technology is a key to meet the requirements, the prefabrication assembly technology of the upper structure of the bridge is quite mature, and construction and research staff gradually transfer the eyes to the implementation of the prefabrication assembly technology of the lower structure of the bridge abutment and the like so as to realize full prefabrication of the bridge.
In 1971, the first introduction of segment-spliced piers in texas in the united states was used for the construction of highway bridges across JFK dikes in Corpus Christi, and with the introduction of prefabricated segment-spliced technology, segment-spliced piers began to be applied on a large scale in the united states or europe. For the prefabricated segment assembly construction technology, china is mainly applied to the superstructure construction of bridges, the engineering application of segment assembly concrete piers is less, and the segment assembly entity piers which are connected by wet joints are mainly adopted, so that the prefabricated segment assembly construction technology is only applied to bridges such as east China sea bridge, hangzhou Bay bridge, beijing water pool bridge test engineering, shanghai Yangtze river bridge and the like.
The existing connecting mode of the assembled bridge pier still has a plurality of defects, for example, the bridge pier adopts cast-in-situ joint splicing, the bridge pier main reinforcement bar connecting process is complex, and the connecting quality is not easy to ensure; if the grouting sleeve connection is adopted by the prefabricated assembly structure, the construction tolerance of the sleeve joint is small, the requirement on the construction precision is high, and the method is not suitable for the connection of the assembly structure in the earthquake-resistant area at present. The safety of the bridge substructure is particularly important, so that it is necessary to invent a novel bridge pier seam connection technology to overcome the above drawbacks.
Disclosure of Invention
In view of the above, the invention aims to provide the prefabricated spliced pier stud structure with slot type connection and the construction method thereof, which have the advantages of reasonable structure, simple and convenient operation, safe and reliable connection structure, convenient construction, few in-situ casting procedures, rapid construction and full play of the mechanical property of concrete.
The technical scheme of the invention is as follows: the utility model provides a pier stud structure is assembled in prefabrication that slot type is connected, includes the brace table, is provided with the recess in the brace table, is provided with prefabrication in the recess top and assembles the pier stud, is provided with the first concrete piece that bonds with the recess in the recess, is provided with bearing structure in first concrete piece and prefabrication and assembles the pier stud, is provided with the positioning mechanism that is used for fixing a position bearing structure in the recess bottom, the brace table includes second concrete piece and first reinforcing bar net, prefabrication is assembled the pier stud and is included third concrete piece and second reinforcing bar net, and first reinforcing bar net horizontally extends to in the recess, the second reinforcing bar net comprises along pier stud length direction's atress owner muscle and with atress owner muscle vertically stirrup, atress owner muscle lower extreme downwardly extending to in the recess.
Further, a first connecting mechanism is arranged between the first concrete block and the supporting table, the first connecting mechanism is a U-shaped steel bar, one side of the U-shaped steel bar is embedded into the supporting table, and the other side of the U-shaped steel bar is embedded into the first concrete block.
Further, the supporting structure comprises a supporting steel pipe, welding nails are arranged on the peripheral wall of the supporting steel pipe, concrete columns are poured into the supporting steel pipe, the lower end of the supporting steel pipe is in contact with the positioning mechanism, positioning and supporting are carried out through the positioning mechanism, the supporting steel pipe penetrates through the first concrete block, and the lower end of the prefabricated spliced pier column is embedded.
Further, the positioning mechanism comprises an anchor backing plate, a positioning steel pipe is arranged at the upper end of the anchor backing plate, an anchor reinforcing steel bar is arranged at the lower end of the anchor backing plate, the anchor reinforcing steel bar penetrates through the anchor backing plate from bottom to top, and a fastening nut is arranged at the end part of the anchor reinforcing steel bar.
Further, the first concrete block is a low shrinkage concrete block, and the first concrete block is marked by one level higher than the concrete mark used for the supporting table.
Further, the inner diameter of the positioning steel pipe is larger than the outer diameter of the supporting steel pipe.
