CN115233559A - Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars - Google Patents
Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars Download PDFInfo
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- CN115233559A CN115233559A CN202210954953.6A CN202210954953A CN115233559A CN 115233559 A CN115233559 A CN 115233559A CN 202210954953 A CN202210954953 A CN 202210954953A CN 115233559 A CN115233559 A CN 115233559A
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- pier stud
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- prefabricated
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- corrugated pipe
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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
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
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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
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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
- E01D21/10—Cantilevered erection
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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
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The invention relates to the technical field of urban rail transit such as subway systems, urban area fast rail systems, light rail systems, medium-low speed magnetic levitation traffic systems, straddle type monorail systems and the like, in particular to a method for connecting prefabricated vase piers through bonding prestressed tendons and reinforcing steel bars, which comprises the following steps: the prefabricated pier stud that prefabricated tubular pile, cushion cap and two at least pier stud segmentss concatenation that set gradually formed, the prestressing force steel strand runs through prefabricated pier stud and anchor inside the cushion cap, and the prestressing force steel strand is formed with bonding structure through grout material and between prefabricated pier stud and the cushion cap. Prefabricated tubular piles and prefabricated pier columns are prefabricated in a prefabricated yard, the time of on-site construction is shortened, the influence on existing road traffic is reduced, and the construction efficiency is improved; vertical prestress is formed through the prestress steel strands, and the durability of the joint is improved; the grouting material enables a bonding structure to be formed among the prestressed steel strands, the prefabricated pier stud and the bearing platform, and the prestressed steel strands are well protected.
Description
Technical Field
The invention relates to the technical field of rail transit construction, in particular to a method for connecting prefabricated vase piers through bonded prestressed tendons and reinforcing steel bars.
Background
The track traffic overhead line is generally laid along the road or the roadside of existing road, and the substructure construction adopts traditional cast-in-place construction method more, needs to occupy the road for a long time, influences the traffic, and its disadvantage is more, mainly includes:
(1) a large number of supports and templates need to be erected on site, so that potential safety hazards are high, and safety risks are high;
(2) the field operation requires a large amount of labor force;
(3) the construction efficiency is low, and the construction period is long;
(4) the influence on the existing road traffic is large, and the social influence is large;
(5) the generated dust, slurry, noise, light and other environmental pollution are serious and the like.
The urban viaduct construction, especially in busy traffic areas, requires the influence of construction on traffic to be minimized, and the development of modern cities has higher requirements on the construction of the rail transit viaduct. Therefore, there is a need for a structure and method for connecting prefabricated vase piers by means of bonded tendons and reinforcing bars that at least partially solves the problems of the prior art.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, the present invention provides a structure for connecting prefabricated vase piers by means of bonded tendons and reinforcing bars, comprising: prefabricated pier stud that prefabricated tubular pile, cushion cap and two at least pier stud segments concatenation that set gradually formed, the prestressing force steel strand run through prefabricated pier stud and anchor are in inside the cushion cap, prestressing force steel strand through grouting material with be formed with adhesive structure between prefabricated pier stud and the cushion cap.
Preferably, the prefabricated pier stud comprises: the first pier column section is arranged above the bearing platform, the second pier column section is arranged above the first pier column section, and a shear key structure is arranged on the joint surface of the first pier column section and the second pier column section.
Preferably, the bearing platform is internally pre-buried with a first reinforcing bar, the bottom of the first pier stud section is pre-buried with a first grouting sleeve which is coaxially arranged with the first reinforcing bar, the top end of the first reinforcing bar extends out of the top surface of the bearing platform and is inserted into the first grouting sleeve, the first pier stud section is pre-buried with a second reinforcing bar which is coaxially arranged with the first grouting sleeve, the top end of the second reinforcing bar extends out of the top of the first pier stud section, the bottom end of the second reinforcing bar extends into the first grouting sleeve, and the first reinforcing bar and the second reinforcing bar are connected through grouting material in the first grouting sleeve.
Preferably, a second grouting sleeve which is coaxially arranged with the second steel bar is embedded in the bottom of the second pier stud section, the top end of the second steel bar is inserted into the second grouting sleeve, a third steel bar which is coaxially arranged with the second grouting sleeve is embedded in the second pier stud section, the bottom end of the third steel bar extends into the second grouting sleeve, and the second steel bar and the third steel bar are connected through grouting material in the second grouting sleeve.
Preferably, an anchoring end and a first corrugated pipe coaxially arranged with the anchoring end are pre-embedded in the bearing platform, the top end of the first corrugated pipe penetrates through and protrudes out of the top surface of the bearing platform, a second corrugated pipe coaxially arranged with the first corrugated pipe is pre-embedded in the first pier column section, the second corrugated pipe penetrates through the first pier column section, a third corrugated pipe coaxially arranged with the second corrugated pipe is pre-embedded in the second pier column section, the third corrugated pipe penetrates through the second pier column section, the bottom end of the prestressed steel strand sequentially penetrates through the third corrugated pipe, the second corrugated pipe and the first corrugated pipe and extends to be fixed with the anchoring end, the top end of the prestressed steel strand is fixed on the second pier column section through an anchor sealing block, and grouting materials used for forming a bonding structure are arranged in the third corrugated pipe, the second corrugated pipe and the first corrugated pipe.
Preferably, the top surface of cushion cap is equipped with and is used for adjusting the regulation cushion of first pier stud segment elevation and is used for connecting the mortar bed course of first pier stud segment.
Preferably, the shear key structure includes: the first shear key is arranged on the top surface of the first pier column section, the second shear key is arranged on the bottom surface of the second pier column section, and an epoxy adhesive is arranged at the joint of the first shear key and the second shear key.
The invention also provides a method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars, which comprises the following steps:
step 1, prefabricating a precast tubular pile and a pier column segment;
step 6, penetrating a prestressed steel strand downwards from the top of the second pier stud segment, so that the bottom end of the prestressed steel strand sequentially penetrates through the third corrugated pipe, the second corrugated pipe and the first corrugated pipe, and the bottom end of the prestressed steel strand is anchored with an anchoring end pre-embedded in the bearing platform;
and 7, tensioning the prestressed steel strands, then pressing and injecting grouting materials from bottom to top through grouting pipes pre-embedded in the bearing platform, forming a bonding structure by the prestressed steel strands, the bearing platform, the first pier stud segment and the second pier stud segment, and then arranging an anchor block at the top end of the second pier stud segment.
