CN114395984A - Beam construction method for bridge and tunnel co-constructed structure - Google Patents
Beam construction method for bridge and tunnel co-constructed structure Download PDFInfo
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- CN114395984A CN114395984A CN202210022754.1A CN202210022754A CN114395984A CN 114395984 A CN114395984 A CN 114395984A CN 202210022754 A CN202210022754 A CN 202210022754A CN 114395984 A CN114395984 A CN 114395984A
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- bridge
- tunnel
- abutment
- river
- pile
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 230000002787 reinforcement Effects 0.000 claims abstract description 39
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 7
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
Abstract
The invention discloses a beam construction method for a bridge and tunnel co-constructed structure, which comprises the following steps: carrying out slope-setting excavation on the foundation pit, and correspondingly chiseling bridge pile heads and pile heads of tunnel uplift piles in the coverage area of the tunnel after excavating to the design depth of the tunnel bottom plate; constructing a bottom plate, side walls and a middle partition wall of the tunnel on the upper parts of the bridge piles and the tunnel uplift piles; then binding a tunnel roof reinforcement cage, a river-crossing section beam reinforcement cage and a rib plate reinforcement cage to synchronously pour and form a river-crossing section beam and a rib plate type abutment which are integrated with the tunnel roof; chiseling off pile heads of bridge piles at two sides of a tunnel coverage area and constructing a straight-wall abutment; and erecting a main bridge beam above the straight-wall type bridge abutment and the rib plate type bridge abutment. The invention has the advantages that: the cross bridge section beam can restrain the transverse displacement of the rib plate, concentrated loads of the rib plate and the bridge abutment are converted into uniformly distributed loads to be transmitted to the tunnel top plate, the overall stability of the rib plate bridge abutment is improved, and meanwhile the stress state of the tunnel top plate is improved.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a beam construction method for a bridge and tunnel co-constructed structure.
Background
In urban municipal traffic construction, a road bridge and a highway tunnel are common construction projects, and when the road bridge and the highway tunnel are constructed across a river, a ground road is constructed across the river in a bridge form, and the tunnel is constructed on the side edge of the bridge to form a composite traffic system. The construction method is time-consuming and labor-consuming, and needs to be implemented in the riverbed respectively to construct pile foundations, so that building materials are wasted and construction cost is improved, and obviously, better effects can be achieved by building the road bridge and the highway tunnel in a cooperative manner.
Disclosure of Invention
The invention aims to provide a beam construction method for a bridge and tunnel cooperative construction structure according to the defects of the prior art, the beam construction method is characterized in that a rib plate type abutment, a river-crossing section beam and a tunnel top plate are synchronously bound and poured to form an integral structure, and the force transmission route of the structure is clear.
The purpose of the invention is realized by the following technical scheme:
a beam construction method for a bridge and tunnel co-constructed structure is characterized by comprising the following steps:
(1) arranging a circle of foundation pit enclosure structure in a river channel area to be constructed, and correspondingly constructing a tunnel uplift pile and a bridge pile in the foundation pit enclosure structure;
(2) after the maintenance of the foundation pit support structure reaches the design strength, carrying out slope releasing excavation on the foundation pit; after the tunnel bottom plate is excavated to the designed depth, the bridge pile head and the pile head of the tunnel uplift pile in the coverage area of the tunnel are correspondingly chiseled;
(3) respectively binding a bottom plate reinforcement cage, a middle partition wall reinforcement cage and a side wall reinforcement cage of the tunnel at the upper ends of the bridge piles and the tunnel uplift piles with pile heads chiseled away, and then pouring to form the bottom plate, the two side walls and the middle partition wall of the tunnel;
(4) binding a top plate reinforcement cage on the bottom plate, the side wall and the upper end part of the middle partition wall of the tunnel, and binding a river crossing section beam reinforcement cage and a rib plate reinforcement cage on the top plate reinforcement cage; then synchronously constructing and pouring a top plate of the tunnel, a river-crossing section beam and a plurality of rib plates, wherein the river-crossing section beam and the rib plates are positioned above the top plate, so that the top plate, the river-crossing section beam and the rib plates form an integrated structure, and the rib plates form a rib plate type bridge abutment;
(5) backfilling soil above the top plate;
(6) chiseling pile heads of the bridge piles in the range of two sides except the coverage area of the tunnel, and sequentially constructing a bearing platform, a straight-wall bridge platform and a platform cap at the upper end of the bridge pile from bottom to top;
(7) and erecting a main beam of the bridge above the rib plate type bridge abutment and the straight wall type bridge abutment.
