CN210482021U

CN210482021U - Prefabricated assembling pier column structure connected through steel bars inserted into corrugated pipe

Info

Publication number: CN210482021U
Application number: CN201921115111.1U
Authority: CN
Inventors: 赵秋; 黄金局; 张骏超; 黄燕萍
Original assignee: Fuzhou University
Current assignee: Fuzhou University
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-05-08
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to a pier stud structure is assembled to prefabrication through reinforcing bar insertion bellows connection, including the cushion cap, the cushion cap upper surface is equipped with the recess, and the inside support column that is used for supporting the pier stud bottom surface that is equipped with of recess, the recess is inside vertically around the support column to have buried a plurality of bellows underground, and in a plurality of root owner muscle and the bellows one-to-ones of pier stud bottom inserted the bellows, the inside intussuseption that is equipped with of bellows, and the recess is built inside has the concrete filling layer. This through the simple structure of pier stud structure is assembled in prefabrication of reinforcing bar insertion bellows connection.

Description

Prefabricated assembling pier column structure connected through steel bars inserted into corrugated pipe

Technical Field

The utility model relates to a pier stud structure is assembled to prefabrication that inserts bellows connection through the reinforcing bar relates to the civil engineering field.

Background

Along with the popularization of environmental protection and energy saving consciousness, the requirement of people on the modernization degree of urban bridge construction is higher and higher, and the requirements of rapidness, safety, energy conservation, environmental protection, small traffic interference, excellent construction quality and the like exist for the construction of urban bridges from urban residents to bridge design and constructors. The construction assembly type construction technology is the key point for meeting the requirements, the prefabrication and assembly technology of the upper structure of the bridge is quite mature, and construction and research personnel gradually transfer the eyesight to the realization of the prefabrication and assembly technology of the lower structures such as bridge piers and the like so as to realize the full prefabrication of the bridge.

In 1971, the united states of texas introduced segment-assembled piers for the first time for the construction of a road bridge spanning the JFK embankment in coppers clissi city (corpus christisi), and with the introduction of prefabricated segment assembly technology, segment-assembled piers began to be applied in large scale in the united states or europe. For the prefabricated segment assembly construction technology, China is mainly applied to superstructure construction of bridges, the project application of segment assembly concrete piers is less, and the segment assembly concrete piers mainly adopt wet joint connection to assemble solid piers and are only applied to bridges such as east sea bridges, Hangzhou bay bridges, Beijing ponder bridge test projects, Shanghai Yangtze river bridges and the like.

The existing connection mode of the assembly type bridge pier still has a plurality of defects, for example, the bridge pier adopts cast-in-place seam splicing, the connection process of main reinforcing steel bars of the bridge pier is complex, and the connection quality is not easy to guarantee; if adopt the grout muffjoint that prefabricated assembly structure often adopted, because muffjoint's construction tolerance is little, higher to the construction precision requirement, two reinforcing bars of butt joint easily lead to an overlength because of the construction error in the sleeve, and an overlength, and the too short one has the anchor length and leads to the risk that the reinforcing bar is pulled out inadequately, and this method is not applicable to the connection of earthquake-resistant area assembled structure at present. The safety of the bridge substructure is particularly important, and therefore, there is a need for a novel bridge pier joint connection technique to overcome the above disadvantages.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of prior art, the utility model aims to solve the technical problem that a prefabricated pier stud structure of assembling through reinforcing bar insert bellows connection is provided, simple structure not only, convenient high efficiency moreover.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a pier stud structure is assembled in prefabrication through reinforcing bar inserts bellows connection, includes the cushion cap, and the cushion cap upper surface is equipped with the recess, and the inside support column that is used for supporting the pier stud bottom surface that is equipped with of recess, and the recess is inside to be vertically buried a plurality of bellows around the support column underground, and a plurality of main muscle and the bellows one-to-one of pier stud bottom insert in the bellows, and the inside intussuseption that is equipped with of bellows has poured the concrete filling layer in the recess.

Preferably, pier stud inside arranges vertical main muscle and horizontal stirrup, and the main muscle extends the pier stud bottom surface along pier stud direction of height.