Further, the distance between the lower end surface of the stressed main rib and the third concrete block is 20 times larger than the diameter of the steel bar used by the stressed main rib, and the horizontal height of the lower end surface of the stressed main rib is higher than the height of the lower end surface of the supporting steel pipe.
Further, the first reinforcing mesh horizontally extends into the groove, and the first reinforcing mesh and the second reinforcing mesh are intersected.
The invention adopts another technical scheme that the construction method of the slot-type connected prefabricated assembly pier stud structure comprises the following steps of: (1) After hardening the prefabricated field, manufacturing a pedestal for manufacturing and installing the prefabricated assembled pier column on the prefabricated field, reserving a cavity for inserting a support steel pipe of a support structure on the pedestal, reserving an inserting groove for inserting the support steel pipe at the bottom of the pedestal, inserting the support steel pipe welded with the welding nails into the reserved inserting groove, and then installing a bottom die; (2) Binding the stressed main ribs and stirrups of the prefabricated assembled pier stud on a pedestal, adopting a shaping steel template to be matched with the pedestal for the outer side template, reinforcing the template by a pull bolt after the template is accurately positioned, coating a spacer on the template, and fixing the thickness of a reinforcing steel bar protection layer; (3) Checking a template and reinforcing steel bars before concrete pouring, pouring concrete into the template once after the concrete pouring is qualified, forming prefabricated assembled pier columns once, covering the prefabricated assembled pier columns with canvas after the concrete pouring, curing the poured prefabricated assembled pier columns by adopting steam after a certain time, stopping curing when the prefabricated assembled pier columns reach 70% of the design strength, and removing the template to finish prefabrication of the prefabricated assembled pier columns; (4) The prefabricated assembled pier column is transported to the site, a tire-type matched transport vehicle is adopted to transport the prefabricated assembled pier column to the construction site in the transportation process, a rubber pad for damping and preventing friction is paved on a carriage plate, the prefabricated pier column is fixed after being loaded, the fixing condition is checked, the prefabricated pier column can be sent out after meeting the safety transportation requirement, and after being transported to the site, the prefabricated assembled pier column is placed on a flat, firm and well-drained site, and sleeper is used as a supporting pad; (5) Constructing a pile foundation and a supporting table, firstly constructing the pile foundation, then excavating a foundation pit, then constructing a supporting table cushion layer, binding supporting table steel bars, embedding anchor steel bars of a groove bottom positioning mechanism, installing a template, embedding a reinforcing mesh, pouring supporting table concrete, and curing to finish the manufacturing of the supporting table; (6) Fixing an anchor backing plate of the positioning mechanism on an anchor reinforcing steel bar, locking by using a fastening nut, and then roughening the inner surface of the groove; (7) A cavity of 2-4 cm is chiseled out of the lower end of a concrete column in a supporting steel pipe, then two cranes are used for overturning and lifting the prefabricated assembled pier column through a lifting and delivering method, the cranes slowly transfer a supporting mechanism at the lower end of the pier column to the top of a supporting table, mortar is pre-poured into a pre-embedded positioning steel pipe, a supporting structure at the lower end of the prefabricated assembled pier column is slowly inserted into the pre-embedded positioning steel pipe, the lower end of the supporting structure extrudes the mortar, and the cavity in the supporting steel pipe is filled with the mortar; (8) Binding and connecting steel bars between the first steel bar mesh and the second steel bar mesh; (9) The periphery of the prefabricated assembly pier column is fixed by adopting diagonal braces, four feet of the diagonal braces are supported by screw jacks, a crane can be used for completely placing hooks after the temporary fixing, a theodolite or a total station is used for detecting the perpendicularity of the prefabricated assembly pier column, if larger deviation exists, a force is applied to a pier body by the jack of the diagonal braces, the perpendicularity of the prefabricated assembly pier column is adjusted to confirm that the position and perpendicularity of the prefabricated assembly pier column are correct, the prefabricated assembly pier column is fixed, shrinkage concrete is poured into a groove of a supporting table to form a first concrete block, after the groove pouring is completed, water is sprayed in time for maintenance, a geotextile wrapping plastic film is adopted for maintenance, the surface of the concrete is kept moist, and the temporary support can be removed when the cast-in-situ compensation shrinkage concrete strength reaches 90%.