Preferably, when the pier stud sections are assembled, the side surfaces of the pier stud sections are limited through the auxiliary positioning mechanism;
the auxiliary positioning mechanism comprises: frame type platform, the fixed elevating system that is equipped with in below of frame type platform, the top activity of frame type platform is equipped with four at least supporting components who evenly arranges, supporting component is used for supporting the side of assembling the pier stud subsection of in-process to effort to between pier stud subsection and the supporting component carries out real-time detection, carries out analysis and judgement to the effort of a plurality of directions through the control end, if satisfy the requirement of assembling to the analysis result of effort, then need not to adjust the position of assembling of pier stud subsection, if unsatisfied the requirement of assembling to the analysis result of effort, then real-time adjustment pier stud subsection assemble the position.
Preferably, the support assembly comprises: a telescopic rod fixedly arranged on the frame-shaped platform, wherein a toothed plate is fixedly arranged at one end of the telescopic rod, a sliding groove is arranged on the toothed plate, a sliding block in sliding connection with the sliding groove is arranged on the frame-shaped platform, a gear in meshing connection with the toothed plate is arranged on the frame-shaped platform in a rotating mode through a gear shaft, a first support rod is fixedly arranged on the gear, a limiting ring is fixedly arranged on the first support rod, a movable sleeve in sliding connection with the first support rod is arranged on one side, away from the gear, of the limiting ring, a first spring is connected between the movable sleeve and the limiting ring, first connecting rods are symmetrically arranged on the outer sides of the movable sleeves, and one ends, away from the movable sleeve, of the first connecting rods are rotatably connected with second support rods, a connecting cylinder is arranged at one end of the second supporting rod, which is far away from the first connecting rod, a third supporting rod is connected in the connecting cylinder through a second spring, the end part of the third supporting rod, which extends out of the connecting cylinder, is rotatably connected with a second connecting rod, a butting wheel is arranged on a rotating connecting shaft of the third supporting rod and the second connecting rod, a fourth supporting rod is arranged inside one end of the first supporting rod, which is far away from the gear, in a sliding manner, a third connecting rod is arranged at the end part of the fourth supporting rod, which extends out of the first supporting rod, two ends of the third connecting rod are respectively rotatably connected with the end parts of the two second connecting rods, and a third spring is arranged between the bottom end of the first supporting rod and the third connecting rod;
the first support rod is provided with a plurality of limiting columns, the limiting columns are circumferentially arranged by taking the axis of the gear as the circle center, an arc-shaped limiting groove body is fixedly arranged on the frame-shaped platform, and the limiting columns are slidably arranged in the arc-shaped limiting groove body;
and a pressure sensor for detecting acting force is arranged on the surface of the third connecting rod connected with the third spring, and the pressure sensor is connected with the control end.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars greatly reduces the time of on-site construction, reduces the influence on existing road traffic, shortens the construction period and improves the construction efficiency by prefabricating the prefabricated pipe pile and the prefabricated pier column in a prefabricated yard; after the pier stud is spliced, vertical prestress is formed through the prestress steel strands, and the durability of the joint is improved; by adopting the grouting material, a bonding structure is formed among the tensioned prestressed steel strands, the prefabricated pier column and the bearing platform, so that the prestressed steel strands can be well protected, and the durability of the prestressed steel strands is improved.
Other advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a prefabricated vase pier connected by a bonded prestressed rib and a steel bar according to the present invention;
FIG. 2 is a schematic structural view of a first steel bar in a bearing platform in the method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars according to the invention;
fig. 3 is a schematic structural view of a second steel bar and a first grouting sleeve in a first pier stud segment in the method for connecting prefabricated vase piers by using a bonding prestressed bar and the steel bar according to the present invention;
FIG. 4 is a schematic structural view of a third steel bar and a second grouting sleeve in a second pier stud segment in the method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars according to the present invention;
FIG. 5 is a schematic structural diagram of a first corrugated pipe and an anchoring end in a bearing platform in the method for connecting the prefabricated vase pier through the bonded prestressed tendons and the reinforcing steel bars;
FIG. 6 is a schematic structural view of a second corrugated pipe in a first pier stud segment in the method for connecting prefabricated vase piers by using bonding pre-stressed tendons and reinforcing steel bars according to the present invention;
FIG. 7 is a schematic structural view of a third bellows in a third pier stud segment in the method for connecting the prefabricated vase pier through the bonded pre-stressed tendons and the reinforcing steel bars according to the invention;
FIG. 8 is a schematic diagram showing a distribution structure of a second shear key in the method for connecting the prefabricated vase pier by the adhesive pre-stressed tendons and the reinforcing steel bars according to the present invention;
FIG. 9 is a schematic structural view of an auxiliary positioning mechanism in the method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars according to the invention;
FIG. 10 is a schematic top view of the auxiliary positioning mechanism in the method of connecting the prefabricated vase pier through the bonded pre-stressed tendons and the steel bars according to the present invention;
FIG. 11 is a schematic top view of a frame-shaped platform separated into two units according to the method for connecting prefabricated vase piers by means of bonded pre-stressed tendons and reinforcing steel bars according to the present invention;
FIG. 12 is a schematic structural view of a support assembly in the method for connecting prefabricated vase piers by means of bonded tendons and reinforcing steel bars according to the present invention;
fig. 13 is an enlarged structural view of a portion a in fig. 12 in a method for connecting prefabricated vase piers by means of bonded pre-stressed tendons and reinforcing steel bars according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 13, the present invention provides a structure for connecting prefabricated vase piers by means of bonded tendons and reinforcing bars, comprising: prefabricated pier stud 3 that prefabricated tubular pile 1, cushion cap 2 and two at least pier stud segments concatenation that set gradually formed, prestressing force steel strand wires 4 run through prefabricated pier stud 3 and anchor are in inside the cushion cap 2, prestressing force steel strand wires 4 through grout material 5 with be formed with adhesive structure between prefabricated pier stud 3 and the cushion cap 2.
