CN217678551U - Upper bridge and lower tunnel combined construction structure - Google Patents
Upper bridge and lower tunnel combined construction structure Download PDFInfo
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- CN217678551U CN217678551U CN202221292589.3U CN202221292589U CN217678551U CN 217678551 U CN217678551 U CN 217678551U CN 202221292589 U CN202221292589 U CN 202221292589U CN 217678551 U CN217678551 U CN 217678551U
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- 238000010276 construction Methods 0.000 title claims abstract description 74
- 239000002131 composite material Substances 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 238000011065 in-situ storage Methods 0.000 claims description 7
- 239000004593 Epoxy Substances 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 12
- 238000005553 drilling Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012966 insertion method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses an upper bridge and lower tunnel co-construction structure, including bridge construction, tunnel structure include rectangle frame-type tunnel, rectangle frame-type tunnel include with the bridge construction coincidence build section, not with the bridge construction coincidence build the section singly, rectangle frame-type tunnel co-construction section bottom be equipped with many trapezoidal downward turning roof beams of vertically and horizontally staggered, trapezoidal downward turning roof beam bottom be equipped with long stub, rectangle frame-type tunnel co-construction section top be equipped with many trapezoidal upward turning roof beams of vertically and horizontally staggered; the bridge structure comprises a prefabricated hollow pier, socket piers and a capping beam, wherein the bottoms of the prefabricated hollow pier and the socket piers are arranged at the intersection of the trapezoidal upturning beam and the trapezoidal upturning beam, and the capping beam is arranged at the top of the prefabricated hollow pier. The utility model discloses a structure is built jointly to upper bridge lower tunnel passes power rationally, warp evenly, practices thrift land used and investment.
Description
Technical Field
The utility model relates to a bridge and tunnel engineering technical field especially relates to a structure is built jointly to tunnel under upper bridge.
Background
With the increasing urban traffic volume, the construction of urban road viaducts and underground tunnels is more and more intensive, and the condition that the viaducts and the underground tunnels need collinear construction is frequently generated. Traditional construction mode tunnel passes from the bridge pile side, and the tunnel influences seriously with the bridge pile each other, and the bridge tunnel is separately under construction, and is extravagant serious, consequently goes up the co-construction structure of tunnel under the bridge gradually and begins to implement gradually.
Chinese published patent, a bridge and tunnel co-construction structure and a construction method thereof (CN 202010008754.7) discloses a bridge and tunnel co-construction mode aiming at the situation that a tunnel passes through a river channel, wherein a pier is arranged at the top of a side wall of the tunnel, the diameter of the pier is the same as that of a tunnel bottom pile foundation so as to be connected with reinforcing steel bars of the pier and the tunnel, and deformation coordination is realized at the bottom of the tunnel by changing the interval of pile foundations; the method disclosed by the patent needs that the bridge and the tunnel are completely collinear, and the distance between the piers is the same as the width of the tunnel, so that the piers can be just located on the side wall; the variable-pitch deformation coordination of the pile foundations is not enough to regulate the uneven deformation of the tunnel.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the upper bridge and lower tunnel combined construction structure is stressed or deformed to cause the structural damage, and providing a structure is reasonable in force transmission and is deformed uniformly.
In order to achieve the above object, the utility model provides a following technical scheme:
a combined construction structure for an upper bridge and a lower tunnel comprises a bridge structure and a tunnel structure, wherein the tunnel structure comprises a rectangular frame type tunnel, the rectangular frame type tunnel comprises a combined construction section coincident with the bridge structure and a single construction section not coincident with the bridge structure, a plurality of trapezoidal downward turning beams which are criss-cross are arranged at the bottom of the combined construction section of the rectangular frame type tunnel, long and short piles are arranged at the bottom of each trapezoidal downward turning beam, and a plurality of trapezoidal upward turning beams which are criss-cross are arranged at the top of the combined construction section of the rectangular frame type tunnel; the bridge structure comprises a prefabricated hollow pier, socket piers and a capping beam, wherein the bottoms of the prefabricated hollow pier and the socket piers are arranged at the intersection of the trapezoidal upturning beam and the trapezoidal upturning beam, and the capping beam is arranged at the top of the prefabricated hollow pier.
As the utility model discloses preferred scheme, long stub be the compound long stub of hard and soft, the section built together in the length stake set up to middle short both sides long along tunnel width direction, the section built together in the length stake set up to middle long both ends short along tunnel length direction.
As the utility model discloses preferred scheme, the compound long and short stake of rigid and flexible include drilling bored concrete pile, the MJS worker method stake, the drilling bored concrete pile locate in the middle of the MJS worker method stake, drilling bored concrete pile diameter be not more than trapezoidal turning over the width of roof beam bottom surface down, the MJS worker method stake length homogeneous phase of the compound long and short stake of rigid and flexible the same.
