CN216586664U - Ramp bridge combined supporting system constructed in parallel with underground complex - Google Patents
Ramp bridge combined supporting system constructed in parallel with underground complex Download PDFInfo
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- CN216586664U CN216586664U CN202123072271.2U CN202123072271U CN216586664U CN 216586664 U CN216586664 U CN 216586664U CN 202123072271 U CN202123072271 U CN 202123072271U CN 216586664 U CN216586664 U CN 216586664U
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Abstract
The utility model provides a ramp bridge combined supporting system constructed in parallel with an underground complex, and relates to the technical field of constructional engineering. This combination support system includes bar concrete basis, interim steel-pipe column, the distribution crossbeam, bei lei roof beam and full hall support, wherein, interim steel-pipe column includes interim steel-pipe column outside the foundation ditch and interim steel-pipe column in the foundation ditch, the setting of interim steel-pipe column outside the foundation ditch is on bar concrete basis, interim steel-pipe column sets up in the foundation ditch of underground complex in the foundation ditch, the top of interim steel-pipe column outside the foundation ditch and interim steel-pipe column in the foundation ditch sets up the distribution crossbeam, bei lei roof beam supports on the distribution crossbeam, full hall support supports on bei lei roof beam. The construction method is convenient for realizing the synchronous construction of the pouring of the ramp bridge body and the underground complex structure under the bridge, and saves the construction period.
Description
Technical Field
The utility model relates to the technical field of building engineering, in particular to a ramp bridge combined supporting system constructed in parallel with an underground complex.
Background
Ramp bridges and matched underground complex structures are often required to be arranged near high-speed railway stations, and in order to utilize space under the bridges to the maximum extent, the facilities are often constructed in an integrated arrangement and in parallel at the same time. The ramp bridge beam body structure is poured, a bracket system needs to be erected under the bridge, and the ramp bridge can be constructed after the underground complex structure adjacent to the ramp bridge is sealed according to the conventional process arrangement. In order to save the construction period, a ramp bridge combined supporting system which is built in parallel with an underground complex is necessary to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a ramp bridge combined supporting system which is built in parallel with an underground complex so as to facilitate the synchronous construction of the pouring of a ramp bridge body and the structure of the underground complex under a bridge. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the utility model are described in detail in the following.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a ramp bridge combined supporting system constructed in parallel with an underground complex, which comprises a bar-shaped concrete foundation, steel pipe columns, distribution cross beams, a Bailey beam and a full-space support, wherein the steel pipe columns comprise temporary steel pipe columns outside a foundation pit and temporary steel pipe columns inside the foundation pit, the temporary steel pipe columns outside the foundation pit are arranged on the bar-shaped concrete foundation, the temporary steel pipe columns inside the foundation pit are arranged in the foundation pit of the underground complex, the distribution cross beams are arranged at the tops of the temporary steel pipe columns outside the foundation pit and the temporary steel pipe columns inside the foundation pit, the Bailey beam is supported on the distribution cross beams, and the full-space support is supported on the Bailey beam.
Further, a row of temporary steel pipe columns are formed along the direction of the transverse bridge, and the row of temporary steel pipe columns comprises at least one temporary steel pipe column in the foundation pit and a plurality of temporary steel pipe columns outside the foundation pit; and forming a plurality of rows of temporary steel pipe columns along the bridge direction.
Further, an outer steel pipe transverse connecting assembly is arranged between two adjacent temporary steel pipe columns outside the foundation pit along the transverse bridge direction and/or along the bridge direction; one row of temporary steel pipe columns formed along the direction of the transverse bridge comprises a temporary steel pipe column in a foundation pit, the temporary steel pipe columns are adjacent along the direction of the transverse bridge, an inner steel pipe transverse connection assembly is arranged between the temporary steel pipe columns in the foundation pit and the temporary steel pipe columns outside the foundation pit, and/or an inner steel pipe transverse connection assembly is arranged between the temporary steel pipe columns in the foundation pit and is adjacent along the direction of the transverse bridge.