The working principle of the technical scheme is as follows: the shape of the prefabricated pier stud 3 is not limited, the prefabricated pile 1 and the prefabricated pier stud 3 are prefabricated in a prefabricated field and then are transported to a construction site for assembly, and a building block type construction mode is achieved, wherein the prefabricated pier stud 3 can be disassembled into a plurality of pier stud sections to be prefabricated respectively, then the prefabricated pier stud sections are assembled in the construction site, the number of the pier stud sections of the prefabricated pier stud 3 is not limited, the prefabricated pier stud sections can be designed according to actual needs, the bearing platform 2 is formed by cast-in-place columns in the construction site, after the prefabricated pile 1, the bearing platform 2 and the prefabricated pier stud 3 are constructed sequentially from bottom to top, the prestressed steel strand 4 penetrates from top to bottom, the prestressed steel strand 4 is a self-locking steel strand, the bottom end of the prestressed steel strand 4 is inserted into the bearing platform 2 and is automatically fixed in the bearing platform 2, then the prestressed steel strand 4 is tensioned from top to form prestress, and then grouting material 5 is injected into a space area formed between the prestressed steel strand 4 and the prefabricated pier stud 3 and the bearing platform 2, and a bonding structure is formed between the prestressed steel strand 4 and the prefabricated pier stud 3 and the bearing platform 2.
The beneficial effects of the above technical scheme are that: through the design of the structure, the prefabricated tubular pile 1 and the prefabricated pier stud 3 are prefabricated in the prefabricated yard, so that the time of on-site construction is greatly reduced, the influence on existing road traffic is reduced, the construction period is shortened, and the construction efficiency is improved; after the pier stud is spliced, vertical prestress is formed through the prestress steel strands 4, so that the durability of the joint is improved; by adopting the grouting material 5, a bonding structure is formed among the tensioned prestressed steel strand 4, the prefabricated pier stud 3 and the bearing platform 2, the prestressed steel strand 4 can be well protected, and the durability of the prestressed steel strand 4 is improved.
In one embodiment, the prefabricated pier stud 3 comprises: the first pier column segment 310 is arranged above the bearing platform 2, the second pier column segment 320 is arranged above the first pier column segment 310, and the shear key structure 6 is arranged on the joint surfaces of the first pier column segment 310 and the second pier column segment 320.
The working principle and the beneficial effects of the technical scheme are as follows: the prefabricated pier stud 3 is split into a plurality of pier stud sections, so that the transportation and the field assembly are convenient, the volume of a single pier stud section is reduced, and the safety in lifting the pier stud section is ensured; in this embodiment, a prefabricated pier stud 3 formed by assembling two pier stud segments is taken as an example for description, the first pier stud segment 310 is assembled with the bearing platform 2, the second pier stud segment 320 is assembled above the first pier stud segment 310, the prefabricated pier stud 3 formed by assembling the first pier stud segment 310 and the second pier stud segment 320 forms a vase structure, and the bottom surface of the second pier stud segment 320 is connected with the top surface of the first pier stud segment 320 through the shear key structure 6, so as to ensure the connection tightness of the two, prevent the two from being misaligned, and increase the stress strength of the two.
In one embodiment, a first steel bar 210 is embedded in the bearing platform 2, a first grouting sleeve 311 which is coaxially arranged with the first steel bar 210 is embedded in the bottom of the first pier stud section 310, the top end of the first steel bar 210 extends out of the top surface of the bearing platform 2 and is inserted into the first grouting sleeve 311, a second steel bar 312 which is coaxially arranged with the first grouting sleeve 311 is embedded in the first pier stud section 310, the top end of the second steel bar 312 extends out of the top of the first pier stud section 310, the bottom end of the second steel bar 312 extends into the first grouting sleeve 311, and the first grouting sleeve 311 is internally provided with grout 5 to connect the first steel bar 210 and the second steel bar 312.
The working principle and the beneficial effects of the technical scheme are as follows: pouring and molding the bearing platform 2 above the precast tubular pile 1 on a construction site, determining the pre-embedded position of the first steel bar 210 according to the arrangement position of the first grouting sleeve 311 pre-embedded in the first pier column section 310, after the first pier column section 310 is assembled on the bearing platform 2, enabling the top end of the first steel bar 210 and the bottom end of the second steel bar 312 to be in the first grouting sleeve 311, injecting grouting material 5 into the first grouting sleeve 311, and connecting the first steel bar 210 and the second steel bar 312 together to complete assembly;
because first reinforcing bar 210, second reinforcing bar 312 and first grout sleeve 311 all set up and be a plurality ofly coaxially, can be so that the structure atress uniformity after cushion cap 2 and first pier stud section 310 are assembled is better.
In one embodiment, a second grouting sleeve 321 coaxially disposed with the second reinforcing steel bar 312 is embedded in the bottom of the second pier stud section 320, the top end of the second reinforcing steel bar 312 is inserted into the second grouting sleeve 321, a third reinforcing steel bar 322 coaxially disposed with the second grouting sleeve 321 is embedded in the second pier stud section 320, the bottom end of the third reinforcing steel bar 322 extends into the second grouting sleeve 321, and the second grouting sleeve 321 connects the second reinforcing steel bar 312 and the third reinforcing steel bar 322 through a grouting material 5.
The working principle and the beneficial effects of the technical scheme are as follows: second pier stud subsection 320 is the same with the principle of assembling of first pier stud subsection 310 and cushion cap 2, first reinforcing bar 210, second reinforcing bar 312, third reinforcing bar 322, the axis of first grout sleeve 311 and second grout sleeve 321 is the collineation setting after assembling, first reinforcing bar 210, second reinforcing bar 312, third reinforcing bar 322 all carries out interconnect through grout material 5, so that three reinforcing bar connects as an organic wholely in vertical direction, form and run through the same structure atress of cushion cap 2 and prefabricated pier stud 3 with same reinforcing bar.
In one embodiment, an anchoring end 220 and a first corrugated pipe 230 coaxially arranged with the anchoring end 220 are embedded in the bearing platform 2, the top end of the first corrugated pipe 230 penetrates through and protrudes out of the top surface of the bearing platform 2, a second corrugated pipe 313 coaxially arranged with the first corrugated pipe 230 is embedded in the first pier column section 310, the second corrugated pipe 313 penetrates through the first pier column section 310, a third corrugated pipe 323 coaxially arranged with the second corrugated pipe 313 is embedded in the second pier column section 320, the third corrugated pipe 323 penetrates through the second pier column section 320, the bottom end of the prestressed steel strand 4 sequentially penetrates through the third corrugated pipe 323, the second corrugated pipe 313 and the first corrugated pipe 230 and extends to be fixed with the anchoring end 220, the top end of the prestressed steel strand 4 is fixed on the second pier column section 320 through an anchoring block 7, and grouting slurry 5 for forming a bonding structure is arranged in each of the third corrugated pipe 323, the second corrugated pipe 313 and the first corrugated pipe 230.