As the utility model discloses preferred scheme, trapezoidal turn over the roof beam and trapezoidal cross point department of turning over the roof beam on be equipped with annular rim of a cup, the socket joint mound locate annular rim of a cup middle part, the socket joint mound outside be equipped with and be located the prefabricated hollow mound of annular rim of a cup, prefabricated hollow mound bottom and prefabricated hollow mound and annular rim of a cup between the space in be equipped with the epoxy mortar layer.
As the utility model discloses preferred scheme, the co-construction section and the single section of building of rectangle frame-type tunnel between be equipped with the movement joint.
As the utility model discloses preferred scheme, the single section bottom of building of rectangle frame-type tunnel be equipped with many trapezoidal turning over the roof beam down, the single trapezoidal turning over roof beam bottom down of building the section be equipped with the compound long stub of hard and soft.
As the utility model discloses preferred scheme, rectangle frame-type tunnel both sides be equipped with steel pipe composite bridge pile, steel pipe composite bridge pile top set up the cushion cap, the cushion cap top set up the pier, the pier top set up the bent cap.
As the utility model discloses preferred scheme, the steel pipe composite bridge pile include the bored concrete pile, the bored concrete pile outside set up the steel pipe, steel pipe bottom degree of depth exceed trapezoidal turning over the roof beam bottom down.
Due to the complex environment of urban roads, the following solutions are needed: the problem of force transmission that a bridge pile cannot be exactly located at the side wall of a tunnel when an upper bridge and a lower tunnel are constructed together, the problems of uneven stress and deformation of a bridge and tunnel combined construction structure under the condition of a soft soil foundation, and the problem that the side bridge pile of the tunnel is seriously influenced when a bridge is wider than the tunnel; the upper bridge and lower tunnel combined construction structure has reasonable force transmission and uniform deformation, avoids structural damage caused by excessive stress or deformation of the bridge and tunnel combined construction structure, saves land and investment, has special length arrangement forms of rigid-flexible composite long and short piles according with the distribution characteristics of pressure at the bottom of the bridge and tunnel combined construction, can realize uniform stress and deformation at the bottom of a tunnel, is in a trapezoidal interface and is arranged in a transverse and longitudinal staggered manner, increases the rigidity of the bottom, combines the combination form of MJS construction piles and drilling cast-in-place piles of the rigid-flexible composite long and short piles, enables the stress deformation of the bottom plate to be more uniform, solves the punching of the bottom plate by the pier in the arrangement form of the upturned beam, uniformly transmits the load at the upper part of the bridge to the side wall and the middle partition wall through the upturned beam, does not need the pier to correspond to the centers of the side wall and the middle partition wall, is connected with the annular cup mouth of the upturned beam, enables the force transmission of the prefabricated hollow pier to be more direct, can accelerate the construction of the pier by an assembled type, thereby backfilling the foundation pit can be early, the foundation pit exposed to reduce the influence of the foundation pit on the adjacent piles, the composite steel pipe, the foundation pit, the rigidity of the foundation pit can better resist the foundation pit.
The utility model has the advantages that: the upper bridge and lower tunnel combined construction structure has reasonable force transmission and even deformation, and saves land and investment.
Drawings
Fig. 1 is a schematic structural view of the cross section of the present invention.
Fig. 2 is a schematic structural diagram of a longitudinal section of the present invention.
Fig. 3 is the structural schematic diagram of the trapezoidal upturning beam and the annular cup rim of the utility model.
Fig. 4 is the utility model discloses prefabricated hollow mound and trapezoidal upturning beam node schematic diagram.
Fig. 5 is the structural schematic diagram of the rigid-flexible composite long and short pile of the present invention.
Fig. 6 is the structural schematic diagram of the steel pipe composite pile of the present invention.
In the figure: 1. rectangular frame type tunnel 2, combined construction section 3 and single construction section
4. Trapezoidal downward turning beam 5, long and short piles 6 and trapezoidal upward turning beam
7. Prefabricated hollow pier 8, socket pier 9, capping beam 10 and annular cup mouth
11. Epoxy mortar layer 12, deformation joint 13 and steel pipe composite bridge pile
14. Bearing platform 15, pier 16, steel pipe 51 and cast-in-situ bored pile
52. And (3) carrying out MJS construction pile.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the scope of protection of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-6, the present invention provides a technical solution:
a combined construction structure for an upper bridge and a lower tunnel comprises a bridge structure and a tunnel structure, wherein the tunnel structure comprises a rectangular frame type tunnel 1, the rectangular frame type tunnel 1 comprises a combined construction section 2 superposed with the bridge structure and a single construction section 3 not superposed with the bridge structure, a plurality of trapezoidal downward turning beams 4 which are vertically and horizontally staggered are arranged at the bottom of the combined construction section 2 of the rectangular frame type tunnel 1, long and short piles 5 are arranged at the bottom of the trapezoidal downward turning beams 4, and a plurality of trapezoidal upward turning beams 6 which are vertically and horizontally staggered are arranged at the top of the combined construction section 2 of the rectangular frame type tunnel 1; the bridge structure comprises a prefabricated hollow pier 7, a socket pier 8 and a cover beam 9, the bottoms of the prefabricated hollow pier 7 and the socket pier 8 are arranged at the intersection of the trapezoidal upward turning beam 6 and the trapezoidal upward turning beam 6, and the cover beam 9 is arranged at the top of the prefabricated hollow pier 7.