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure, simple and convenient operation, safe and reliable connecting structure, convenient construction and few in-situ casting procedures, can realize quick construction and can fully exert the mechanical property of concrete.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a left side view of an embodiment of the present invention;
FIG. 3 is a schematic illustration of the connection of a support structure to a prefabricated assembled pier column in accordance with an embodiment of the present invention;
FIG. 4 is a left side view of FIG. 3 in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the connection between a support structure and a support table according to an embodiment of the present invention;
FIG. 6 is a top view of FIG. 5 according to an embodiment of the present invention;
FIG. 7 is a schematic view illustrating the installation of a first connecting mechanism according to an embodiment of the present invention;
FIG. 8 is a top view of FIG. 7 in accordance with an embodiment of the present invention;
fig. 9 is a schematic structural view of an embodiment of the invention when the reinforcing mesh is not bound;
fig. 10 is a schematic structural view of the reinforcing mesh according to the embodiment of the present invention when bound;
FIG. 11 is a schematic diagram illustrating the installation of a positioning mechanism according to an embodiment of the present invention;
in the figure: 100-supporting table; 110-grooves; 120-a second concrete block; 130-a first reinforcing mesh; 200-a first concrete block; 300-prefabricating and assembling pier studs; 310-a third concrete block; 320-a second reinforcing mesh; 321-stressed main ribs; 322-stirrups; 400-a first connection mechanism; 500-supporting structure; 510-supporting the steel pipe; 520-welding nails; 530-concrete columns; 600-positioning mechanism; 610-anchor pad; 620-positioning the steel pipe; 630-anchoring the steel bar; 640-tightening the nut; 700-connecting steel bars.
Detailed Description
As shown in fig. 1 to 11, a prefabricated assembly pier stud 300 structure with slot connection comprises a supporting table 100, a groove 110 is arranged in the supporting table 100, a prefabricated assembly pier stud 300 is arranged above the groove 110, a first concrete block 200 bonded with the groove 110 is arranged in the groove 110, a first connecting mechanism 400 is arranged between the first concrete block 200 and the supporting table 100, a supporting structure 500 is arranged in the first concrete block 200 and the prefabricated assembly pier stud 300, a positioning mechanism 600 for positioning the supporting structure 500 is arranged at the bottom of the groove 110, the supporting table 100 comprises a second concrete block 120 and a first reinforcing steel mesh 130, the prefabricated assembly pier stud 300 comprises a third concrete block 310 and a second reinforcing steel mesh 320, the first reinforcing steel mesh 130 horizontally extends into the groove 110, the second reinforcing steel mesh 320 is composed of a stressed main rib 321 along the length direction of the prefabricated assembly pier stud 300 and a stirrup 322 perpendicular to the stressed main rib 321, and the lower end of the stressed main rib 321 extends downwards into the groove 110. In use, the first concrete block 200 is further connected to the support base 100 via the first connecting mechanism 400, and the first concrete block 200 is further connected to the prefabricated pier stud 300 via the support structure 500. The stressed main bars 321 of the second reinforcing mesh 320 extend downwards into the grooves 110, so that the second reinforcing mesh is convenient to connect with the first reinforcing mesh 130, and the connection strength between the support table 100 and the prefabricated assembly pier stud 300 is enhanced.
In this embodiment, the first connecting mechanism 400 is a U-shaped steel bar, one side of the U-shaped steel bar is embedded in the supporting table 100, and the other side of the U-shaped steel bar is embedded in the first concrete block 200. One end of the U-shaped steel bar is arranged in the supporting table 100, and the other end of the U-shaped steel bar is embedded in the first concrete block 200, so that the first concrete block 200 and the supporting table 100 are connected into a whole.
