CN113338165A

CN113338165A - Cast-in-place arch bridge combined support structure and construction method thereof

Info

Publication number: CN113338165A
Application number: CN202110651916.3A
Authority: CN
Inventors: 王圣挥; 王小攀; 时文龙; 焦克滨; 王亚州
Original assignee: China Construction Second Engineering Bureau Civil Engineering Group Co Ltd
Current assignee: China Construction Second Engineering Bureau Civil Engineering Group Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-09-03
Anticipated expiration: 2041-06-11
Also published as: CN113338165B

Abstract

The invention discloses a cast-in-place arch bridge combined support structure and a construction method thereof. According to the invention, the concrete bottom pile is poured at the bottom of the riverbed, the supporting columns are spliced with the concrete bottom pile and are limited by the fixing rods and the limiting rods, the concrete bottom pile can provide a firm supporting point for the primary bearing platform and the secondary bearing platform, so that the arch bridge can be poured conveniently, various equipment can be disassembled conveniently after the arch bridge is poured, and the concrete bottom pile can not influence the flow velocity of passing ships and water flow under the water surface, so that the construction safety is greatly improved.

Description

Cast-in-place arch bridge combined support structure and construction method thereof

Technical Field

The invention relates to the technical field of bridge construction equipment, in particular to a cast-in-place arch bridge combined support structure and a construction method thereof.

Background

The cast-in-place reinforced concrete arch bridge is usually used as a main model of an urban river-related bridge due to the large spanning capacity, high bearing capacity and great bridge shape, and the support method is a main construction method of the cast-in-place arch bridge. In recent years, the requirement for environmental protection and water conservation is more and more strict, and particularly, the island-bound narrow riverbed is strictly forbidden to be built in urban river engineering so as to avoid the hidden troubles of water and soil loss, water environmental pollution and flood season safety flood.

The existing arch bridge construction has the serious problem that the upright posts are inserted into the riverbed when in use to further support the superstructure, and when the arch bridge is disassembled, the disassembly is difficult, and the bottom of the riverbed is different in structural strength, so that the safety of the superstructure can be influenced, the process is complex when equipment is installed, the equipment cannot be quickly installed in place, and the construction progress can be influenced.

Disclosure of Invention

The invention aims to provide a cast-in-place arch bridge combined support structure and a construction method thereof, which solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a cast-in-place arch bridge combined support structure and a construction method thereof comprise a first-stage bearing platform, pile foundations, a second-stage bearing platform, an arch device and a supporting device, wherein the first-stage bearing platform comprises concrete bottom piles, supporting columns, a reinforcing device and fixing rods, a U-shaped groove is formed in the top of each concrete bottom pile, a convex block is inserted into the bottom of an inner cavity of each U-shaped groove, the supporting columns are inserted into the top of each concrete bottom pile, the supporting columns are fixedly connected with the concrete bottom piles through the reinforcing devices, the adjacent supporting columns are connected through the two fixing rods, two ends of each fixing rod are respectively connected with the corresponding supporting column through fixing connecting seats, the two pile foundations are distributed on two sides of the first-stage bearing platform, limiting rods are installed between the pile foundations and the corresponding supporting columns, and two ends of each limiting rod are respectively connected with the corresponding pile foundations and the corresponding supporting columns through limiting connecting seats, the second-stage bearing platform is positioned at the top of the first-stage bearing platform and comprises two reinforcing devices, a circular seat, a bearing plate and a hydraulic pump, the two reinforcing devices are respectively positioned at two sides of the bearing plate and comprise a longitudinal steel plate and an auxiliary framework, the longitudinal steel plate is connected with the bearing plate through bolts, the auxiliary framework penetrates through the longitudinal steel plate and is contacted with the arch-shaped device, the hydraulic pump is embedded at the top of the bearing plate, the circular seat is inserted at the top of the hydraulic pump, two ends of the arch-shaped device are respectively positioned at the top of the pile foundation, the arch-shaped device comprises a first side plate, a second side plate and a bottom plate, the first side plate, the second side plate and the bottom plate are spliced into a U-shaped structure, the supporting device is positioned at the upper part of the bearing plate, and the supporting device comprises an arch-shaped plate and a main framework, the both ends of arched plate are fixed in respectively through the bolt the top of loading board, the main skeleton runs through the inside of arched plate to the top of main skeleton with the bottom plate contact, the bottom of main skeleton with circular seat contact.

As a preferred embodiment of the present invention, the reinforcing device includes a transverse plate, a reinforcing rod and a reinforcing connecting seat, the plate is fixed to the outer sidewall of the concrete bottom pile by a bolt, and both ends of the reinforcing rod are respectively connected to the top of the transverse plate and the outer sidewall of the supporting column by the reinforcing connecting seat.