The working principle and the beneficial effects of the technical scheme are as follows: when the bearing platform 2 is poured, the anchoring end 220 and the first corrugated pipe 230 are pre-embedded simultaneously, when the first pier stud section 310 and the second pier stud section 320 are sequentially assembled above the bearing platform 2, the first corrugated pipe 230, the second corrugated pipe 313 and the third corrugated pipe 323 are assembled coaxially, the subsequent installation of the prestressed steel stranded wires 4 is facilitated, the prestressed steel stranded wires 4 penetrate from top to bottom, then self-locking fixation is achieved when the bottom ends of the prestressed steel stranded wires are inserted into contact with the anchoring end 220 in the bearing platform 2, the penetrating of the prestressed steel stranded wires 4 from top to bottom and the self-locking are the prior art, and the details are not repeated herein; after the bottom end of the prestressed steel strand 4 is fixed, the upper end of the prestressed steel strand is tensioned, then grouting material 5 is injected into the first corrugated pipe 230, the second corrugated pipe 313 and the third corrugated pipe 323 to form a bonding structure, then the top end of the prestressed steel strand 4 is fixed through the anchor sealing block 7, and the joint of the third corrugated pipe 323, the grouting material 5 and the prestressed steel strand 4 is sealed, so that liquid infiltration during long-time use is reduced, the use durability of the prestressed steel strand 4 is further improved, and meanwhile, the durability of formed prestress can be improved.
In one embodiment, the top surface of the cap 2 is provided with an adjusting pad 9 for adjusting the elevation of the first pier stud segment 310 and a mortar bed 10 for connecting the first pier stud segment 310.
The working principle and the beneficial effects of the technical scheme are as follows: when the first pier stud segment 310 is assembled, firstly, the adjusting cushion block 9 is arranged on the bearing platform 2, then the first pier stud segment 310 and the bearing platform 2 are assembled in advance, the elevation of the first pier stud segment 310 assembly is adjusted through the adjusting cushion block 9, after the adjustment is completed, the first pier stud segment 310 is lifted, meanwhile, the slurry blocking template is arranged on the top end of the bearing platform 2, an area for arranging the mortar cushion layer 10 is formed by the slurry blocking template and the top surface of the bearing platform 2, the mortar cushion layer 10 adopts a high-strength shrinkage-free mortar cushion layer, after the mortar cushion layer 10 is arranged, the first pier stud segment 310 is moved downwards to be in contact with the upper portion of the slurry blocking template, meanwhile, the redundant mortar cushion layer 10 is extruded, the adjusting cushion block 9 is used for limiting the minimum gap of connection between the first pier stud segment 310 and the bearing platform 2, the smoothness of connection between the first pier stud segment 310 and the bearing platform 2 is guaranteed, and after the mortar cushion layer 10 reaches a certain strength, the slurry blocking template is detached.
In one embodiment, the shear key structure 6 includes: a first shear key 610 disposed on the top surface of the first pier stud segment 310 and a second shear key 620 disposed on the bottom surface of the second pier stud segment 320, wherein an epoxy adhesive is disposed at the joint of the first shear key 610 and the second shear key 620.
The working principle and the beneficial effects of the technical scheme are as follows: the arrangement of the first shear key 610 and the second shear key 620 avoids the prestressed steel strand 4; the first shear keys 610 are arranged on the top surface of the first pier column segment 310, the first shear keys 610 may be projections (or grooves) with isosceles trapezoid cross sections arranged on the top surface of the first pier column segment 310, the corresponding second shear keys 620 may be grooves (or projections with isosceles trapezoid cross sections) with isosceles trapezoid cross sections arranged on the bottom surface of the second pier column segment 320, the second shear keys 620 and the first shear keys 610 are capable of being mutually inserted, that is, the projections (or grooves) on the first pier column segment 310 can be inserted into the grooves (or projections) on the bottom surface of the second pier column segment 320, when the second pier column segment 320 is assembled, an epoxy adhesive with a certain thickness is arranged on the first shear keys 610 of the first pier column segment 310, and then the second shear keys 620 and the second shear keys 610 are correspondingly bonded, so that the first pier column segment 310 and the second pier column segment 320 have better structural strength under the limitation of the shear key structures 6, and the assembly strength of the pier can be guaranteed.
The invention also provides a method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars, which comprises the following steps:
step 1, prefabricating a precast tubular pile 1 and pier column segments;
step 6, penetrating a prestressed steel strand 4 downwards from the top of the second pier stud segment 320, so that the bottom end of the prestressed steel strand 4 sequentially penetrates through the third corrugated pipe 323, the second corrugated pipe 313 and the first corrugated pipe 230, and the bottom end of the prestressed steel strand 4 is anchored with an anchoring end 220 pre-embedded in the bearing platform 2;
and 7, tensioning the prestressed steel strands 4, then pressing and injecting grouting materials 5 from bottom to top through grouting pipes pre-embedded in the bearing platform 2, forming a bonding structure by the prestressed steel strands 4, the bearing platform 2, the first pier stud segment 310 and the second pier stud segment 320, and then arranging an anchor sealing block 7 at the top end of the second pier stud segment 320.
The working principle and the beneficial effects of the technical scheme are as follows: the prefabricated tubular pile 1 and the prefabricated pier stud 3 are prefabricated in the prefabricated yard, so that the time of on-site construction is greatly shortened, the influence on existing road traffic is reduced, the construction period is shortened, and the construction efficiency is improved; after the pier stud is spliced, vertical prestress is formed through the prestress steel strands 4, so that the durability of the joint is improved; by adopting the grouting material 5, a bonding structure is formed among the tensioned prestressed steel strand 4, the prefabricated pier stud 3 and the bearing platform 2, the prestressed steel strand 4 can be well protected, and the durability of the prestressed steel strand 4 is improved; the bottom surface of the second pier stud segment 320 is connected with the top surface of the first pier stud segment 320 through the shear key structure 6, so that the connection tightness of the second pier stud segment and the first pier stud segment is ensured, meanwhile, dislocation between the second pier stud segment and the first pier stud segment is prevented, and the stress strength of the second pier stud segment and the first pier stud segment is increased; the grouting material 5 can further improve the durability of the use of the prestressed steel strands 4, and can also improve the durability of the formed prestress.
