CN211171563U - Tunnel arch bridge convenient to quick construction - Google Patents
Tunnel arch bridge convenient to quick construction Download PDFInfo
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- CN211171563U CN211171563U CN201922068910.4U CN201922068910U CN211171563U CN 211171563 U CN211171563 U CN 211171563U CN 201922068910 U CN201922068910 U CN 201922068910U CN 211171563 U CN211171563 U CN 211171563U
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Abstract
The utility model relates to the technical field of bridge engineering, in particular to an arch bridge between tunnels convenient for rapid construction, which adopts a component which can be disassembled into an independent component which is convenient for transportation and has a regular structure, when the construction access road can not reach the bridge site, the transportation from the tunnel with limited height and width to the hoisting position is convenient, a large-scale hoisting device is not needed, the method is suitable for canyon areas in which the construction access road is difficult to construct, meanwhile, the arch rib adopts a steel pipe concrete structure, the bridge deck adopts a corrugated steel-concrete combined bridge deck, all need not additionally to set up the template when concreting, effectively reduce formwork expense, improve the efficiency of construction, shorten construction cycle, utilize and carry out the quick construction of bridge between the tunnel during the tunnel construction, avoid the bridge between the tunnel often to become full line control nature engineering, have the great meaning to the bridge construction between the tunnel in deep-cut canyon area.
Description
Technical Field
The utility model relates to a bridge engineering technical field, in particular to arch bridge between tunnel convenient to quick construction.
Background
In the deep-cut canyon region of mountain area, the both sides topography is precipitous, adopts simple beam bridge structure comparatively economy, nevertheless because deep-cut canyon region topography is precipitous, is difficult to construct the construction pavement, and material, mechanical equipment can't transport the bridge site, leads to substructure such as pile foundation, pier stud of simple beam can't be under construction, and the place of hardly finding precast beam because of the place restriction simultaneously. Therefore, the construction of the simply supported beam bridge in the environment has a plurality of difficulties and is difficult to implement.
At present, for a tunnel bridge with medium and small span (span is below 60 m) of a deep-cut canyon, a single-span steel box simply-supported beam is adopted, the steel box beam is transported to a cave entrance through a tunnel with two sides opened, and construction is carried out in a pushing mode, but when the width of the bridge is larger than that of the tunnel, the steel box beam needs to be manufactured in a split manner and pushed in a split manner, the pushing construction is difficult per se, and the construction period cannot be guaranteed; in the bridge with the span of more than 60m, if the steel box girder is still adopted, the height of the girder or the wall thickness of a plate needs to be increased, and if the steel truss girder bridge is adopted, the girder height is higher, the girder needs to be layered and pushed to be installed in the height direction, so that the construction difficulty can be further increased.
In the prior art, for the bridge between tunnels constructed in the deep-cut canyon with the span of 60-150m, in order to ensure the structure spanning capability, a conventional arch bridge structure system is adopted at home and abroad, but in the deep-cut canyon region which is difficult to construct on a construction sidewalk, the construction difficulty is increased suddenly, the construction period is delayed seriously, and the construction period of the tunnel is longer, so that the bridge between tunnels is often used as a full-line control project to influence the full-line completion vehicle-completing time limit. Therefore, an arch bridge between deep-cut canyon tunnels, which is convenient to construct and can shorten the construction period, is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome among the prior art deep-cut canyon's the tunnel bridge construction degree of difficulty big, the construction cycle long, rely on both sides tunnel to link up and provide the construction pavement, influence the whole line and link up the time limit, construction safety risk greatly etc. above-mentioned not enough, provide a tunnel arch bridge convenient to construct fast.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides an arched bridge between tunnel convenient to quick construction contains the owner and encircles, connect in stull, steel crossbeam, jib and decking between the main arch rib, the arch rib contains the steel pipe, it has the concrete to fill in the steel pipe, stull and steel crossbeam are all along the stull to setting up, jib one end connect in arch rib, the other end connect in steel crossbeam, every the both ends of steel crossbeam correspond respectively and connect one the jib, the decking contains wave folding steel sheet and concrete, wave folding steel sheet connect in steel crossbeam.