Furthermore, the outer steel pipe transverse connection assembly comprises horizontal connecting pieces and inclined connecting pieces, the two horizontal connecting pieces are arranged at intervals along the height direction, two ends of each horizontal connecting piece are respectively connected with the two adjacent outer temporary steel pipe columns of the foundation pit, the inclined connecting pieces are connected with the two horizontal connecting pieces, the inclined connecting pieces and the two horizontal connecting pieces form a Z shape, and the inclined connecting pieces and the horizontal connecting pieces are made of channel steel materials.
Further, the inner steel pipe transverse connection assembly comprises two horizontal connection portions and two inclined connection portions, the two horizontal connection portions are arranged at intervals along the height direction, two ends of each horizontal connection portion are respectively connected with the temporary steel pipe column outside the foundation pit and the temporary steel pipe column inside the foundation pit, the inclined connection portions are connected with the two horizontal connection portions and the two inclined connection portions form an X-shaped shape, and the inclined connection portions and the horizontal connection portions are made of channel steel materials.
Furthermore, the temporary steel pipe column outside the foundation pit and the temporary steel pipe column inside the foundation pit are both made of steel pipes with phi mm and mm wall thickness.
Furthermore, the upper end and the lower end of the temporary steel pipe column outside the foundation pit are respectively fixedly connected with the bar-shaped concrete foundation and the distribution beam through flange plates.
Furthermore, an anchor bolt is reserved between the flange plate at the bottom of the temporary steel pipe column outside the foundation pit and the bar-shaped concrete foundation.
Further, the distribution cross beam is an I-shaped steel distribution cross beam; the distribution cross beam extends along the transverse bridge direction, and a plurality of rows of distribution cross beams are arranged along the bridge direction.
Furthermore, the full-hall support adopts a socket type disc buckle type steel pipe support.
The utility model achieves the following beneficial effects:
(1) the ramp bridge combined support system close to the underground complex adopts the temporary steel pipe column outside the foundation pit and the temporary steel pipe column inside the foundation pit and the Bailey beam to form combined support, so that the parallel construction of the pouring of the underground complex structure and the pouring of the ramp bridge body can be ensured, and the construction period is saved.
(2) The ramp bridge combined supporting system outside the foundation pit adopts the steel pipe column and the Bailey beam combined support, so that the space under the bridge is unobstructed, personnel and materials can conveniently enter and exit, and the construction interference on the underground complex structure is reduced to the maximum extent.
(3) The steel pipe column close to the underground complex foundation pit is arranged in the underground complex foundation pit, so that conditions are created for synchronous pouring of the complex structure and pouring of the ramp bridge body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a strip-shaped concrete foundation, a fender pile and a pile foundation provided by an embodiment of the utility model;
FIG. 2 is a schematic diagram of a permanent steel pipe column, a temporary steel pipe column and a transverse connection assembly according to an embodiment of the utility model;
FIG. 3 is a schematic view of a ramp bridge combined supporting system provided by an embodiment of the utility model;
FIG. 4 is a schematic view of a ramp bridge combined supporting system, a bridge cast-in-place beam body and a negative layer of an underground complex provided by the embodiment of the utility model;
FIG. 5 is a schematic view of a ramp bridge combined supporting system, a bridge cast-in-place beam body and a negative layer of an underground complex provided by an embodiment of the utility model;
fig. 6 is a schematic view (pier position cross section) of a cast-in-place beam body and underground complex structure of a bridge provided by the embodiment of the utility model.