In one embodiment, when the pier stud segments are assembled, the side surfaces of the pier stud segments are limited through the auxiliary positioning mechanism;
the auxiliary positioning mechanism comprises: frame type platform 11, the fixed elevating system 12 that is equipped with in below of frame type platform 11, the top activity of frame type platform 11 is equipped with four at least supporting component 8 of evenly arranging, supporting component 8 is used for supporting the side of assembling the pier stud segment of in-process to effort to between pier stud segment and the supporting component 8 carries out real-time detection, carries out analysis and judgement to the effort of a plurality of directions through the control end, if satisfy the requirement of assembling to the analysis result of effort, then need not to adjust the position of assembling of pier stud segment, if unsatisfied the requirement of assembling to the analysis result of effort, then adjust the position of assembling of pier stud segment in real time.
The working principle and the beneficial effects of the technical scheme are as follows: the frame-shaped platform 11 can be rectangular, the supporting components 8 are respectively arranged on four sides of the rectangle, the frame-shaped platform 11 can be split into two units which can be assembled by the diagonal line of the frame-shaped platform 11, the top end of the lifting mechanism 12 is fixed with the frame-shaped platform 11 and used for supporting the frame-shaped platform 11, the lifting mechanism 12 is provided with a plurality of lifting mechanisms 12, the plurality of lifting mechanisms 12 can lift simultaneously, the lifting mechanisms 12 can drive the frame-shaped platform 11 to move in parallel and move up and down, when the pier column sections are assembled, the positions of the auxiliary positioning mechanisms are preset, the positions of the two units of the frame-shaped platform 11 are adjusted according to the radial size of the pier column sections, generally, adjustment is not needed, a through hole in the center of the frame-shaped platform 11 can be suitable for most of the pier column sections, the parallel movement of the lifting mechanisms 12 is locked, then, the assembling height of the pier column sections is referred, and the height of the frame-shaped platform 11 is adjusted through the lifting mechanisms 12, so as to ensure that the pier column sections can be always contacted with the supporting components 8 when moving downwards at a certain height;
the supporting components 8 are arranged on the frame-shaped platform 11 in a telescopic mode, when the pier stud sections move downwards and do not reach the plane where the frame-shaped platform 11 is located, assembling and positioning can be carried out through modes such as visual positioning or laser positioning, accuracy of assembling positions of the pier stud sections is guaranteed, the supporting components 8 are in a contraction state at the moment, the pier stud sections move downwards after positioning is completed, when the bottom ends of the pier stud sections penetrate through holes formed in the center of the frame-shaped platform 11, the supporting components 8 are controlled to extend out of the frame-shaped platform 11 and to be in contact with the side faces of the pier stud sections, the supporting components 8 can support the side faces of the pier stud sections from multiple directions, the supporting components 8 are uniformly arranged in an even number, the supporting components 8 elastically support the pier stud sections, the lifted pier stud sections are assembled in high-altitude operation, the lifted pier stud sections are prone to swing in the radial direction, and at the moment, the swinging pier stud sections can be reset through the supporting components 8, and the situation that the positions of the pier stud sections cannot deviate in the downwards moving process is guaranteed;
each support component 8 can also detect the contact pressure between the support component and each pier stud segment in real time, if the cross section of each pier stud segment is in a central symmetrical pattern, the acting forces between the plurality of support components 8 and each pier stud segment are analyzed and judged at the same time, if the acting force detected by one support component 8 exceeds a first threshold range, the position deviation phenomenon of each pier stud segment is indicated, and if the position deviation phenomenon still exists in a certain time, the pier stud segments need to be repositioned and adjusted through the hoisting mechanism;
the method for judging whether the pier column segment has the position deviation phenomenon comprises the following steps:
acquiring acting forces between the pier stud segments and the support assembly 8 in multiple directions at a certain moment;
calculating the average value of the acting force obtained by the ith supporting component 8 for a plurality of times at the same moment
Where m is the number of times a single support member 8 acquires an applied force at the same time, F ij The force acquired for the ith support assembly 8 at the jth time;
calculating a judgment coefficient omega for judging whether the pier column segment has a position deviation phenomenon:
wherein n is the number of support assemblies 8;
comparing a judgment coefficient obtained at a certain moment with a reference coefficient, if the judgment coefficient is smaller than the reference coefficient, indicating that the pier column section does not deviate, if the judgment coefficient is larger than the reference coefficient, indicating that the pier column section deviates, starting timing the moment when the pier column section deviates, and if the time reaches preset time, if the judgment coefficient omega obtained by secondary detection is smaller than the reference coefficient, then the assembling position of the pier column section does not need to be adjusted, and if the judgment coefficient omega obtained by secondary detection is larger than the reference coefficient, then the assembling position of the pier column section needs to be repositioned and adjusted through a hoisting mechanism;
if the cross-sectional shape of the pier stud segment is an axisymmetric figure, analyzing and judging the acting force of the plurality of support assemblies 8 by taking two symmetrically arranged support assemblies as a group, judging whether the difference value between each group of acting force exceeds a second threshold range, if so, determining that the pier stud segment has a position deviation phenomenon, if the position deviation phenomenon still exists in a certain time, determining that the pier stud segment deviates in the direction of the group of support assemblies 8, repositioning and adjusting the pier stud segment by a hoisting mechanism, or judging the acting force of the symmetrically arranged support assemblies 8 by adopting the formula in the method, and correspondingly adjusting corresponding parameters in the formula;
through the auxiliary positioning mechanism who sets up, can assemble when the pier stud segment, move down the skew condition of assembling the process and carry out real-time detection to it, the pier stud segment if take place the skew because rocking of its self production, then can make it rock through a plurality of supporting component 8 in a certain time and stop, so that it resets, the pier stud segment if because the lifting machine position that lifts by crane the mechanism takes place the skew, then can regard as the effort that a plurality of supporting component 8 detected as the reference, after fixing a position again to the position of assembling of pier stud segment, continue again to move down and assemble, in order to guarantee the accuracy that the position was assembled to the pier stud segment.
