CN113338165B - Cast-in-place arch bridge combined support structure and construction method thereof - Google Patents
Cast-in-place arch bridge combined support structure and construction method thereof Download PDFInfo
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- CN113338165B CN113338165B CN202110651916.3A CN202110651916A CN113338165B CN 113338165 B CN113338165 B CN 113338165B CN 202110651916 A CN202110651916 A CN 202110651916A CN 113338165 B CN113338165 B CN 113338165B
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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
- E01D4/00—Arch-type bridges
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Abstract
The invention discloses a cast-in-place arch bridge combined support structure which comprises a first-stage bearing platform, a pile foundation, a second-stage bearing platform, an arch device and a supporting device, wherein the first-stage bearing platform comprises a concrete bottom pile, a supporting column, a reinforcing device and a fixing rod, a U-shaped groove is formed in the top of the concrete bottom pile, a convex block is inserted into the bottom of an inner cavity of the U-shaped groove, and the supporting column is inserted into the top of the concrete bottom pile. 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
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 art.
In order to achieve the purpose, the invention provides the following technical scheme: a cast-in-place arch bridge combined support structure comprises a first-stage bearing platform, a pile foundation, a second-stage bearing platform, an arch device and a supporting device, wherein the first-stage bearing platform comprises a concrete bottom pile, supporting columns, a reinforcing device and fixing rods, a U-shaped groove is formed in the top of the concrete bottom pile, a protruding block is inserted into the bottom of an inner cavity of the U-shaped groove, the supporting columns are inserted into the top of the concrete bottom pile, the supporting columns are fixedly connected with the concrete bottom pile through the reinforcing device, 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, each reinforcing device comprises a transverse plate, a reinforcing rod and a reinforcing connecting seat, the transverse plates are fixed on the outer side wall of the concrete bottom pile through bolts, and two ends of each reinforcing rod are respectively connected with the top of the transverse plate and the outer side wall of the corresponding supporting column through the reinforcing connecting seats; the two pile foundations are distributed on two sides of the primary bearing platform, a limiting rod is installed between each pile foundation and the corresponding supporting column, and two ends of each limiting rod are connected with the corresponding pile foundation and the corresponding supporting column through limiting connecting seats respectively; the secondary bearing platform is positioned at the top of the primary 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, each reinforcing device comprises 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 in contact with the arched devices, the hydraulic pump is embedded at the top of the bearing plate, and the circular seat is inserted at the top of the hydraulic pump; the two ends of the arch device are respectively positioned at the top of the pile foundation, the arch device comprises a first side plate, a second side plate and a bottom plate, and the first side plate, the second side plate and the bottom plate are spliced into a U-shaped structure; the utility model discloses a bearing device for bearing device, including bearing plate, circular seat, arch-shaped plate, fastener, main skeleton, bottom plate, circular seat, strutting arrangement is located the upper portion of loading board, strutting arrangement includes arch-shaped plate and main skeleton, the both ends of arch-shaped plate are fixed in through the bolt respectively the top of loading board, the lateral wall spiro union of arch-shaped plate has the fastener, the fastener runs through the arch-shaped plate with the lateral wall contact of main skeleton, main skeleton runs through the inside of arch-shaped 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, 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.
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 inlaid in the inner side wall of the U-shaped groove, and the rubber ring is sleeved on the outer side wall of the supporting pillar.
As a preferred embodiment of the present invention, the casting step is as follows:
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 supporting device, each reinforcing device and each reinforcing device 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 skeleton among the strutting arrangement use with circular seat and hydraulic pump cooperation, and main skeleton can outwards expand along the arch plate under circular seat and the effect of hydraulic pump, and 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 according to the present invention;
FIG. 2 is a side view of an arch apparatus of a cast-in-place arch bridge composite support structure according to the present invention;
FIG. 3 is a top view of a concrete bottom pile of a cast-in-place arch bridge composite support structure according to the present invention;
fig. 4 is an internal view of a circular seat of the combined support structure of the cast-in-place arch bridge of the invention.