The arch bridge is of a through type or a half-through type.
The arch bridge between tunnels convenient for rapid construction, which is provided by the utility model, is characterized in that the crossbars, the steel beams, the suspenders and the steel pipes are linear regular components, the steel pipes can contain a plurality of segments, the corrugated steel plates are plate-shaped components, namely, all parts forming the arch bridge can be disassembled into independent components convenient for transportation and regular structure, the components are convenient for transportation to a lifting position from the tunnels with limited height and width, large-scale lifting setting is not needed, the arch bridge deck is suitable for the gorge areas with difficult construction and convenient access, the bridge deck is composed of the steel beams and corrugated steel-concrete composite bridge decks thereon, the integrity of the bridge deck can be effectively ensured, because the corrugated steel plates can play the role of being the longitudinal beams for continuous components, the problem that the lattice beams can not be transported through the tunnels is avoided, simultaneously, the arch ribs adopt steel pipe concrete structures, and the bridge decks adopt the corrugated steel-concrete composite bridge decks, all need not additionally to set up the template when concreting, avoid the template transportation, effectively reduce formwork expense, improve the efficiency of construction, shorten construction cycle, utilize the tunnel construction period to carry out the quick construction of bridge between the tunnel, avoid bridge between the tunnel often to become full line control nature engineering, have great meaning to the bridge construction between the tunnel in deep-cut gorge area.
Preferably, the corrugated extending direction of the corrugated steel plate is arranged along the transverse bridge direction.
Preferably, the bridge deck further comprises end seal plates, two ends of the corrugated steel plate are welded to the end seal plates, and the end seal plates are welded to the top surfaces of the steel beams.
Preferably, the corrugated steel plate is welded and connected with a shear key, a steel plate with holes or a transverse steel bar.
Preferably, the steel beam is an I-beam, and the hanger rod is an epoxy sprayed steel strand.
Preferably, the arch rib is of a single-round-tube concrete-filled steel tube structure or a dumbbell-shaped steel tube concrete structure.
The construction method of the tunnel arch bridge convenient for rapid construction adopts the tunnel arch bridge convenient for rapid construction, and comprises the following steps:
a. processing a cross brace, a steel cross beam, a suspender, a steel pipe and a corrugated steel plate, and constructing a rock anchor above the bridge position;
b. after the tunnel is communicated, constructing an arch center, and installing a cable and a buckling cable on the rock anchors at two banks to form a cable hoisting system;
c. the steel pipes are respectively and sequentially symmetrically lifted to installation positions from tunnel portals on two banks for positioning and connection through the cable hoisting system until the arch ribs are closed, then the cross brace is installed between the two arch ribs, and concrete is poured into the steel pipes;
d. the hanger rods are respectively and sequentially symmetrically lifted to installation positions from tunnel portals on two banks through the cable hoisting system, and the upper ends of the corresponding hanger rods are connected with the corresponding arch ribs;
e. the steel cross beams are respectively and sequentially symmetrically lifted to installation positions from tunnel portals on two banks through the cable hoisting system, and two ends of the corresponding steel cross beams are respectively connected with the corresponding suspenders;
f. the corrugated steel plates are respectively and sequentially symmetrically lifted to installation positions from tunnel portals on two banks through the cable lifting system, the corrugated steel plates are connected with the corresponding steel cross beams, bridge deck reinforcing steel bars are bound, and the corrugated steel plates are used as templates to pour bridge deck concrete;
g. and installing a bridge deck auxiliary structure to complete the construction of the arch bridge between tunnels.