In the figure 1-bar concrete foundation; 2-fender posts; 3-pile foundation of temporary steel pipe column; 4-bearing piles of permanent temporary steel pipe columns; 5, temporarily arranging a steel pipe column outside the foundation pit; 6, temporary steel pipe columns in the foundation pit; 7-permanent temporary steel pipe column; 8-transverse connection assembly of the outer steel pipe; 9-a distribution beam; 10-beret beam; 11-full hall support; 12-14mm steel plate; 13-casting a bridge in situ; 14-pier stud; 15-jet grouting pile waterproof curtain; 16-connecting the inner steel pipe transversely; 17-bearing platform.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The utility model provides a ramp bridge combined supporting system constructed in parallel with an underground complex, which comprises a bar-shaped concrete foundation 1, temporary steel pipe columns, distribution cross beams 9, Bailey beams 10 and full space supports 11, wherein the temporary steel pipe columns comprise temporary steel pipe columns 5 outside a foundation pit and temporary steel pipe columns 6 inside the foundation pit, the temporary steel pipe columns 5 outside the foundation pit are arranged on the bar-shaped concrete foundation 1, the temporary steel pipe columns 6 inside the foundation pit are arranged in the foundation pit of the underground complex, the distribution cross beams 9 are arranged at the tops of the temporary steel pipe columns 5 outside the foundation pit and the temporary steel pipe columns 6 inside the foundation pit, the Bailey beams 10 are supported on the distribution cross beams 9, and the full space supports 11 are supported on the Bailey beams 10. Referring to fig. 5, a support system is illustrated. According to the ramp bridge combined support system provided by the utility model, the temporary steel pipe column 5 outside the foundation pit and the temporary steel pipe column 6 in the foundation pit and the Bailey beam 10 form combined support, so that the parallel construction of the pouring of an underground complex structure and the pouring of a ramp bridge body can be ensured, and the construction period is saved; the steel pipe column and the Bailey beam are combined for supporting, so that a space is unobstructed under a bridge, personnel and materials can conveniently enter and exit, and the construction interference on an underground complex structure is reduced to the maximum extent; the steel pipe column close to the underground complex foundation pit is arranged in the underground complex foundation pit, so that conditions are created for synchronous pouring of the complex structure and pouring of the ramp bridge body.
Regarding the temporary steel pipe columns, a row of temporary steel pipe columns are formed along the transverse bridge direction (the width direction of the bridge body), and the row of temporary steel pipe columns comprises at least one foundation pit internal temporary steel pipe column 6 and a plurality of foundation pit external temporary steel pipe columns 5; and forming a plurality of rows of temporary steel pipe columns along the bridge direction. Referring to fig. 5, the transverse bridge direction of the ramp bridge combined supporting system is shown, and in a row of formed temporary steel pipe columns, a temporary steel pipe column 6 in a foundation pit and four temporary steel pipe columns 5 outside the foundation pit are shown. The temporary steel pipe column 5 outside the foundation pit and the temporary steel pipe column 6 inside the foundation pit are both made of steel pipes with the diameter of 800mm and the wall thickness of 16 mm.
As an optional implementation manner, an outer steel pipe transverse connection assembly 8 is arranged between two adjacent foundation pit outer temporary steel pipe columns 5 along the transverse bridge direction and/or along the bridge direction (the bridge direction is the length direction of the bridge body), and preferably, an outer steel pipe transverse connection assembly 8 is arranged between two adjacent foundation pit outer temporary steel pipe columns 5 along the transverse bridge direction; include a foundation ditch in the interim steel-pipe column 6 in one row of interim steel-pipe column that forms along the horizontal bridge direction, set up interior steel pipe transverse connection subassembly 16 and/or set up interior steel pipe transverse connection subassembly 16 along setting up between the interim steel-pipe column 6 in two adjacent foundation ditches along the bridge direction between the interim steel-pipe column 6 outside the adjacent foundation ditch of horizontal bridge direction 5 and the foundation ditch, preferably set up interior steel pipe transverse connection subassembly 16 along setting up between the interim steel-pipe column 6 in the adjacent interim steel-pipe column 5 outside the adjacent foundation ditch of horizontal bridge direction and the foundation ditch. Referring to fig. 5, an outer steel tube transverse connection assembly 8 and an inner steel tube transverse connection assembly 16 are illustrated, which can improve the stability of the support system.
The outer steel pipe transverse connecting assembly 8 is specifically explained as follows: referring to fig. 5, outer steel pipe transverse connection 8 includes horizontal connectors and inclined connectors, and two horizontal connectors set up along the direction of height interval, and horizontal connectors's both ends are connected with two adjacent outer interim steel-pipe columns 5 of foundation ditch respectively, and two horizontal connectors are connected to the inclined connectors, and inclined connectors and two horizontal connectors form "Z" style of calligraphy, and inclined connectors and horizontal connectors adopt 20 channel-section steel materials.