In the step (1), before the foundation pit enclosure structure is constructed, a diversion open channel is arranged on one side of the upstream of the river channel so as to divert river water out of the river channel.
The bridge comprises a driving part and non-driving parts positioned on two sides of the driving part, and pile heads of the bridge piles correspondingly chiseled in the step (2) are positioned below the driving part of the bridge.
In the step (4), the cross bridge of the cross river reach beams is arranged on the top plate, the lower parts of the reinforcement cages of the cross river reach beams are connected with the top of the reinforcement cage of the top plate through reinforcement bars to form integral casting, and two cross river reach beams are arranged below each group of rib plate type bridge abutments at intervals; the rib plates are in a right-angle ladder shape and are arranged along the longitudinal bridge direction, and the rib plate type bridge abutment is formed by a plurality of rib plates which are arranged on the cross river reach beam along the transverse bridge direction at intervals.
The rib plate type bridge abutment is arranged on the side slopes on the two sides of the river channel.
In the step (5), backfilling soil above the top plate refers to: backfilling the casing soil in the area between the two rib plate type bridge abutments to form a planned river bed section.
In the step (6), chiseling pile heads of the bridge piles in the range of two sides except the coverage area of the tunnel refers to: chiseling off a pile head of the bridge pile below the non-human portion of the bridge.
And a deformation joint is arranged between the straight-wall type bridge abutment and the rib plate type bridge abutment.
Before the main beam is erected, filling soil to half of the height of the straight-wall bridge abutment and the height of the rib plate type bridge abutment, and after the main beam is erected, continuing filling soil to the designed elevation.
The invention has the advantages that:
(1) the bridge substructure is integrated with the tunnel roof, the force transmission route of the structure is clear, the construction is more efficient, the construction period is shortened, and the construction cost is saved;
(2) the upper structure of the bridge also serves as the floating pressure resistance of the tunnel, and the tunnel serves as one part of the bridge foundation to assist in transferring the load of the upper structure, so that the displacement control of the two parts is facilitated; the bridge-passing section beam can restrain the transverse displacement of the rib plate, and the concentrated loads of the rib plate and the abutment are converted into uniformly distributed loads to be transmitted to the tunnel top plate, so that the integral stability of the rib plate abutment is improved, and the stress state of the tunnel top plate is improved;
(3) the bridge and tunnel cooperative construction occupies small construction land, reduces land acquisition and removal cost, avoids the steps of repeatedly performing river regulation, foundation pit excavation and the like in respective construction, and is particularly suitable for environments with narrow spaces, busy traffic and complex surrounding environment in cities;
(4) the bridge-tunnel cooperative construction structure effectively solves the three-dimensional intersection problem of tunnels, water channels and bridges, completely reserves the respective traffic capacity, and provides reference and reference for cooperative construction of urban comprehensive three-dimensional traffic.
Drawings
FIG. 1 is a plan view of a bridge and tunnel co-construction area of the present invention;
FIG. 2 is a cross-sectional layout view of a bridge and tunnel co-constructed structure according to the present invention;
FIG. 3 is an elevation view of a roadway section of the bridge and tunnel co-constructed structure of the present invention;
fig. 4 is a human non-partial elevational view of a bridge and tunnel co-constructed structure of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
referring to fig. 1-4, the labels in the figures are: the tunnel comprises a tunnel 1, a bottom plate 1a, side walls 1b, a middle partition wall 1c, a top plate 1d, a bridge 2, a vehicle traveling part 2a, a pedestrian and non-pedestrian part 2b, tunnel uplift piles 3, bridge piles 4, bridge piles 5, rib plates 6, a bearing platform 7, a straight-wall bridge platform 8, a platform cap 9, deformation joints 10, a main beam 11, a riverbed 12 and a river-crossing section beam 13.