As a preferred embodiment of the present invention, a reinforcing buckle is sleeved at the intersection of the two fixing rods.

In a preferred embodiment of the present invention, the first side plate and the bottom plate and the second side plate and the bottom plate are connected by a reinforcement.

In a preferred embodiment of the present invention, a steel plate is fixed to the top of the main frame by bolts, and the steel plate is in contact with the bottom of the bottom plate.

In a preferred embodiment of the present invention, a fastener is screwed to an outer sidewall of the arch plate, and the fastener penetrates through the arch plate to contact with an outer sidewall of the main frame.

As a preferred embodiment of the present invention, a positioning column is welded on the top of the bearing plate, a through hole is formed at the bottom of the circular seat, and the positioning column is inserted into the through hole.

As a preferred embodiment of the present invention, a rubber ring is embedded in an inner side wall of the U-shaped groove, and the rubber ring is sleeved on an outer side wall of the support column.

As a preferred embodiment of the present invention, the 1S: pouring concrete bottom piles: firstly, a foundation is compacted at the bottom of a riverbed, and concrete bottom piles are poured on the foundation;

2S: installing a first-level bearing platform: assembling each support frame, the reinforcing frame and the fixing frame according to the corresponding positions;

3S: installing a secondary bearing platform: after the secondary bearing platform is installed and fixed, all parts are installed on the bearing plate;

4S: installing a supporting device: installing an arch plate and a main framework on the top of the bearing plate;

5S: installing an arch device: and (4) installing the arch device at the top of the supporting device, and pouring concrete after the installation is finished.

Compared with the prior art, the invention has the following beneficial effects:

1. concrete foundation pile has been pour through the bottom at the riverbed, and the support column is on concatenation and the concrete foundation pile, and carry on spacingly to its support column with dead lever and gag lever post, the use of concrete foundation pile can provide a firm strong point for one-level cushion cap and second grade cushion cap, with convenient pouring of arched bridge, can also pour the convenient equipment of accomplishing back and dismantle at the arched bridge, and concrete foundation pile can not cause the influence to the velocity of flow of past ship and rivers under the surface of water, thereby very big improvement the security of construction.

2. Through installing strutting arrangement on the loading board, arch plate and main frame among the strutting arrangement use with circular seat and hydraulic pump cooperation, main frame can outwards expand along the arch plate under circular seat and the effect of hydraulic pump, quick completion is to the location of bottom plate to very big improvement the installation rate of equipment.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a cast-in-place arch bridge combined support structure and a construction method thereof according to the present invention;

FIG. 2 is a side view of an arch device of a cast-in-place arch bridge combined support structure and a construction method thereof according to the present invention;

FIG. 3 is a top view of a concrete bottom pile of the cast-in-place arch bridge combined support structure and the construction method thereof according to the present invention;

fig. 4 is a view of the interior of a circular seat of a cast-in-place arch bridge combined support structure and a construction method thereof.

In the figure: 100. a first stage bearing platform; 110. concrete bottom piles; 111. a U-shaped groove; 112. a bump; 113. a rubber ring; 120. a support pillar; 130. a reinforcement device; 131. a transverse plate; 132. a reinforcing bar; 133. reinforcing the connecting seat; 140. fixing the rod; 141. fixing the connecting seat; 142. a reinforcing buckle; 200. a pile foundation; 210. a limiting rod; 220. a limiting connecting seat; 300. a secondary bearing platform; 310. a reinforcement device; 311. a longitudinal steel plate; 312. a sub-skeleton; 320. a circular seat; 330. a carrier plate; 331. a positioning column; 340. a hydraulic pump; 400. an arch-shaped device; 410. a first side plate; 420. a second side plate; 430. a base plate; 440. a reinforcement; 500. a support device; 510. an arch plate; 511. a fastener; 520. a main framework; 521. and (3) a steel plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a cast-in-place arch bridge combined support structure and a construction method thereof comprise a first-stage bearing platform 100, a pile foundation 200, a second-stage bearing platform 300, an arch device 400 and a supporting device 500, wherein the first-stage bearing platform 100 comprises a concrete bottom pile 110, a supporting column 120, a reinforcing device 130 and fixing rods 140, the top of the concrete bottom pile 110 is provided with a U-shaped groove 111, the bottom of an inner cavity of the U-shaped groove 111 is inserted with a convex block 112, the supporting column 120 is inserted at the top of the concrete bottom pile 110, the supporting column 120 is fixedly connected with the concrete bottom pile 110 through the reinforcing device 130, adjacent supporting columns 120 are connected through the two fixing rods 140, two ends of the fixing rods 140 are respectively connected with the supporting column 120 through fixing connecting seats 141, the two pile foundations 200 are distributed at two sides of the first-stage bearing platform 100, a limiting rod 210 is arranged between the pile foundation 200 and the supporting column 120, two ends of the limiting rod 210 are respectively connected with the pile foundation 200 and the supporting column 120 through the limiting connecting seats 220, the secondary bearing platform 300 is located on the top of the primary bearing platform 100, the secondary bearing platform 300 comprises two reinforcing devices 310, a circular seat 320, a bearing plate 330 and a hydraulic pump 340, the two reinforcing devices 310 are respectively located on two sides of the bearing plate 330, the reinforcing devices 310 comprise a longitudinal steel plate 311 and an auxiliary framework 312, the longitudinal steel plate 311 is connected with the bearing plate 330 through bolts, the auxiliary framework 312 penetrates through the longitudinal steel plate 311 to be in contact with the arch-shaped device 400, the hydraulic pump 340 is embedded on the top of the bearing plate 330, the circular seat 320 is inserted on the top of the hydraulic pump 340, two ends of the arch-shaped device 400 are respectively located on the top of the pile foundation 200, the arch-shaped device 400 comprises a first side plate 410, a second side plate 420 and a bottom plate 430, the first side plate 410, the second side plate 420 and the bottom plate 430 are spliced to form a U-shaped structure, the supporting device 500 is located on the upper portion of the bearing plate 330, the supporting device 500 comprises an arch-shaped plate 510 and a main framework 520, two ends of the arch-shaped plate 510 are respectively fixed on the top of the bearing plate 330 through bolts, the main frame 520 penetrates the inside of the dome plate 510, and the top of the main frame 520 is in contact with the bottom plate 430 and the bottom of the main frame 520 is in contact with the circular seat 320.