Preferably, the length of the main rib extending out of the bottom surface of the pier stud needs to meet the anchoring length of the main rib inserted into the corrugated pipe, and the length of the corrugated pipe is greater than that of the main rib of the pier stud.

Preferably, the concrete filling layer is made of shrinkage-compensating concrete or ultra-high performance concrete.

Preferably, the bottom of the corrugated pipe is embedded below the groove bottom of the groove, and the top of the corrugated pipe is located at or above the groove bottom of the groove but not higher than the notch of the groove.

Preferably, the inner filling layer is made of high-strength mortar or grouting material.

Preferably, the top surface of the supporting column is flush with the upper surface of the bearing platform.

Compared with the prior art, the utility model discloses following beneficial effect has: the corrugated pipe is of a pipe structure, the concave-convex shape is formed on the pipe wall to enhance the bonding with the inner filling layer and the concrete filling layer, and the connection at the assembly node is firm; the bridge lower structure is assembled in construction, industrial production of a bridge pier is realized, and the bridge pier is directly assembled on site.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a partial configuration diagram of fig. 1.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is a sectional view B-B of fig. 3.

Fig. 5 is a schematic view of the internal construction of the pier stud.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1-5, a prefabricated assembled pier stud structure connected by inserting steel bars into a corrugated pipe comprises a bearing platform 1, wherein a groove 6 is formed in the upper surface of the bearing platform, a support column 7 used for supporting the bottom surface of the pier stud 2 is arranged in the groove, a plurality of corrugated pipes 4 are vertically embedded in the groove around the support column, a plurality of main ribs 5 at the bottom of the pier stud correspond to the corrugated pipes one by one and are inserted into the corrugated pipes, an inner filling layer 8 is arranged in each corrugated pipe, and a concrete filling layer 3 is poured in the groove.

The embodiment of the utility model provides an in, pier stud internally arranged has vertical main muscle and horizontal stirrup 9, and main muscle extends the pier stud bottom surface along pier stud direction of height.

The embodiment of the utility model provides an in, main muscle stretches out the anchor length that the length outside the pier stud bottom surface needs to satisfy main muscle and inserts the bellows, and bellows length is greater than the anchor length of pier stud owner muscle.

The embodiment of the utility model provides an in, the concrete filling layer adopts compensation shrink concrete or super high performance concrete, should be higher than cushion cap concrete strength grade.

The embodiment of the utility model provides an in, the bottom of bellows is all pre-buried in the position below the recess tank bottom, the top of bellows all is located recess tank bottom or above position but not higher than the notch of recess.

The embodiment of the utility model provides an in, the inner filling layer adopts high strength mortar or grout material.

In the embodiment of the present invention, the top surface of the supporting pillar is flush with the upper surface of the supporting platform.