Example (b): as shown in fig. 1, 2, 3, and 4, the embodiment specifically relates to a beam construction method for a bridge and tunnel co-constructed structure, and the beam construction method mainly includes the following steps:
(1) when the dry season begins, arranging a diversion open channel on one side of the upstream of the river channel to conduct river diversion, and renovating the river channel according to the planned 12 sections of the riverbed; the bridge 2 to be constructed and the tunnel 1 to be constructed are obliquely crossed in a river channel area and cross a riverbed 12, the tunnel 1 is positioned below a main beam 11 of the bridge 2, the tunnel 1 is of a double-hole box culvert structure, the tunnel 1 and the bridge 2 are constructed in the same time, and the stress deformation is coordinated;
arranging a circle of foundation pit enclosure structure in a river channel area to be constructed, and correspondingly constructing a tunnel uplift pile 3, a bridge pile 4 and a bridge pile 5 in the foundation pit enclosure structure, wherein as shown in figure 1, the tunnel uplift pile 3 is arranged according to the trend of a tunnel 1, the bridge pile 4 is positioned in the coverage area of the tunnel 1, and the bridge pile 5 is positioned at two sides outside the coverage area of the tunnel 1; depending on the actual arrangement of the bridge 2, the bridge stub 4 is located below the driven part 2a of the bridge 2 and the bridge stub 5 is located below the human non-part 2b of the bridge 2.
(2) After the foundation pit support structure and all piles are maintained to reach the design strength, carrying out slope-releasing excavation on the foundation pit; after the design depth of the bottom plate 1a of the tunnel 1 is excavated, pile heads of bridge piles 4 and pile heads of uplift piles 3 in the coverage area of the tunnel 1 are chiseled correspondingly, and certain exposed reinforcing steel bars are reserved at the pile heads so as to be connected with a subsequent reinforcing cage when chiseling.
(3) The upper ends of the bridge piles 4 and the tunnel uplift piles 3 with pile heads chiseled off are respectively bound with a bottom plate reinforcement cage, a middle partition wall reinforcement cage and side wall reinforcement cages at two sides of the tunnel 1, wherein the bottom plate reinforcement cages are connected with exposed reinforcements at the upper ends of the pile heads when the bottom plate reinforcement cages are bound; and then, a bottom plate 1a, two side walls 1b and an intermediate wall 1c of the tunnel 1 are poured, and the bottom plate 1a, the tunnel uplift pile 3 and the bridge pile 4 can form an integral structure.
(4) Then, a top plate reinforcement cage is bound on the upper end portions of the bottom plate 1a, the two side walls 1b and the middle partition wall 1c of the tunnel 1, and a river-section beam reinforcement cage and two rib plate reinforcement cages are synchronously bound on the top plate reinforcement cage, the river-section beam reinforcement cage is transversely arranged and longitudinally arranged at intervals, and the rib plate reinforcement cages are correspondingly bound according to the design positions of the rib plates 6; after finishing the reinforcement cage binding, the top plate 1d of the tunnel 1, two river reach beams 13 above the top plate 1d and a plurality of rib plates 6 are synchronously constructed and poured, and the rib plates 6 are combined to form a rib plate type bridge abutment.
It should be noted here that the bottom of the reinforcement cage of the cross section beam 13 and the bottom of the reinforcement cage of the rib plate 6 are connected with the top of the reinforcement cage of the top plate 1d through steel bars so as to form an integral structure during casting.
The rib plates 6 are in a right-angle trapezoidal shape and are arranged along the longitudinal bridge direction, and the rib plate type bridge abutment is composed of a plurality of rib plates 6 which are arranged on the top plate 1d at intervals along the transverse bridge direction. The rib plate type bridge abutment is arranged at the side slopes at the two sides of the river bed 12. The cross river reach beam 13 can restrain the transverse displacement of the rib plates 6, concentrated loads of the rib plates 6 and the bridge abutment are converted into uniformly distributed loads to be transmitted to the tunnel top plate 1d, the overall stability of the rib plate type bridge abutment is improved, and meanwhile the stress state of the tunnel top plate 1d is improved.
(5) After the top plate 1d of the tunnel 1 is maintained to reach the design strength, performing waterproof construction on the top plate 1 d; and then earth covering and backfilling are carried out above the top plate 1d of the tunnel 1, and the backfilling area is an area between rib plate type bridge abutments on two banks so as to backfill a riverbed 12 forming a planned section.
(6) The pile heads of the bridge piles 5 in the range of two sides except the coverage area of the tunnel 1, namely the bridge piles 5 below the human-non part 2b of the bridge 2, are chiseled, and a bearing platform 8, a straight-wall type bridge platform 9 and a platform cap 10 are sequentially constructed with the upper ends of the bridge piles 5 from bottom to top. In order to avoid uneven settlement between the structures of the non-human section 2b and the vehicle section 2a, a deformation joint 10 is provided between the straight-walled abutment 9 and the ribbed slab abutment, and the width of the deformation joint 10 is generally selected to be about 2 cm.