According to the invention, after all parts are spliced into a whole, the hydraulic pump 340 is operated, the hydraulic pump 340 moves upwards, the hydraulic pump 340 drives the circular seat 320 to move upwards, the circular seat 320 extrudes the main framework 520, so that the main framework 520 supports the bottom of the bottom plate 430 in a contact manner, the auxiliary framework 312 also contacts with the side edge of the bottom plate 430 to support the bottom plate 430, the first side plate 410, the second side plate 420 and the bottom plate 430 form a cavity for pouring a bridge body, and concrete is poured into the cavity and solidified to form the bridge body.

In an alternative embodiment, the reinforcing apparatus 130 includes a transverse plate 131, a reinforcing rod 132 and a reinforcing connecting seat 133, the transverse plate 131 is fixed to the outer sidewall of the concrete bottom pile 110 by bolts, and both ends of the reinforcing rod 132 are connected to the top of the transverse plate 131 and the outer sidewall of the supporting column 120 by the reinforcing connecting seat 133, respectively.

It should be noted that three reinforcing devices 130 are used on the outer side of each concrete bottom pile 110, and the support column 120 is firmly connected to the concrete bottom pile 110 by using the reinforcing rods 132 to ensure the stability of the support column 120 in the vertical direction.

In an alternative embodiment, a reinforcing button 142 is sleeved at the intersection of two fixing rods 140.

It should be noted that the supporting columns 120 are integrally connected to each other for fixing the fixing rods 140 and keeping the angle between the two fixing rods 140 unchanged.

In an alternative embodiment, the first side plate 410 and the bottom plate 430 are connected by a stiffener 440, and the second side plate 420 and the bottom plate 430 are connected by a stiffener 440.

It should be noted that the connecting strength between the second side plate 420 and the first side plate 410 and the bottom plate 430 is improved.

In an alternative embodiment, a steel plate 521 is fixed to the top of the main frame 520 by bolts, and the steel plate 521 contacts the bottom of the bottom plate 430.

It should be noted that the contact area between the main frame 520 and the bottom plate 430 is increased to prevent the bottom plate 430 from being deformed by the main frame 520.

In an alternative embodiment, fasteners 511 are threaded on the exterior side walls of dome plate 510, and fasteners 511 extend through dome plate 510 to contact the exterior side walls of main frame 520.

It should be noted that, after the main frame 520 is pressed by the circular seat 320, the top of the main frame 520 contacts with the bottom of the bottom plate 430, and the fastener 511 is used for limiting the position of the main frame 520 after moving.

In an alternative embodiment, the top of the bearing plate 330 is welded with a positioning column 331, the bottom of the circular base 320 is provided with a through hole, and the positioning column 331 is inserted into the through hole.

It should be noted that the limiting device is used for limiting the moving position of the circular seat 320, so as to prevent the circular seat 320 from shifting in the up-and-down moving process, and further, the structure of the bridge body is changed.

In an alternative embodiment, a rubber ring 113 is embedded in the inner side wall of the U-shaped groove 111, and the rubber ring 113 is sleeved on the outer side wall of the supporting column 120.