A construction method for a prefabricated assembled pier column structure connected by inserting steel bars into corrugated pipes comprises the following steps: (1) prefabricating a pier column: manufacturing a pier column template, binding main reinforcements and stirrups of the pier column, performing prefabricated pier column concrete pouring, covering with canvas after pouring, standing for a period of time, starting ventilation and temperature rise steam curing, stopping curing when the designed strength is more than 90%, and dismantling the template after ensuring that the concrete is not damaged due to template removal; (2) transporting the pier stud to the site: the tire type matched transport vehicle is transported to a construction site, a rubber pad for damping and preventing friction is paved on a carriage plate, the prefabricated pier stud is fixed after being loaded, the fixing condition is checked, and the vehicle can be dispatched after meeting the safe transport requirement; (3) storing the components on site: the stacking site of the components is wide, flat and solid, has good drainage, and is provided with sleepers as support pads for preventing the prefabricated pier stud from being polluted; (4) pile foundation and bearing platform construction: firstly, pile foundation construction is carried out, a foundation pit is excavated to carry out cushion layer construction of a bearing platform, reinforcing steel bars of the bearing platform are bound, corrugated pipes are embedded according to the designed position, a bearing platform template is installed, bearing platform concrete is poured and maintained, and finally roughening treatment is carried out on the inner surface of a groove of the bearing platform; (5) hoisting the prefabricated pier stud; (6) the crane slowly transfers the lower end of the pier stud to the top of the bearing platform, so that three points of a hanging point, the center of the bottom surface of the pier stud and the center of the bearing platform are positioned on the same vertical line, the overhanging main rib of the pier stud is inserted into the embedded corrugated pipe, and the top surface of the support column in the center of the groove is in contact with the bottom surface of the pier stud to support the weight of the pier stud; (7) temporary fixing and correcting: the periphery of the pier body is fixed by adopting inclined struts, four feet of each inclined strut are propped by a screw jack, the verticality of the column is detected by a theodolite or a total station, and if the deviation exceeds a permissible value, the verticality of the pier body is adjusted by the inclined struts; (8) construction of a connecting joint: after confirming the position and the verticality of the pier column and retesting the pier column without errors, pouring high-strength mortar or grouting material into the corrugated pipe, applying a layer of reinforcing mesh to the notch of the groove, and pouring compensation shrinkage concrete or ultrahigh-performance concrete into the groove; (9) maintenance and temporary support dismantling: and (3) after the groove is poured, timely watering for maintenance, maintaining the outside by wrapping the plastic film with the geotextile, keeping the surface of the concrete moist, and temporarily fixing the step (7) when the strength of the concrete reaches 90%.

The embodiment of the utility model provides an in step (8), promote the pier stud a little and expose the corrugated pipe mouth before going into high strength mortar or grout material to the bellows in, after going into high strength mortar or grout material in the bellows, the main muscle of pier stud should insert the bellows before high strength mortar or grout material solidify, and the main muscle is crowded high strength mortar or grout material and is filled up the bellows gap when inserting and closely knit in order to guarantee the contact.

The present invention is not limited to the above-mentioned best mode, and any person can obtain the prefabricated pier stud structure assembled through the connection of the steel bar inserted corrugated pipe in other various forms under the teaching of the present invention. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims

1. The utility model provides a pier stud structure is assembled to prefabrication of inserting corrugated pipe connection through reinforcing bar which characterized in that: the corrugated pipe pile comprises a bearing platform, wherein a groove is formed in the upper surface of the bearing platform, a supporting column used for supporting the bottom surface of a pier column is arranged in the groove, a plurality of corrugated pipes are vertically embedded around the supporting column in the groove, a plurality of main ribs at the bottom of the pier column correspond to the corrugated pipes one by one and are inserted into the corrugated pipes, an inner filling layer is arranged in each corrugated pipe, and a concrete filling layer is poured in the groove.

2. The prefabricated assembled pier column structure connected through steel bars inserted into corrugated pipes according to claim 1, wherein: vertical main muscle and horizontal stirrup have been arranged to pier stud inside, and the main muscle extends the pier stud bottom surface along pier stud direction of height.

3. The prefabricated assembled pier column structure connected through steel bars inserted into corrugated pipes according to claim 1, wherein: the length of the main rib extending out of the bottom surface of the pier stud needs to meet the anchoring length of the main rib inserted into the corrugated pipe, and the length of the corrugated pipe is larger than that of the main rib of the pier stud.

4. The prefabricated assembled pier column structure connected through steel bars inserted into corrugated pipes according to claim 1, wherein: the concrete filling layer is made of shrinkage-compensating concrete or ultrahigh-performance concrete.

5. The prefabricated assembled pier column structure connected through steel bars inserted into corrugated pipes according to claim 1, wherein: the bottom of the corrugated pipe is pre-buried below the groove bottom of the groove, and the top of the corrugated pipe is located at or above the groove bottom of the groove but not higher than the notch of the groove.

6. The prefabricated assembled pier column structure connected through steel bars inserted into corrugated pipes according to claim 1, wherein: the inner filling layer is made of high-strength mortar or grouting material.

7. The prefabricated assembled pier column structure connected through steel bars inserted into corrugated pipes according to claim 1, wherein: the top surface of the supporting column is flush with the upper surface of the bearing platform.