In one embodiment, the support assembly 8 comprises: the telescopic rod 810 is fixedly arranged on the frame-shaped platform 11, one end of the telescopic rod 810 is fixedly provided with a toothed plate 820, the toothed plate 820 is provided with a sliding groove 821, the frame-shaped platform 11 is provided with a sliding block 13 which is in sliding connection with the sliding groove 821, the frame-shaped platform 11 is rotatably provided with a gear 830 which is in meshing connection with the toothed plate 820 through a gear shaft 831, the gear 830 is fixedly provided with a first support rod 840, the first support rod 840 is fixedly provided with a limit ring 841, one side of the limit ring 841, which is far away from the gear 830, is provided with a movable sleeve 850 which is in sliding connection with the first support rod 820, a first spring 851 is connected between the movable sleeve 850 and the limit ring 841, the outer side of the movable sleeve 850 is symmetrically provided with a first connection rod 852, one end of the first connection rod 852, which is far away from the movable sleeve 850, is rotatably connected with a second support rod 860, one end of the second support rod 860, which is far away from the first connection rod 852, a connection cylinder 870 is connected with a third support rod 880 through a second spring, the end of the third support rod 81880, which extends out of the connection rod 81840, and the end 8100 of the fourth support rod 8120, which is provided with a fourth support rod 81840, and a connection shaft 81840, 8120, which is far away from the connection rod 81840, which is provided with a fourth support rod 8120, and a connection shaft 81890, which is provided with a fourth support rod 81840, a connection rod 8120, a connection shaft 81840, which is provided with a fourth support rod 81840, and a connection rod 81840, respectively;
a plurality of limiting columns 842 are arranged on the first supporting rod 840, the limiting columns 842 are circumferentially arranged by taking the axis of the gear 830 as a circle center, an arc-shaped limiting groove body 8140 is fixedly arranged on the frame-shaped platform 11, and the limiting columns 842 are slidably arranged in the arc-shaped limiting groove body 8140;
the surface that third connecting rod 8120 is connected with third spring 8130 is equipped with the pressure sensor who is used for detecting the effort, pressure sensor with the control end is connected.
The working principle and the beneficial effects of the technical scheme are as follows: when the support assembly 8 is retracted onto the frame-shaped platform 11, the axis of the first support rod 840 is parallel to the axis of the telescopic rod 810, the plurality of support assemblies 8 avoid a via hole in the center of the frame-shaped platform 11, so that a pier column section can pass through the auxiliary positioning mechanism without contact, when the bottom end of the pier column section passes through a certain distance, the telescopic rod 810 is controlled by the control end to drive the toothed plate 820 to move linearly, so that the gear 830 meshed with the toothed plate 820 rotates, the gear 830 rotates to drive the first support rod 840 fixedly connected with the gear 830 to rotate, the plurality of first support rods 840 all extend rotationally in the same rotational direction, the rotation of the first support rod 840 is limited by sliding the plurality of limit posts 842 in the arc-shaped limit slot body 8140, the limit posts 842 can be three, the three limit posts 842 are circumferentially distributed on an arc with the axis of the gear 830 as the center of a circle, when the first support rod 840 moves to be perpendicular to the axis of the telescopic rod 810, the limit posts 842 move to one end of the arc-shaped limit 8140 for limiting, and the support assembly 8 completely extends out of the frame-shaped platform 11;
in the moving process of the first support rod 840, the abutting wheel 8100 is driven to rotate and gradually contact with the side face of the pier stud section, and the abutting wheel 8110 can rotate, so that the support component 8 can conveniently roll and contact with the side face of the pier stud section, and the support component 8 can conveniently extend out;
the two second connecting rods 890 form a figure eight when not stressed, after the support assembly 8 is contacted with the side surface of the pier stud segment, two support points are formed through the two abutting wheels 8100 and the side surface of the pier stud segment, if the pier stud segment shakes in the axial direction of the first support rod 840 of a certain extending support assembly 8, the two abutting wheels 8100 are pressed, after the abutting wheels 8100 are subjected to extrusion force, force is simultaneously transmitted to the second connecting rods 890 and the third support rod 880, so that the third connecting rod 8120 presses the third spring 8130 and the third support rod 880 presses the second spring, if the acting force is large, the connecting cylinder 870 pushes the second support rod 860 to drive the first connecting rod 852 and the movable sleeve 850 to move, so that the first spring 851 is compressed, and under the elastic restoring acting force of the first spring 851, the second spring and the third spring 8130, the abutting wheels 8100 are urged to form a reaction force on the pier stud segment, so as to reduce or prevent the shaking of the pier stud segment; if the pier stud segment shakes in the radial direction of the first support rod 840 of a certain extended support component 8, one of the abutting wheels 8100 is squeezed and rolls relative to the abutting wheel 8100, the third support rod 880, the connecting cylinder 870 and the second support rod 860 connected with the abutting wheel 8100 incline, and the movable sleeve 850 can move to squeeze the first spring 851, so that the abutting wheel 8100 forms a reaction force on the pier stud segment under the action of the elastic restoring force of the first spring 851, and the simultaneous support action of the plurality of support components 8 can form elastic support on the movement of the pier stud segment in multiple directions, thereby ensuring the position stability when the pier stud segment moves downwards;
when the third spring 8130 is compressed, the pressure sensor disposed at the connection between the third connection rod 8120 and the third spring 8130 generates a pressure value, which reflects the acting force between the support assembly 8 and the pier stud segment.
It should be noted that the urban rail transit is divided into a subway system, an urban area fast rail system, a light rail system, a medium-low speed magnetic levitation traffic system, a straddle type monorail system, a suspension type monorail system, a self-guiding rail system, a tramcar system, a guide rail type rubber wheel system, an electronic guiding rubber wheel system and the like according to system standards, and the method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars is applicable to all the rail transit standards.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a structure through having bonding prestressing tendons and reinforcing bar to connect prefabricated vase mound which characterized in that includes: prefabricated pier stud (3) that prefabricated tubular pile (1), cushion cap (2) and two at least pier stud segments concatenation that set gradually formed, prestressing force steel strand wires (4) run through prefabricated pier stud (3) and anchor are in inside cushion cap (2), prestressing force steel strand wires (4) through grout material (5) with be formed with the bonding structure between prefabricated pier stud (3) and the cushion cap (2).