In this embodiment, the supporting structure 500 includes a supporting steel pipe 510, a welding nail 520 is disposed on the outer peripheral wall of the supporting steel pipe 510, a concrete column 530 is poured into the supporting steel pipe 510, the lower end of the supporting steel pipe 510 contacts with the positioning mechanism 600, positioning and supporting are performed by the positioning mechanism 600, and the supporting steel pipe 510 penetrates through the first concrete block 200 and is embedded into the lower end of the prefabricated assembly pier 300. The strength of the connection of the first concrete block 200 to the prefabricated assembled pier stud 300 is reinforced by the support steel pipes 510 and the welding nails 520.
In this embodiment, the positioning mechanism 600 includes an anchor backing plate 610, a positioning steel pipe 620 is disposed at an upper end of the anchor backing plate 610, an anchor reinforcement 630 is disposed at a lower end of the anchor backing plate 610, the anchor reinforcement 630 passes through the anchor backing plate 610 from bottom to top, and a fastening nut 640 is disposed at an end of the anchor reinforcement 630. Positioning can be performed by positioning the steel pipes 620 when the prefabricated assembled pier stud 300 is hoisted, so that the support steel pipes 510 of the support structure 500 are matched with the positioning steel pipes 620 to perform positioning.
In this embodiment, the first concrete block 200 is a low shrinkage first concrete block 200, and the first concrete block 200 is numbered one level higher than the concrete used for the support stand 100.
In this embodiment, the inner diameter of the positioning steel pipe 620 is larger than the outer diameter of the supporting steel pipe 510.
In this embodiment, a horizontal reinforcing mesh 700 is provided at the upper portion of the support base 100, and is intersected with the longitudinal reinforcing bars extending from the lower end of the prefabricated pier stud 300.
In this embodiment, the distance between the lower end surface of the main reinforcement 321 and the third concrete block 310 is greater than 20 times the diameter of the steel bar used for the main reinforcement 321, and the horizontal height of the lower end surface of the main reinforcement 321 is higher than the height of the lower end surface of the support steel pipe 510.
In this embodiment, the first reinforcing mesh 130 extends horizontally into the groove 110, and the first reinforcing mesh 130 and the second reinforcing mesh 320 cross each other to penetrate into respective seams. The first reinforcing mesh 130 and the second reinforcing mesh 320 can be connected by binding some connecting reinforcing bars 700, and concrete can be directly poured into the groove 110.
The construction method of the prefabricated spliced pier column structure connected in a slot mode comprises the following steps of: (1) After hardening the prefabricated site, manufacturing a pedestal for manufacturing and installing the prefabricated assembled pier stud 300 on the prefabricated site, reserving a cavity for inserting the support steel tube 510 of the support structure 500 on the pedestal, reserving an inserting groove for inserting the support steel tube 510 at the bottom of the pedestal, inserting the support steel tube 510 welded with the welding nails 520 into the reserved inserting groove, and then installing the bottom die; (2) Binding a stressed main rib 321 and a stirrup 322 of the prefabricated assembly pier stud 300 on a pedestal, adopting a shaping steel template to be matched with the pedestal for an outer side template, reinforcing the template through a split bolt after the template is accurately positioned, coating a spacer on the template, and fixing the thickness of a reinforcement protection layer; (3) Checking a template and reinforcing steel bars before concrete pouring, pouring concrete into the template once after the concrete pouring is qualified, forming the prefabricated assembled pier column 300 once, covering the prefabricated assembled pier column 300 with canvas after the concrete pouring, curing the poured prefabricated assembled pier column 300 by adopting steam after a certain time, stopping curing when the prefabricated assembled pier column 300 reaches 70% of the design strength, and removing the template to finish prefabrication of the prefabricated assembled pier column 300; (4) The prefabricated assembled pier column 300 is transported to the site, a tire type matched transport vehicle is adopted to transport the prefabricated assembled pier column 300 to the construction site in the transportation process, a rubber pad for damping and preventing friction is paved on a carriage plate, the prefabricated pier column is fixed after being loaded, the fixing condition is checked, the prefabricated assembled pier column 300 can be sent out after meeting the safety transportation requirement, and after being transported to the site, the prefabricated assembled pier column 300 is placed on a flat, firm and well-drained site and a sleeper is used as a supporting pad; (5) Constructing a pile foundation