By adopting the construction method of the tunnel arch bridge convenient for rapid construction, before the tunnel is communicated, the rock anchor is constructed, and each structural member of the arch bridge is processed, the arch rib adopts a steel pipe concrete structure, after each section is sequentially assembled and folded, concrete is poured into the tube, a template of the concrete is not required to be installed, the bridge deck adopts a corrugated steel-concrete combined bridge deck, a corrugated steel plate can be used as the template of the bridge deck concrete, no additional template is required to be erected, the construction difficulty and the safety risk are effectively reduced, a cable hoisting system is installed after the tunnel is communicated, and the prefabricated member is transported to the entrance to the cave through the tunnel to hoist, so that the rapid transportation is convenient, the method adopts the fully-assembled prefabricated member for installation, no additional template is required to be erected, the cost is effectively saved, the construction period is shortened, the construction difficulty and the safety risk are reduced, the site restriction influence of the special terrains of the deep-cut gorge is reduced, the spanning capability of the bridge with the long span is effectively guaranteed, the economy is good, the requirement of rapid construction of the bridge between tunnels is met, the difficulty in constructing the temporary road for bridge construction between deep-cut canyon tunnels is fully solved, and therefore the problem that the construction time of the bridge between tunnels is short is solved.
Preferably, the step a is performed simultaneously with the tunnel construction.
To sum up, compare with prior art, the beneficial effects of the utility model are that:
1. adopt an arch bridge between tunnel convenient to quick construction, adopt can disassemble into independent, be convenient for transport, the component of structural rule constitutes the arch bridge, be convenient for from the height, the width is all restricted tunnel in transport to lifting by crane the position, also need not to use large-scale hoist and mount setting, be applicable to the canyon area that is difficult to construct the construction relief, and simultaneously, the arch rib adopts steel pipe concrete structure, the decking adopts corrugated steel-concrete combination decking, all need not additionally to set up the template when concreting, avoid the template transportation, effectively reduce formwork expense, the efficiency of construction is improved, shorten construction cycle, utilize the quick construction of carrying out the bridge between the tunnel during the tunnel construction, avoid the bridge between the tunnel often to become full-line control nature engineering, the bridge construction between the deep cutting canyon area has great meaning.
2. Adopt a construction method of arch bridge between tunnel convenient to quick construction, the prefab that adopts the complete set-up to change installs, need not additionally to set up the template, effectively save the cost, reduction of erection time, reduce the construction degree of difficulty and safe risk, reduce the place restriction influence of the special topography of deep-cut gorge, effectively guarantee the leap ability of the bridge of long span, economic nature is good, satisfy the requirement that the bridge was built fast between the tunnel, the bridge construction convenience road construction difficulty between the deep-cut gorge tunnel has fully been solved, thereby solve the problem that bridge construction time is short between can supplying the tunnel.
Description of the drawings:
fig. 1 is a structural elevation view of an arch bridge between tunnels for facilitating rapid construction according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is a bridge deck layout view of the arch bridge between tunnels according to the present invention;
fig. 4 is a schematic structural view of a bridge deck of an arch bridge between tunnels according to the present invention;
fig. 5 is a schematic view of the hoisting process of the cable hoisting system of the present invention.
The labels in the figure are: 1-cross brace, 2-steel beam, 3-suspender, 4-bridge deck, 5-steel pipe, 6-corrugated steel plate, 7-arch support and 8-shear bond.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter is limited to the following embodiments, and all the technologies realized based on the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-4, the arch bridge between tunnels convenient for rapid construction according to the present invention is of a through type or a through type, and the present embodiment only shows the through type, and comprises a main arch, a cross brace 1 connected between ribs of the main arch, a steel beam 2, a suspender 3, and a bridge deck 4, wherein the steel beam 2 is an i-beam, the suspender 3 is an epoxy-coated steel strand, i.e. a flexible suspender, and is suitable for a use situation with a large wind load in the valley terrain, the arch rib comprises a steel tube 5, the steel tube 5 is filled with concrete, the arch rib is a single-tube steel tube concrete structure or a dumbbell-shaped steel tube concrete structure, the cross brace 1 and the steel beam 2 are both arranged along the through direction, one end of the suspender 3 is connected to the arch rib, the other end of the suspender is connected to the steel beam 2, i.e. the upper end of the suspender 3 is anchored at the upper edge of the main arch, and the lower end of the suspender is anchored, every the both ends of steel beam 2 correspond respectively and connect one jib 3, decking 4 contains end shrouding, ripple steel sheet 6 and concrete, the both ends of ripple steel sheet 6 weld in on the end shrouding, the end shrouding weld in 2 top surfaces of steel beam, welded connection shear force key 8 or foraminiferous steel sheet or horizontal reinforcing bar on the ripple steel sheet 6, this embodiment only the example is connected with shear force key 8, the ripple of ripple steel sheet 6 extends the direction and sets up to the cross bridge along the wave.