2. The structure of connecting prefabricated vase piers by means of bonded tendons and steel bars according to claim 1, wherein the prefabricated pier stud (3) comprises: the bearing platform is characterized in that a first pier column section (310) is arranged above the bearing platform (2), a second pier column section (320) is arranged above the first pier column section (310), and a shear key structure (6) is arranged on the joint surface of the first pier column section (310) and the second pier column section (320).
3. The structure of the prefabricated vase pier connected by the adhesive prestressed tendons and the steel bars according to claim 1, wherein first steel bars (210) are embedded in the bearing platform (2), a first grouting sleeve (311) coaxially arranged with the first steel bars (210) is embedded in the bottom of the first pier column section (310), the top ends of the first steel bars (210) extend out of the top surface of the bearing platform (2) and are inserted into the first grouting sleeve (311), second steel bars (312) coaxially arranged with the first grouting sleeve (311) are embedded in the first pier column section (310), the top ends of the second steel bars (312) extend out of the top of the first pier column section (310), the bottom ends of the second steel bars (312) extend into the first grouting sleeve (311), and the first steel bars (210) and the second steel bars (312) are connected by grouting material (5) in the first grouting sleeve (311).
4. The structure of connecting the prefabricated vase pier by the bonded prestressed tendons and the steel bars according to claim 3, wherein a second grouting sleeve (321) coaxially arranged with the second steel bars (312) is embedded in the bottom of the second pier column section (320), the top ends of the second steel bars (312) are inserted into the second grouting sleeve (321), third steel bars (322) coaxially arranged with the second grouting sleeve (321) are embedded in the second pier column section (320), the bottom ends of the third steel bars (322) extend into the second grouting sleeve (321), and the second steel bars (312) and the third steel bars (322) are connected by grouting slurry (5) in the second grouting sleeve (321).
5. The structure of connecting prefabricated vase pier through the bonded prestressed tendons and the steel bars as claimed in claim 2, it is characterized in that an anchoring end (220) and a first corrugated pipe (230) which is coaxial with the anchoring end (220) are pre-embedded in the bearing platform (2), the top end of the first corrugated pipe (230) penetrates through and protrudes out of the top surface of the bearing platform (2), a second corrugated pipe (313) which is coaxially arranged with the first corrugated pipe (230) is embedded in the first pier column segment (310), the second bellows (313) is disposed through the first pier segment (310), a third corrugated pipe (323) which is coaxial with the second corrugated pipe (313) is pre-buried in the second pier column section (320), the third bellows (323) disposed through the second pier column segment (320), the bottom end of the prestressed steel strand (4) sequentially penetrates through the third corrugated pipe (323), the second corrugated pipe (313) and the first corrugated pipe (230), and extends to be fixed with the anchoring end (220), the top end of the prestressed steel strand (4) is fixed on the second pier stud segment (320) through an anchor sealing block (7), grouting materials (5) used for forming bonding structures are arranged in the third corrugated pipe (323), the second corrugated pipe (313) and the first corrugated pipe (230).
6. The structure of prefabricated vase pier connected by means of bonded prestressed tendons and steel bars as claimed in claim 2, wherein the top surface of the platform (2) is provided with adjusting pads (9) for adjusting the elevation of the first pier stud segment (310) and mortar cushions (10) for connecting the first pier stud segment (310).
7. The structure of connecting prefabricated vase piers by means of bonded tendons and steel bars according to claim 2, wherein the shear key structure (6) comprises: the first shear key (610) is arranged on the top surface of the first pier column segment (310), the second shear key (620) is arranged on the bottom surface of the second pier column segment (320), and epoxy adhesive is arranged at the joint of the first shear key (610) and the second shear key (620).
8. A method for connecting prefabricated vase piers by means of bonded tendons and reinforcing bars, comprising the structure of any one of claims 1 to 7 for connecting prefabricated vase piers by means of bonded tendons and reinforcing bars, comprising:
step 1, prefabricating a prefabricated tubular pile (1) and a pier stud segment;
step 2, constructing the precast tubular pile (1), pouring a bearing platform (2) on the precast tubular pile, and meanwhile, pre-burying a first steel bar (210), an anchoring end (220) and a first corrugated pipe (230) in the bearing platform (2) to enable the first steel bar (210) to extend out of the top of the bearing platform (2), wherein the first corrugated pipe (230) extends out of the top surface of the bearing platform (2) from the anchoring end (220);
step 3, arranging an adjusting cushion block (9) on the top surface of the bearing platform (2), adjusting the verticality of the first pier stud segment (310) through the adjusting cushion block (9), after the adjustment is completed, arranging a mortar blocking template on the bearing platform (2), arranging a mortar cushion layer (10) in an area enclosed by the top surface of the bearing platform (2) and the mortar blocking template, and lifting the first pier stud segment (310) at the same time;
step 4, assembling the first pier stud section (310), inserting a first steel bar (210) extending out of the top of the bearing platform (2) into a first grouting sleeve (311) pre-embedded at the bottom of the first pier stud section (310), simultaneously enabling a first corrugated pipe (230) pre-embedded in the bearing platform (2) to coincide with the axis of a second corrugated pipe (313) pre-embedded in the first pier stud section (310), and then injecting grouting material (5) into the first grouting sleeve (311);
step 5, arranging epoxy adhesive on a first shear key (610) on the top surface of the first pier stud segment (310), lifting the second pier stud segment (320), enabling a second shear key (620) on the bottom surface of the second pier stud segment (320) to be attached to the first shear key (610) through the epoxy adhesive, enabling a second steel bar (312) extending out of the top of the first pier stud segment (310) to be correspondingly inserted into a second grouting sleeve (321) pre-embedded at the bottom of the second pier stud segment (320), enabling a third corrugated pipe (323) pre-embedded in the second pier stud segment (320) to coincide with the axis of a second corrugated pipe (313) pre-embedded in the first pier stud segment (310), and then injecting grouting material (5) into the second grouting sleeve (321);
step 6, a prestressed steel strand (4) is downwards penetrated from the top of the second pier stud segment (320), the bottom end of the prestressed steel strand (4) sequentially penetrates through a third corrugated pipe (323), a second corrugated pipe (313) and a first corrugated pipe (230), and the bottom end of the prestressed steel strand (4) is anchored with an anchoring end (220) pre-buried in the bearing platform (2);
and 7, tensioning the prestressed steel strands (4), then pressing and injecting grouting materials (5) from bottom to top through grouting pipes pre-embedded in the bearing platform (2), forming a bonding structure by the prestressed steel strands (4), the bearing platform (2), the first pier column segment (310) and the second pier column segment (320), and then arranging an anchor sealing block (7) at the top end of the second pier column segment (320).