It should be noted that the corrosion of the bottom of the supporting column 120 is caused in order to prevent water flowing in the river bed from flowing into the U-shaped groove 111 through the gap between the supporting column 120 and the concrete bottom pile 110.

1S: pouring concrete bottom piles: firstly, a foundation is compacted at the bottom of a riverbed, and concrete bottom piles are poured on the foundation;

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a cast-in-place arched bridge sectional shelf structure and construction method thereof, includes one-level cushion cap (100), pile foundation (200), second grade cushion cap (300), arch device (400) and strutting arrangement (500), its characterized in that: the first-stage bearing platform (100) comprises a concrete bottom pile (110), a supporting column (120), a reinforcing device (130) and fixing rods (140), a U-shaped groove (111) is formed in the top of the concrete bottom pile (110), a convex block (112) is inserted into the bottom of an inner cavity of the U-shaped groove (111), the supporting column (120) is inserted into the top of the concrete bottom pile (110), the supporting column (120) is fixedly connected with the concrete bottom pile (110) through the reinforcing device (130), the adjacent supporting columns (120) are connected through the two fixing rods (140), two ends of each fixing rod (140) are respectively connected with the corresponding supporting column (120) through fixing connecting seats (141), the two supporting rods (200) are distributed on two sides of the first-stage bearing platform (100), and a limiting rod (210) is installed between the corresponding supporting column (120) and the pile foundation (200), the two ends of the limiting rod (210) are respectively connected with the pile foundation (200) and the supporting column (120) through limiting connecting seats (220), the secondary bearing platform (300) is located at the top of the primary bearing platform (100), the secondary bearing platform (300) comprises two reinforcing devices (310), a circular seat (320), a bearing plate (330) and a hydraulic pump (340), the two reinforcing devices (310) are respectively located on two sides of the bearing plate (330), each reinforcing device (310) comprises a longitudinal steel plate (311) and an auxiliary framework (312), the longitudinal steel plate (311) is connected with the bearing plate (330) through bolts, the auxiliary framework (312) penetrates through the longitudinal steel plate (311) to be in contact with the arch-shaped device (400), the hydraulic pump (340) is embedded at the top of the bearing plate (330), and the circular seat (320) is inserted at the top of the hydraulic pump (340), the both ends of arched device (400) are located respectively the top of pile foundation (200), arched device (400) include first curb plate (410), second curb plate (420) and bottom plate (430), first curb plate (410) with second curb plate (420) with bottom plate (430) splice into U type structure, strutting arrangement (500) are located the upper portion of loading board (330), strutting arrangement (500) are including arched plate (510) and main skeleton (520), the both ends of arched plate (510) are respectively through the bolt fastening in the top of loading board (330), main skeleton (520) run through the inside of arched plate (510), and the top of main skeleton (520) with bottom plate (430) contact, the bottom of main skeleton (520) with circular seat (320) contact.

2. A cast-in-place arch bridge sectional shelf structure as defined in claim 1, wherein: the reinforcing device (130) comprises a transverse plate (131), a reinforcing rod (132) and a reinforcing connecting seat (133), the plate (131) is fixed on the outer side wall of the concrete bottom pile (110) through bolts, and two ends of the reinforcing rod (132) are connected with the top of the transverse plate (131) and the outer side wall of the supporting column (120) through the reinforcing connecting seat (133) respectively.

3. A cast-in-place arch bridge sectional shelf structure as defined in claim 1, wherein: and a reinforcing buckle (142) is sleeved at the intersection of the two fixing rods (140).

4. A cast-in-place arch bridge sectional shelf structure as defined in claim 1, wherein: the first side plate (410) and the bottom plate (430) are connected with each other, and the second side plate (420) and the bottom plate (430) are connected through a reinforcing member (440).

5. A cast-in-place arch bridge sectional shelf structure as defined in claim 1, wherein: the top of the main framework (520) is fixed with a steel plate (521) through bolts, and the steel plate (521) is in contact with the bottom of the bottom plate (430).

6. A cast-in-place arch bridge sectional shelf structure as claimed in claim 2, wherein: the outer side wall of the arch plate (510) is in threaded connection with a fastener (511), and the fastener (511) penetrates through the arch plate (510) to be in contact with the outer side wall of the main framework (520).

7. A cast-in-place arch bridge sectional shelf structure as defined in claim 1, wherein: the top welding of loading board (330) has reference column (331), open the bottom of circular seat (320) has the through-hole, reference column (331) with the through-hole grafting.

8. A cast-in-place arch bridge sectional shelf structure as defined in claim 1, wherein: the inside wall in U type groove (111) is inlayed and is had rubber circle (113), rubber circle (113) cup joint in the lateral wall of support column (120).

9. The construction method of the cast-in-place arch bridge combined support structure according to claim 1, characterized in that: the above-mentioned