The long and short piles 5 are rigid-flexible composite long and short piles, the long and short piles 5 in the combined construction section 2 are arranged to be long at the middle and the two sides along the width direction of the tunnel, and the long and short piles 5 in the combined construction section 2 are arranged to be long at the middle and the two ends along the length direction of the tunnel.
The rigid-flexible composite long and short piles comprise cast-in-place piles 51 and MJS construction method piles 52, the cast-in-place piles 51 are arranged in the middle of the MJS construction method piles 52, the diameter of each cast-in-place pile 51 is not larger than the width of the bottom surface of the trapezoidal downward-turned beam 4, and the lengths of the MJS construction method piles 52 of the rigid-flexible composite long and short piles are the same.
An annular cup opening 10 is formed in the intersection of the trapezoid upturning beam 6 and the trapezoid upturning beam 6, the socket pier 8 is arranged in the middle of the annular cup opening 10, the prefabricated hollow pier 7 located in the annular cup opening 10 is arranged on the outer side of the socket pier 8, and an epoxy mortar layer 11 is arranged at the bottom of the prefabricated hollow pier 7 and in a gap between the prefabricated hollow pier 7 and the annular cup opening 10.
A deformation joint 12 is arranged between the joint construction section 2 and the single construction section 3 of the rectangular frame type tunnel 1.
3 bottoms in section are built to list of rectangle frame-type tunnel 1 are equipped with many trapezoidal turning beams down, and 3 trapezoidal turning beam bottoms in section are built to list are equipped with hard and soft compound long stub down.
The steel pipe composite bridge piles 13 are arranged on two sides of the rectangular frame type tunnel 1, bearing platforms 14 are arranged at the tops of the steel pipe composite bridge piles 13, piers 15 are arranged on the tops of the bearing platforms 14, and capping beams are arranged at the tops of the piers 15.
The steel pipe composite bridge pile 13 comprises a cast-in-situ bored pile, a steel pipe 16 is arranged on the outer side of the cast-in-situ bored pile, and the bottom depth of the steel pipe 16 exceeds the bottom of the trapezoidal downward-turning beam 4.
The specific implementation process comprises the following steps:
lofting and positioning are carried out according to the distance between the rigid and flexible composite long and short piles, and an MJS high-pressure jet grouting pile machine is adopted to carry out pile construction in an MJS construction method, wherein the piles in all the MJS construction method are the same in length and height;
marking the pile length of a rigid-flexible composite pile end pile at a constructed MJS construction method pile position, constructing a bored pile in the middle of the MJS construction method pile by adopting a rotary drilling rig, wherein the bored pile is short in the middle and long at two sides along the width direction of a tunnel, and is long in the middle and short at two ends along the length direction of the tunnel, and strictly controlling the pile top and pile bottom elevation to meet the design requirement in the construction process;
constructing a steel pipe composite bridge pile on the outer side of a tunnel, firstly inserting a steel pipe by adopting a vibration insertion method, inserting the steel pipe below the bottom elevation of a downward-turning beam, drilling a hole in the steel pipe, placing a reinforcement cage, and pouring concrete to form the steel pipe composite bridge pile;
constructing a support structure of a tunnel foundation pit between the tunnel position and the steel pipe composite bridge pile, excavating the tunnel foundation pit to reach the top elevation of the trapezoidal downward turning beam, excavating the trapezoidal downward turning beam foundation pit, and cutting off the pile head of the redundant cast-in-situ bored pile;
binding reinforcing steel bars of a trapezoidal downward turning beam, connecting the reinforcing steel bars at the intersection of the longitudinal beam and the transverse beam of the trapezoidal downward turning beam with main reinforcing steel bars of the cast-in-situ bored pile, binding reinforcing steel bars of a tunnel bottom plate, connecting the reinforcing steel bars of the tunnel bottom plate with the main reinforcing steel bars of the trapezoidal downward turning beam, and then integrally pouring the trapezoidal downward turning beam and the tunnel bottom plate;
constructing tunnel side walls and middle partition walls, erecting a template, binding reinforcing steel bars of a tunnel top plate, reinforcing steel bars of a trapezoidal upturning beam, reinforcing steel bars of an annular cup opening and a socket pier, welding main reinforcing steel bars of the trapezoidal upturning beam with main reinforcing steel bars of the annular cup opening and the socket pier, and integrally pouring the tunnel top plate, the trapezoidal upturning beam, the annular cup opening and the socket pier;
laying an epoxy mortar layer in the poured annular cup mouth, hoisting a prefabricated hollow pier to be inserted into the annular cup mouth, inserting a socket pier into the prefabricated hollow pier, and filling epoxy mortar in a gap between the prefabricated hollow pier and the annular cup mouth;