and a supporting table 100, firstly constructing the pile foundation, then excavating a foundation pit, then constructing a cushion layer of the supporting table 100, binding reinforcing steel bars of the supporting table 100, embedding anchor reinforcing steel bars 630 of a positioning mechanism 600 at the bottom of a groove 110, installing a template, embedding a reinforcing steel bar net 700, pouring concrete of the supporting table 100 and curing to finish the manufacturing of the supporting table 100; (6) The anchor pad 610 of the positioning mechanism 600 is fixed to the anchor bar 630 and is locked by the fastening nut 640, and then the inner surface of the groove 110 is roughened; (7) A cavity of 2-4 cm is chiseled out of the lower end of a concrete column 230 in a support steel pipe 510, then a prefabricated assembled pier column 300 is turned over and lifted by adopting two cranes through a lifting and delivering method, a support mechanism at the lower end of the pier column is slowly transferred to the top of a support table 100 by the cranes, mortar is pre-poured into a pre-embedded positioning steel pipe 620, a support structure 500 at the lower end of the prefabricated assembled pier column 300 is slowly inserted into the pre-embedded positioning steel pipe 620, the mortar is extruded at the lower end of the support structure 500, and the cavity in the support steel pipe 510 is filled with the mortar; (8) Binding and connecting steel bars between the first steel bar mesh and the second steel bar mesh; (9) The periphery of the prefabricated assembly pier column 300 is fixed by adopting diagonal braces, four diagonal braces are supported by screw jacks, a crane can be used for completely placing hooks after temporary fixing, a theodolite or a total station is used for detecting the verticality of the prefabricated assembly pier column 300, if larger deviation exists, a force is applied to a pier body by the jacks of the diagonal braces, the verticality of the prefabricated assembly pier column 300 is adjusted to confirm that the position and the verticality of the prefabricated assembly pier column 300 are correct, the prefabricated assembly pier column 300 is fixed, shrinkage concrete is poured into a groove 110 of a supporting table 100, a first concrete block 200 is formed, after the groove 110 is poured, water is sprayed in time for maintenance, a geotextile wrapping plastic film is used for maintenance outside, the surface of the concrete is kept moist, and the temporary support can be removed when the strength of the cast-in-situ compensation shrinkage concrete reaches 90%.
The above operation procedures and software and hardware configurations are only preferred embodiments of the present invention, and are not limited to the scope of the present invention, and all equivalent changes made by the descriptions and the drawings of the present invention, or direct or indirect application in the related technical field, are equally included in the scope of the present invention.
Claims (6)
1. The utility model provides a pier stud structure is assembled in prefabrication that slot type is connected which characterized in that: the support platform comprises a support platform, a groove is formed in the support platform, a prefabricated assembly pier column is arranged above the groove, a first concrete block bonded with the groove is arranged in the groove, a support structure is arranged in the first concrete block and the prefabricated assembly pier column, a positioning mechanism for positioning the support structure is arranged at the bottom of the groove, the support platform comprises a second concrete block and a first reinforcing mesh, the prefabricated assembly pier column comprises a third concrete block and a second reinforcing mesh, the first reinforcing mesh horizontally extends into the groove, the second reinforcing mesh consists of a stressed main rib along the length direction of the pier column and a stirrup perpendicular to the stressed main rib, and the lower end of the stressed main rib downwardly extends into the groove;
the support structure comprises a support steel pipe, welding nails are arranged on the peripheral wall of the support steel pipe, concrete columns are poured into the support steel pipe, the lower end of the support steel pipe is in contact with the positioning mechanism, positioning and supporting are carried out through the positioning mechanism, and the support steel pipe penetrates through the first concrete block and is embedded into the lower end of the prefabricated assembled pier column;
the positioning mechanism comprises an anchor backing plate, a positioning steel pipe is arranged at the upper end of the anchor backing plate, an anchor reinforcing steel bar is arranged at the lower end of the anchor backing plate, the anchor reinforcing steel bar penetrates through the anchor backing plate from bottom to top, and a fastening nut is arranged at the end part of the anchor reinforcing steel bar;
the first concrete block is a low shrinkage concrete block, the first concrete block is numbered one level higher than the concrete used for the support table.