By adopting the tunnel arch bridge convenient for rapid construction, the cross brace 1, the steel beam 2, the suspender 3 and the steel pipe 5 are linear components, the steel pipe 5 can contain a plurality of segments, the corrugated steel plate 6 is a plate-shaped component, namely, each part forming the arch bridge can be disassembled into independent components which are convenient to transport and have regular structure, the components are convenient to transport to a lifting position from a tunnel with limited height and width, a large-scale lifting device is not required, the bridge arch bridge is suitable for a gorge area which is difficult to construct a construction access road, simultaneously, the arch rib adopts a steel pipe concrete structure, the bridge panel adopts a corrugated steel-concrete combined bridge panel, no additional template is required to be erected when concrete is poured, the transportation of the template is avoided, the cost of formwork support is effectively reduced, the construction efficiency is improved, the construction period is shortened, the construction access road is not required to be constructed, the bridge between is prevented from becoming a full-line control project, the method has great significance for the construction of the bridge between tunnels in the deep-cut canyon region.
The construction method of the tunnel arch bridge convenient for rapid construction in embodiment 1 includes the following steps:
a. processing a cross brace 1, a steel beam 2, a suspender 3, a steel pipe 5 and a corrugated steel plate 6, and constructing a rock anchor above a bridge site;
b. after the tunnel is communicated, constructing an arch center 7, and installing a cable and a buckling cable on the rock anchors at two banks to form a cable hoisting system;
c. the steel pipes 5 are respectively and sequentially symmetrically lifted to installation positions from tunnel portals on two banks for positioning and connection through the cable hoisting system until the arch ribs are closed, then the cross braces 1 are installed between the two arch ribs, and concrete is poured into the steel pipes 5;
d. the suspension rods 3 are respectively and sequentially symmetrically lifted to installation positions from tunnel portals on two banks through the cable hoisting system, and the upper ends of the corresponding suspension rods 3 are connected with the corresponding arch ribs;
e. the steel cross beams 2 are respectively and sequentially symmetrically lifted to installation positions from tunnel portals on two banks through the cable hoisting system, and two ends of the corresponding steel cross beams 2 are respectively connected with the corresponding suspenders 3;
f. the corrugated steel plates 6 are respectively and sequentially symmetrically lifted to installation positions from tunnel portals at two banks through the cable hoisting system, the corrugated steel plates 6 are connected with the corresponding steel cross beams 2, bridge deck reinforcing steel bars are bound, and bridge deck concrete is poured by using the corrugated steel plates 6 as templates;
g. and installing a bridge deck auxiliary structure to complete the construction of the arch bridge between tunnels.
Specifically, firstly, during tunnel construction, rock anchor construction and processing of all structural parts of the arch bridge are simultaneously carried out, wherein the structural parts comprise a cross brace 1, a steel beam 2, a suspender 3, an arch rib steel pipe 5 and a corrugated steel plate 6, a shear key 8 is welded on the corrugated steel plate 6, and the work and the tunnel excavation are synchronously carried out.
After the tunnel is communicated, a foundation pit of an arch support (abutment) is synchronously excavated, arch support reinforcing steel bars are bound, an embedded arch leg section is installed, then arch support concrete is poured, the construction of the arch support 7 is completed, cables and buckling cables are installed on rock anchors on two banks to form a cable hoisting system, then the steel pipes 5 are respectively transported to the corresponding tunnel portal through the tunnels on the two banks so as to be hoisted for use, and other prefabricated components are transported in place before hoisting.
And then, constructing an arch bridge main body, as shown in fig. 5, symmetrically hoisting the steel pipes 5 from tunnel portals on two banks to installation positions through the cable hoisting system, sequentially hoisting the steel pipes 5 on two sides to the installation positions according to sections for positioning and connection until the arch ribs are closed, then installing the cross braces 1 between the two arch ribs, then pouring concrete into the steel pipes 5, and installing the hanger rods 3 after the strength is reached.