9. The method for connecting the prefabricated vase pier through the bonded prestressed tendons and the steel bars according to claim 8, wherein when the pier column sections are assembled, the side surfaces of the pier column sections are limited through an auxiliary positioning mechanism;
the auxiliary positioning mechanism comprises: frame type platform (11), the fixed elevating system (12) that is equipped with in below of frame type platform (11), the top activity of frame type platform (11) is equipped with at least four supporting component (8) of evenly arranging, supporting component (8) are used for supporting the side of the pier stud subsection of assembling in-process to effort to carry out real-time detection to the effort between pier stud subsection and supporting component (8), carry out analysis and judgement through the ascending effort of control end to a plurality of directions, if satisfy the requirement of assembling to the analysis result of effort, then need not to adjust the position of assembling of pier stud subsection, if do not satisfy the requirement of assembling to the analysis result of effort, then adjust the position of assembling of pier stud subsection in real time.
10. Method for joining prefabricated vase piers by means of bonded tendons and rebars according to claim 9, wherein the support assembly (8) comprises: fixed setting is in telescopic link (810) on frame type platform (11), the fixed pinion rack (820) that is equipped with in one end of telescopic link (810), be equipped with spout (821) on pinion rack (820), be equipped with on frame type platform (11) with spout (821) sliding connection's slider (13), rotate through gear shaft (831) on frame type platform (11) and be equipped with gear (830) that pinion rack (820) meshing is connected, the fixed first bracing piece (840) that is equipped with on gear (830), fixed spacing ring (841) that is equipped with on first bracing piece (840), spacing ring (841) are kept away from one side of gear (830) is equipped with sliding connection and is in movable sleeve (850) on first bracing piece (840), be connected with first spring (851) between movable sleeve (850) and the spacing ring (841), the outside symmetry of movable sleeve (850) is equipped with first connecting rod (852), the one end that first connecting rod (852) kept away from movable sleeve (850) rotates and is connected with second bracing piece (860), second bracing piece (860) are equipped with third connecting rod (870), the connecting rod (870) is connected with third connecting tube (870), the connecting rod (880) is connected with the end portion (870), the connecting rod (870) that stretches out of the third connecting tube (870), the connecting tube (880) is connected with the connecting rod (870), the connecting rod (870) is connected with the connecting rod (880) is connected with the connecting rod (870) A second connecting rod (890), wherein a butting wheel (8100) is arranged on a rotating connecting shaft of the third supporting rod (880) and the second connecting rod (890), a fourth supporting rod (8110) is arranged inside one end, far away from the gear (830), of the first supporting rod (840) in a sliding manner, a third connecting rod (8120) is arranged at the end, extending out of the first supporting rod (840), of the fourth supporting rod (8110), two ends of the third connecting rod (8120) are respectively connected with the ends of the two second connecting rods (890) in a rotating manner, and a third spring (8130) is arranged between the bottom end of the first supporting rod (840) and the third connecting rod (8120);
a plurality of limiting columns (842) are arranged on the first supporting rod (840), the limiting columns (842) are circumferentially arranged by taking the axis of the gear (830) as a circle center, an arc-shaped limiting groove body (8140) is fixedly arranged on the frame-shaped platform (11), and the limiting columns (842) are slidably arranged in the arc-shaped limiting groove body (8140);
and a pressure sensor for detecting acting force is arranged on the surface of the third connecting rod (8120) connected with the third spring (8130), and the pressure sensor is connected with the control end.
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| CN202210954953.6A CN115233559B (en) | 2022-08-10 | 2022-08-10 | Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars |
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| CN202210954953.6A CN115233559B (en) | 2022-08-10 | 2022-08-10 | Method for connecting prefabricated vase pier through bonded prestressed tendons and steel bars |
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| CN108103926A (en) * | 2017-12-25 | 2018-06-01 | 中交第二公路勘察设计研究院有限公司 | Assembled hollow pier and its construction method based on end plate welding |
| CN111335155A (en) * | 2020-04-22 | 2020-06-26 | 中铁第五勘察设计院集团有限公司 | Railway assembled hollow pier and construction method thereof |
| CN212834960U (en) * | 2020-05-08 | 2021-03-30 | 福州旌研工程科技有限公司 | Prefabricated type pier of assembling |
| CN213709140U (en) * | 2020-03-31 | 2021-07-16 | 中国铁路设计集团有限公司 | Pier is assembled in prefabrication through steel bar grout bellows coupling |
| WO2021179427A1 (en) * | 2020-03-10 | 2021-09-16 | 青岛理工大学 | Frame-type replaceable buckling-preventing and shock-absorbing energy consumption apparatus and usage method |
| CN114411535A (en) * | 2022-03-11 | 2022-04-29 | 北京交通大学 | Full-prestress double-column type segment assembled pier with external energy dissipation damper and design and construction method thereof |
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2022
- 2022-08-10 CN CN202210954953.6A patent/CN115233559B/en active Active
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| CN103374881A (en) * | 2012-04-24 | 2013-10-30 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated segment assembling pier structure system and construction method thereof |
| CN108103926A (en) * | 2017-12-25 | 2018-06-01 | 中交第二公路勘察设计研究院有限公司 | Assembled hollow pier and its construction method based on end plate welding |
| WO2021179427A1 (en) * | 2020-03-10 | 2021-09-16 | 青岛理工大学 | Frame-type replaceable buckling-preventing and shock-absorbing energy consumption apparatus and usage method |
| CN213709140U (en) * | 2020-03-31 | 2021-07-16 | 中国铁路设计集团有限公司 | Pier is assembled in prefabrication through steel bar grout bellows coupling |
| CN111335155A (en) * | 2020-04-22 | 2020-06-26 | 中铁第五勘察设计院集团有限公司 | Railway assembled hollow pier and construction method thereof |
| CN212834960U (en) * | 2020-05-08 | 2021-03-30 | 福州旌研工程科技有限公司 | Prefabricated type pier of assembling |
| CN114411535A (en) * | 2022-03-11 | 2022-04-29 | 北京交通大学 | Full-prestress double-column type segment assembled pier with external energy dissipation damper and design and construction method thereof |
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| CN115233559B (en) | 2023-03-28 |
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