filling and wrapping the insertion nodes of the annular cup openings and the prefabricated hollow piers with plain concrete, and backfilling earthwork at the side of the tunnel and the top of the tunnel;
pouring a bearing platform and a pier at the top of the steel pipe composite bridge pile;
and (5) performing construction of the bent cap, the table cap and other upper structures.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a tunnel co-construction structure under upper bridge, includes bridge construction, tunnel structure, its characterized in that: the tunnel structure comprises a rectangular frame type tunnel, the rectangular frame type tunnel comprises a combined construction section which is superposed with the bridge structure and a single construction section which is not superposed with the bridge structure, a plurality of trapezoidal downward turning beams which are criss-cross are arranged at the bottom of the combined construction section of the rectangular frame type tunnel, long and short piles are arranged at the bottom of the trapezoidal downward turning beams, and a plurality of trapezoidal upward turning beams which are criss-cross are arranged at the top of the combined construction section of the rectangular frame type tunnel;
the bridge structure comprises a prefabricated hollow pier, a socket pier and a cover beam, wherein the bottoms of the prefabricated hollow pier and the socket pier are arranged at the intersection of a trapezoidal upward turning beam and a trapezoidal upward turning beam, and the cover beam is arranged at the top of the prefabricated hollow pier.
2. The upper bridge and lower tunnel combined construction structure according to claim 1, wherein the long and short piles are rigid-flexible composite long and short piles, the long and short piles in the combined construction section are arranged to be short in the middle and long on both sides in the width direction of the tunnel, and the long and short piles in the combined construction section are arranged to be long in the middle and short on both ends in the length direction of the tunnel.
3. The upper bridge and lower tunnel combined construction structure according to claim 2, wherein the rigid-flexible composite long and short piles comprise cast-in-place piles and MJS construction piles, the cast-in-place piles are arranged in the middle of the MJS construction piles, the diameter of the cast-in-place piles is not larger than the width of the bottom surface of the trapezoidal downward-turned beam, and the rigid-flexible composite long and short piles are identical in length in the MJS construction.
4. The upper bridge and lower tunnel combined construction structure according to claim 1, wherein an annular cup is arranged at the intersection of the trapezoidal upturning beam and the trapezoidal upturning beam, the socket pier is arranged in the middle of the annular cup, a prefabricated hollow pier arranged in the annular cup is arranged on the outer side of the socket pier, and an epoxy mortar layer is arranged at the bottom of the prefabricated hollow pier and in a gap between the prefabricated hollow pier and the annular cup.
5. The upper bridge and lower tunnel combined construction structure according to claim 1, wherein a deformation joint is arranged between the combined construction section and the single construction section of the rectangular frame type tunnel.
6. The upper bridge and lower tunnel combined construction structure according to claim 1, wherein a plurality of trapezoidal downward-turning beams are arranged at the bottom of a single construction section of the rectangular frame type tunnel, and rigid-flexible composite long and short piles are arranged at the bottom of the trapezoidal downward-turning beams of the single construction section.
7. The upper bridge and lower tunnel combined construction structure according to claim 1, wherein steel pipe composite bridge piles are arranged on two sides of the rectangular frame type tunnel, bearing platforms are arranged on the tops of the steel pipe composite bridge piles, piers are arranged on the tops of the bearing platforms, and cover beams are arranged on the tops of the piers.
8. The upper bridge and lower tunnel combined construction structure according to claim 7, wherein the steel pipe composite bridge pile comprises a cast-in-situ bored pile, steel pipes are arranged on the outer side of the cast-in-situ bored pile, and the bottom depth of the steel pipes exceeds the bottom of the trapezoidal downward-turning beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221292589.3U CN217678551U (en) | 2022-05-24 | 2022-05-24 | Upper bridge and lower tunnel combined construction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221292589.3U CN217678551U (en) | 2022-05-24 | 2022-05-24 | Upper bridge and lower tunnel combined construction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217678551U true CN217678551U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221292589.3U Active CN217678551U (en) | 2022-05-24 | 2022-05-24 | Upper bridge and lower tunnel combined construction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217678551U (en) |
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2022
- 2022-05-24 CN CN202221292589.3U patent/CN217678551U/en active Active
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