The hanger rods 3 are hoisted by the cable hoisting system, and are respectively and sequentially hoisted to installation positions from tunnel portals on two sides symmetrically, and then the upper ends of the hanger rods 3 are connected with the corresponding arch ribs, so that the installation of all the hanger rods 3 is completed.
And the steel cross beams 2 are respectively and sequentially symmetrically lifted to the mounting positions from the tunnel portals at two banks through the cable hoisting system, and the two ends of the corresponding steel cross beams 2 are respectively connected with the lower ends of the corresponding suspenders 3.
6 both ends of wave-folded steel sheet are welded connection end shrouding respectively, the wave-folded extending direction of wave-folded steel sheet 6 is along the transverse bridge to setting up, then passes through cable hoist system lifts by crane wave-folded steel sheet 6 to the mounted position from the tunnel entrance to a cave of both sides respectively in proper order, also the symmetry lifts by crane, will wave-folded steel sheet 6 both ends the end shrouding correspond weld in on 2 top surfaces of steel crossbeam, ligature bridge floor reinforcing bar again, utilize wave-folded steel sheet 6 and end shrouding pour the bridge floor concrete as the template, need not additionally to install the template.
And after the construction of the main bridge body is finished, asphalt pavement, bridge floor guardrails and other auxiliary structures are constructed, and the construction of the arch bridge between tunnels is finished.
The method is adopted to install the prefabricated member through the full assembly without additionally erecting a template, so that the cost is effectively saved, the construction period is shortened, the construction difficulty and the safety risk are reduced, the site restriction influence of the special terrain of the deep-cut canyon is reduced, the spanning capability of the bridge with the long span is effectively ensured, the economical efficiency is good, the requirement of quickly constructing the bridge between tunnels is met, the difficulty in constructing the construction sidewalk of the bridge between the deep-cut canyon tunnels is fully solved, and the problem that the construction time of the bridge between tunnels is short is brought.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides an arched bridge between tunnel convenient to quick construction, its characterized in that contains the main arch, connect in stull (1), steel crossbeam (2), jib (3) and decking (4) between the main arch rib, the arch rib contains steel pipe (5), it has the concrete to fill in steel pipe (5), stull (1) and steel crossbeam (2) are all along the stull to setting up, jib (3) one end connect in arch rib, the other end connect in steel crossbeam (2), every the both ends of steel crossbeam (2) correspond respectively and connect one jib (3), decking (4) contain wave folding steel sheet (6) and concrete, wave folding steel sheet (6) connect in steel crossbeam (2).
2. The arch bridge of claim 1, wherein the direction of the undulation extension of the undulated steel plate (6) is arranged in the transverse bridge direction.
3. The arch bridge of claim 2, wherein the bridge deck (4) further comprises end sealing plates, both ends of the corrugated steel plates (6) are welded to the end sealing plates, and the end sealing plates are welded to the top surfaces of the steel beams (2).
4. The arch bridge of any one of claims 1 to 3, wherein the corrugated steel plate (6) is welded with shear keys (8) or perforated steel plates or transverse steel bars.
5. An arch bridge between tunnels according to any of claims 1-3, characterized in that the steel beams (2) are I-beams.
6. The arch bridge of any one of claims 1 to 3, wherein the hanger bar (3) is an epoxy-coated steel strand.
7. The arch bridge of any one of claims 1 to 3, wherein the arch rib is of a single round tube concrete-filled structure or a dumbbell type concrete-filled structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922068910.4U CN211171563U (en) | 2019-11-26 | 2019-11-26 | Tunnel arch bridge convenient to quick construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820519A (en) * | 2019-11-26 | 2020-02-21 | 四川省公路规划勘察设计研究院有限公司 | Tunnel arch bridge convenient for rapid construction and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820519A (en) * | 2019-11-26 | 2020-02-21 | 四川省公路规划勘察设计研究院有限公司 | Tunnel arch bridge convenient for rapid construction and construction method thereof |
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