2. The socket-connected prefabricated assembled pier stud structure of claim 1, wherein: a first connecting mechanism is arranged between the first concrete block and the supporting table, the first connecting mechanism is a U-shaped steel bar, one side of the U-shaped steel bar is embedded into the supporting table, and the other side of the U-shaped steel bar is embedded into the first concrete block.
3. The socket-connected prefabricated assembled pier stud structure of claim 1, wherein: the inner diameter of the positioning steel pipe is larger than the outer diameter of the supporting steel pipe.
4. The socket-connected prefabricated assembled pier stud structure of claim 3, wherein: the distance between the lower end surface of the stressed main rib and the third concrete block is 20 times larger than the diameter of the steel bar used by the stressed main rib, and the horizontal height of the lower end surface of the stressed main rib is higher than the height of the lower end surface of the supporting steel pipe.
5. The socket-type connected prefabricated assembled pier stud structure according to claim 4, wherein: the first reinforcing steel bar net horizontally extends into the groove, and the first reinforcing steel bar net and the second reinforcing steel bar net are mutually intersected.
6. A construction method of a prefabricated spliced pier stud structure connected in a slot manner, comprising the prefabricated spliced pier stud structure connected in a slot manner as claimed in claim 5, and characterized in that: (1) After hardening the prefabricated field, manufacturing a pedestal for manufacturing and installing the prefabricated assembled pier column on the prefabricated field, reserving a cavity for inserting a support steel pipe of a support structure on the pedestal, reserving an inserting groove for inserting the support steel pipe at the bottom of the pedestal, inserting the support steel pipe welded with the welding nails into the reserved inserting groove, and then installing a bottom die; (2) Binding the stressed main ribs and stirrups of the prefabricated assembled pier stud on a pedestal, adopting a shaping steel template to be matched with the pedestal for the outer side template, reinforcing the template by a pull bolt after the template is accurately positioned, coating a spacer on the template, and fixing the thickness of a reinforcing steel bar protection layer; (3) Checking a template and reinforcing steel bars before concrete pouring, pouring concrete into the template once after the concrete pouring is qualified, forming prefabricated assembled pier columns once, covering the prefabricated assembled pier columns with canvas after the concrete pouring, curing the poured prefabricated assembled pier columns by adopting steam after a certain time, stopping curing when the prefabricated assembled pier columns reach 70% of the design strength, and removing the template to finish prefabrication of the prefabricated assembled pier columns; (4) The prefabricated assembled pier column is transported to the site, a tire-type matched transport vehicle is adopted to transport the prefabricated assembled pier column to the construction site in the transportation process, a rubber pad for damping and preventing friction is paved on a carriage plate, the prefabricated pier column is fixed after being loaded, the fixing condition is checked, the prefabricated pier column can be sent out after meeting the safety transportation requirement, and after being transported to the site, the prefabricated assembled pier column is placed on a flat, firm and well-drained site, and sleeper is used as a supporting pad; (5) Constructing a pile foundation and a supporting table, firstly constructing the pile foundation, then excavating a foundation pit, then constructing a supporting table cushion layer, binding supporting table steel bars, embedding anchor steel bars of a groove bottom positioning mechanism, installing a template, embedding a reinforcing mesh, pouring supporting table concrete, and curing to finish the manufacturing of the supporting table; (6) Fixing an anchor backing plate of the positioning mechanism on an anchor reinforcing steel bar, locking by using a fastening nut, and then roughening the inner surface of the groove; (7) A cavity of 2-4 cm is chiseled out of the lower end of a concrete column in a supporting steel pipe, then two cranes are used for overturning and