(7) Filling soil to half of the height of the straight-wall bridge abutment 9 and the rib plate type bridge abutment, and then erecting a main beam 11 of the bridge 1 above the straight-wall bridge abutment 9 and the rib plate type bridge abutment on two sides of the river bed 12, wherein the main beam 11 in the embodiment is a prestressed concrete simply-supported box beam; and after the main beam 11 is erected, continuously filling soil to the designed elevation. And then constructing the auxiliary structures of the bridge 2 and the tunnel 1, preferably completing construction and recovering the river channel.
The beneficial effect of this embodiment lies in:
(1) the bridge substructure is integrated with the tunnel roof, the force transmission route of the structure is clear, the construction is more efficient, the construction period is shortened, and the construction cost is saved.
(2) The bridge superstructure is as the anti floating pressure weight in tunnel concurrently, and the tunnel helps transmitting superstructure load as one part of bridge basis, is favorable to the displacement control of two parts.
(3) The bridge and tunnel cooperative construction occupies a small construction area, reduces land acquisition and removal cost, avoids the steps of repeatedly performing river regulation, foundation pit excavation and the like in respective construction, and is particularly suitable for environments with narrow and small urban spaces, busy traffic and complex surrounding environments.
(4) The bridge-tunnel cooperative construction structure effectively solves the three-dimensional intersection problem of tunnels, water channels and bridges, completely reserves the respective traffic capacity, and provides reference and reference for cooperative construction of urban comprehensive three-dimensional traffic.
Claims (9)
1. A beam construction method for a bridge and tunnel co-constructed structure is characterized by comprising the following steps:
(1) arranging a circle of foundation pit enclosure structure in a river channel area to be constructed, and correspondingly constructing a tunnel uplift pile and a bridge pile in the foundation pit enclosure structure;
(2) after the maintenance of the foundation pit support structure reaches the design strength, carrying out slope releasing excavation on the foundation pit; after the tunnel bottom plate is excavated to the designed depth, the bridge pile head and the pile head of the tunnel uplift pile in the coverage area of the tunnel are correspondingly chiseled;
(3) respectively binding a bottom plate reinforcement cage, a middle partition wall reinforcement cage and a side wall reinforcement cage of the tunnel at the upper ends of the bridge piles and the tunnel uplift piles with pile heads chiseled away, and then pouring to form the bottom plate, the two side walls and the middle partition wall of the tunnel;
(4) binding a top plate reinforcement cage on the bottom plate, the side wall and the upper end part of the middle partition wall of the tunnel, and binding a river crossing section beam reinforcement cage and a rib plate reinforcement cage on the top plate reinforcement cage; then synchronously constructing and pouring a top plate of the tunnel, a river-crossing section beam and a plurality of rib plates, wherein the river-crossing section beam and the rib plates are positioned above the top plate, so that the top plate, the river-crossing section beam and the rib plates form an integrated structure, and the rib plates form a rib plate type bridge abutment;
(5) backfilling soil above the top plate;
(6) chiseling pile heads of the bridge piles in the range of two sides except the coverage area of the tunnel, and sequentially constructing a bearing platform, a straight-wall bridge platform and a platform cap at the upper end of the bridge pile from bottom to top;
(7) and erecting a main beam of the bridge above the rib plate type bridge abutment and the straight wall type bridge abutment.
2. The method for constructing a bridge and tunnel co-constructed structure according to claim 1, wherein in the step (1), before constructing the foundation pit enclosure, a diversion channel is provided on an upstream side of the river channel to divert river water out of the river channel.
3. The method for constructing a bridge and tunnel co-constructed structure with beams as claimed in claim 1, wherein the bridge comprises a vehicle-driving part and non-human parts at both sides of the vehicle-driving part, and the pile head of the bridge pile corresponding to the chiseling-out in the step (2) is located under the vehicle-driving part of the bridge.
4. The method for constructing a bridge and tunnel co-constructed structure with beams as claimed in claim 3, wherein in the step (4), the cross bridge direction of the cross section beams is arranged on the top plate, the lower part of the reinforcement cage of the cross section beams is connected with the top of the reinforcement cage of the top plate through the reinforcement to form an integral casting, and two cross section beams are arranged below each group of rib plate type bridge abutments at intervals; the rib plates are in a right-angle ladder shape and are arranged along the longitudinal bridge direction, and the rib plate type bridge abutment is formed by a plurality of rib plates which are arranged on the cross river reach beam along the transverse bridge direction at intervals.