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 rod; 133. reinforcing the connecting seat; 140. a fixing rod; 141. a fixed connecting seat; 142. reinforcing buckles; 200. a pile foundation; 210. a limiting rod; 220. a limiting connecting seat; 300. a secondary bearing platform; 310. a reinforcing device; 311. a longitudinal steel plate; 312. a sub-skeleton; 320. a circular seat; 330. carrying a 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 skeleton; 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, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to 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 bracket structure comprises a first-stage bearing platform 100, a pile foundation 200, a second-stage bearing platform 300, arch devices 400 and a supporting device 500, wherein the first-stage bearing platform 100 comprises concrete bottom piles 110, supporting columns 120, reinforcing devices 130 and fixing rods 140, the tops of the concrete bottom piles 110 are provided with U-shaped grooves 111, the bottoms of inner cavities of the U-shaped grooves 111 are inserted with bumps 112, the supporting columns 120 are inserted at the tops of the concrete bottom piles 110, the supporting columns 120 are fixedly connected with the concrete bottom piles 110 through the reinforcing devices 130, adjacent supporting columns 120 are connected through two fixing rods 140, two ends of each fixing rod 140 are respectively connected with the supporting columns 120 through fixing connecting seats 141, each reinforcing device 130 comprises a transverse plate 131, a reinforcing rod 132 and a reinforcing connecting seat 133, the transverse plate 131 is fixed on the outer side wall of each concrete bottom pile 110 through bolts, two ends of each reinforcing rod 132 are respectively connected with the tops of the transverse plates 131 and the outer side walls of the supporting columns 120 through the reinforcing connecting seats 133, and the outer side walls of each concrete bottom pile 110 are firmly connected with the corresponding supporting columns 120 through the reinforcing rods 132 to ensure that the supporting columns 110 are stably connected in the vertical direction;
the two pile foundations 200 are distributed on two sides of the first-stage bearing platform 100, a limiting rod 210 is installed between the pile foundations 200 and the supporting columns 120, and two ends of the limiting rod 210 are connected with the pile foundations 200 and the supporting columns 120 through limiting connecting seats 220 respectively;
the secondary bearing platform 300 is located at the top of the primary bearing platform 100, the secondary bearing platform 300 includes 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 at two sides of the bearing plate 330, the reinforcing device 310 includes a longitudinal steel plate 311 and a sub-frame 312, the longitudinal steel plate 311 is connected with the bearing plate 330 through bolts, the sub-frame 312 penetrates through the longitudinal steel plate 311 to be in contact with the arch 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 two ends of the arch device 400 are respectively located at the top of the pile foundation 200, the arch device 400 comprises a first side plate 410, a second side plate 420 and a bottom plate 430, and the first side plate 410, the second side plate 420 and the bottom plate 430 are spliced to form a U-shaped structure;
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 contacts and supports the bottom of the bottom plate 430, 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 the concrete is poured into the cavity and solidified to form the bridge body.
In an alternative embodiment, a reinforcing clasp 142 is sleeved at the intersection of two fixation 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 panel 410 is connected to the bottom panel 430 and the second side panel 420 is connected to the bottom panel 430 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 pressing of the main frame 520.
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 water used for preventing the water flowing in the river bed flows into the U-shaped groove 111 through the gap between the support column 120 and the concrete bottom pile 110 to cause the corrosion of the bottom of the support column 120.
The pouring steps are as follows:
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 supporting device, each reinforcing device and each reinforcing device 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.
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 specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (7)
1. The utility model provides a cast-in-place arched bridge sectional shelf structure, 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 primary bearing platform (100) comprises a concrete bottom pile (110), a supporting column (120), a reinforcing device (130) and fixing rods (140), wherein 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), adjacent supporting columns (120) are connected through the two fixing rods (140), two ends of each fixing rod (140) are respectively connected with the supporting column (120) through fixing connecting seats (141), the reinforcing device (130) comprises a transverse plate (131), a reinforcing rod (132) and a reinforcing connecting seat (133), the transverse plate (131) is fixed on the outer side wall of the concrete bottom pile (110) through bolts, and two ends of each reinforcing rod (132) are respectively connected with the top of the transverse plate (131) and the outer side wall of the supporting column (120) through the reinforcing connecting seats (133);
the two pile foundations (200) are distributed on two sides of the first-stage bearing platform (100), a limiting rod (210) is installed between each pile foundation (200) and each supporting column (120), and two ends of each limiting rod (210) are connected with the pile foundations (200) and the supporting columns (120) through limiting connecting seats (220) respectively;
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 a bolt, the auxiliary framework (312) penetrates through the longitudinal steel plate (311) and is in contact with the arched 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 two ends of the arch device (400) are respectively positioned at the top of the pile foundation (200), the arch device (400) comprises a first side plate (410), a second side plate (420) and a bottom plate (430), and the first side plate (410), the second side plate (420) and the bottom plate (430) are spliced to form a U-shaped 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 fixed in through the bolt respectively the top of loading board (330), the lateral wall spiro union of arched plate (510) has fastener (511), fastener (511) run through arched plate (510) with the lateral wall contact of main skeleton (520), 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: and a reinforcing buckle (142) is sleeved at the intersection of the two fixing rods (140).
3. 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).
4. 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).
5. 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.
6. 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).
7. A construction method of a cast-in-place arch bridge combined support structure according to claim 1, characterized in that: the pouring steps are as follows:
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 the supporting devices (500), the reinforcing devices (130) and the reinforcing devices (310) according to 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 (330);
4S: installing a supporting device: installing an arch plate (510) and a main framework (520) on the top of a bearing plate (330);
5S: installing an arch device: the arch device (400) is arranged on the top of the supporting device (500), and concrete is poured after the arch device is arranged.
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| BR9403165A (en) * | 1994-08-04 | 1996-04-02 | Vidal Henri Brevets | Molding process of concrete semi-arches to be connected to each other by juxtaposition in the construction of arch structures and equipment to perform the aforementioned molding |
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