lifting the prefabricated assembled pier column through a lifting and delivering method, the cranes slowly transfer a supporting mechanism at the lower end of the pier column to the top of a supporting table, mortar is pre-poured into a pre-embedded positioning steel pipe, a supporting structure at the lower end of the prefabricated assembled pier column is slowly inserted into the pre-embedded positioning steel pipe, the lower end of the supporting structure extrudes the mortar, and the cavity in the supporting steel pipe is filled with the mortar; (8) Binding and connecting steel bars between the first steel bar mesh and the second steel bar mesh; (9) The periphery of the prefabricated assembly pier column is fixed by adopting diagonal braces, four feet of the diagonal braces are supported by screw jacks, a crane can be used for completely placing hooks after the temporary fixing, a theodolite or a total station is used for detecting the perpendicularity of the prefabricated assembly pier column, if larger deviation exists, a force is applied to a pier body by the jack of the diagonal braces, the perpendicularity of the prefabricated assembly pier column is adjusted to confirm that the position and perpendicularity of the prefabricated assembly pier column are correct, the prefabricated assembly pier column is fixed, shrinkage concrete is poured into a groove of a supporting table to form a first concrete block, after the groove pouring is completed, water is sprayed in time for maintenance, a geotextile wrapping plastic film is adopted for maintenance, the surface of the concrete is kept moist, and the temporary support can be removed when the cast-in-situ compensation shrinkage concrete strength reaches 90%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113106843A (en) * | 2020-01-10 | 2021-07-13 | 中国国家铁路集团有限公司 | Combined embedded connection structure between prefabricated pier stud and base and construction method |
| CN113123214A (en) * | 2020-01-10 | 2021-07-16 | 中国国家铁路集团有限公司 | Large-beam and high-upright-column prefabricated assembled frame pier and construction method |
| CN113202013A (en) * | 2020-03-14 | 2021-08-03 | 中国铁路设计集团有限公司 | Splicing structure between prefabricated top cap and pier stud and construction method |
| CN112681117B (en) * | 2020-12-24 | 2023-04-21 | 中国二十冶集团有限公司 | Connecting device and construction method for connecting position of bridge pier column and bearing platform |
| CN113323033A (en) * | 2021-05-13 | 2021-08-31 | 中国建筑第八工程局有限公司 | Multifunctional measurement and control pile with stable structure and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758031A (en) * | 2014-01-26 | 2014-04-30 | 招商局重庆交通科研设计院有限公司 | Method for manufacturing assembled type bridge pier by utilizing steel fiber reinforced self-compacting concrete |
| CN106381804A (en) * | 2016-09-06 | 2017-02-08 | 上海应用技术大学 | Precast assembled bridge pier manufactured from U-shaped reinforcing steel bars, and connection process of precast assembled bridge pier |
| CN108149585A (en) * | 2018-01-31 | 2018-06-12 | 福建工程学院 | A kind of splicing construction and joining method of the pier stud segment of precast assembly bridge pier |
| CN109837831A (en) * | 2019-03-29 | 2019-06-04 | 上海应用技术大学 | A kind of centrifugation prefabricated assembled concrete bridge pier and construction method |
| CN210482022U (en) * | 2019-07-17 | 2020-05-08 | 福州大学 | Prefabricated pier stud structure of assembling of slot-in type connection |
-
2019
- 2019-07-17 CN CN201910643166.8A patent/CN110219236B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758031A (en) * | 2014-01-26 | 2014-04-30 | 招商局重庆交通科研设计院有限公司 | Method for manufacturing assembled type bridge pier by utilizing steel fiber reinforced self-compacting concrete |
| CN106381804A (en) * | 2016-09-06 | 2017-02-08 | 上海应用技术大学 | Precast assembled bridge pier manufactured from U-shaped reinforcing steel bars, and connection process of precast assembled bridge pier |
| CN108149585A (en) * | 2018-01-31 | 2018-06-12 | 福建工程学院 | A kind of splicing construction and joining method of the pier stud segment of precast assembly bridge pier |
| CN109837831A (en) * | 2019-03-29 | 2019-06-04 | 上海应用技术大学 | A kind of centrifugation prefabricated assembled concrete bridge pier and construction method |
| CN210482022U (en) * | 2019-07-17 | 2020-05-08 | 福州大学 | Prefabricated pier stud structure of assembling of slot-in type connection |
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