5. The method for constructing a bridge and tunnel co-constructed structure with beams as claimed in claim 4, wherein the rib plate type abutment is provided at the side slopes of both sides of the river.
6. The method for constructing a bridge and tunnel co-constructed structure with beams as claimed in claim 5, wherein in the step (5), the backfilling and covering soil above the roof plate comprises: backfilling the casing soil in the area between the two rib plate type bridge abutments to form a planned river bed section.
7. The method for constructing a bridge and tunnel co-constructed structure with beams as claimed in claim 6, wherein the step (6) of chiseling the pile heads of the bridge piles within the range of both sides except the coverage area of the tunnel comprises: chiseling off a pile head of the bridge pile below the non-human portion of the bridge.
8. A girder construction method for a bridge and tunnel co-construction structure according to claim 7, wherein a deformation joint is provided between the straight-walled abutment and the rib plate type abutment.
9. The method of claim 8, wherein the main girder is filled with soil to a height half of the height of the vertical wall abutment and the rib slab abutment, and the main girder is filled with soil to a design elevation after the erection of the main girder is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210022754.1A CN114395984B (en) | 2022-01-10 | 2022-01-10 | Girder construction method of bridge-tunnel cooperative construction structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210022754.1A CN114395984B (en) | 2022-01-10 | 2022-01-10 | Girder construction method of bridge-tunnel cooperative construction structure |
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| CN114395984A true CN114395984A (en) | 2022-04-26 |
| CN114395984B CN114395984B (en) | 2023-12-01 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6170106B1 (en) * | 1999-09-01 | 2001-01-09 | Alpha Painting & Construction Co., Inc. | Movable safety tunnel for use during bridge maintenance |
| CN204875495U (en) * | 2015-08-17 | 2015-12-16 | 广州大学 | No abutment body seat formula abutment |
| CN107339109A (en) * | 2017-06-26 | 2017-11-10 | 西安工业大学 | The construction method of existing road is worn under super Shallow tunnel with large cross-section |
| CN111074707A (en) * | 2020-01-02 | 2020-04-28 | 深圳市综合交通设计研究院有限公司 | Bridge and tunnel co-construction structure and construction method thereof |
| CN111270615A (en) * | 2020-03-11 | 2020-06-12 | 中国建筑第八工程局有限公司 | Tunnel widening structure at bridge-tunnel connection part and bridge construction method |
| CN211947744U (en) * | 2019-12-30 | 2020-11-17 | 深圳市综合交通设计研究院有限公司 | Bridge and tunnel co-construction structure of bidirectional travelling crane |
| CN112252168A (en) * | 2020-11-16 | 2021-01-22 | 西南交通大学 | Ribbed plate type retaining wall bridge abutment and construction method |
-
2022
- 2022-01-10 CN CN202210022754.1A patent/CN114395984B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6170106B1 (en) * | 1999-09-01 | 2001-01-09 | Alpha Painting & Construction Co., Inc. | Movable safety tunnel for use during bridge maintenance |
| CN204875495U (en) * | 2015-08-17 | 2015-12-16 | 广州大学 | No abutment body seat formula abutment |
| CN107339109A (en) * | 2017-06-26 | 2017-11-10 | 西安工业大学 | The construction method of existing road is worn under super Shallow tunnel with large cross-section |
| CN211947744U (en) * | 2019-12-30 | 2020-11-17 | 深圳市综合交通设计研究院有限公司 | Bridge and tunnel co-construction structure of bidirectional travelling crane |
| CN111074707A (en) * | 2020-01-02 | 2020-04-28 | 深圳市综合交通设计研究院有限公司 | Bridge and tunnel co-construction structure and construction method thereof |
| CN111270615A (en) * | 2020-03-11 | 2020-06-12 | 中国建筑第八工程局有限公司 | Tunnel widening structure at bridge-tunnel connection part and bridge construction method |
| CN112252168A (en) * | 2020-11-16 | 2021-01-22 | 西南交通大学 | Ribbed plate type retaining wall bridge abutment and construction method |
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| CN114395984B (en) | 2023-12-01 |
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