The inner steel pipe transverse connection assembly 16 is specifically explained as follows: referring to fig. 5, the inner steel tube transverse connection assembly 16 includes two horizontal connection portions and two inclined connection portions, the two horizontal connection portions are arranged at intervals along the height direction, two ends of the horizontal connection portions are respectively connected with the outer temporary steel tube column 5 of the foundation pit and the inner temporary steel tube column 6 of the foundation pit, the inclined connection portions are connected with the two horizontal connection portions and the two inclined connection portions to form an x shape, and the inclined connection portions and the horizontal connection portions are made of 20 channel steel materials.
As an optional implementation mode, the upper end and the lower end of the temporary steel pipe column 5 outside the foundation pit are respectively and fixedly connected with the bar-shaped concrete foundation 1 and the distribution beam 9 through flange plates; an anchor bolt is reserved between the bottom flange plate and the strip-shaped concrete foundation 1. A pile foundation 3 for tying the temporary steel pipe column is arranged in the foundation pit, and a temporary steel pipe column 6 in the foundation pit is supported on the pile foundation 3 of the temporary steel pipe column.
As an alternative embodiment, the distribution beam 9 is an I45I-beam distribution beam; the distributing beams 9 extend in the transverse direction of the bridge, and a plurality of rows of distributing beams 9 are arranged along the bridge direction. Referring to fig. 5, the distribution beam 9 is illustrated.
As an optional implementation mode, the full-space support 11 adopts the existing socket-joint type disc buckle type steel pipe support, the full-space support 11 comprises an adjustable base, an upright rod, a cross rod, an inclined rod and an adjustable bracket, the connection form of the full-space support 11 adopts the disc-shaped buckle disc to be locked and fixed with the caliper type wedge buckle, the installation speed is high, and the precision is high.
A method for constructing a ramp bridge combined supporting system constructed in parallel with an underground complex comprises the following steps:
s1, constructing a strip concrete foundation 1 of the temporary steel pipe column of the ramp bridge combined support system and a pile foundation of the temporary steel pipe column of the ramp bridge combined support system in the underground complex foundation pit;
s2, constructing a temporary steel pipe column of the ramp bridge combined supporting system;
and S3, building a ramp bridge combined supporting system.
As an optional implementation manner, in step S1, a pile foundation 3 of the temporary steel pipe column of the ramp bridge combined support system located in the foundation pit adopts a Φ 1000 cast-in-place pile; regarding the construction of the bar-shaped concrete foundation 1: before construction, reinforcing the stratum below the strip-shaped concrete foundation 1 to meet the requirement of the bearing capacity of the foundation; the size of the strip-shaped concrete foundation 1 is required to meet the bearing capacity requirements of the ramp bridge body and the supporting system, and the strip-shaped concrete foundation 1 is poured by C35 concrete.
In step S2, a steel pipe with the diameter of 800mm and the wall thickness of 16mm is adopted as the temporary steel pipe column; and connecting each row of adjacent temporary steel pipe columns by using a transverse connecting assembly (the transverse connecting assembly comprises an outer steel pipe transverse connecting assembly 8 and an inner steel pipe transverse connecting assembly 16).
As an optional implementation manner, step S3 specifically includes the following contents:
1) the distribution beam 9 is installed at the top end of the temporary steel pipe column
The distributing beam 9 and the top end of the temporary steel pipe column are welded and fixed together, the distributing beam 9 is required to be horizontal in the installation process, the heights of all rows are required to be uniform, and the Bailey beam 10 and contact points of the Bailey beam are not suspended in the air;
2) mounting of a bailey beam 10
Firstly, assembling the bailey frames on the ground, grouping and connecting the bailey frames, and marking the mounting positions of the bailey frames on the distribution cross beam 9 at intervals of 90cm along the direction of the cross bridge by using red paint; hoisting the connected bailey frames in place by using a truck crane according to the sequence of the middle part and the two sides;
3) a full support 11 is set up
The full-hall support is erected by adopting a socket type disc buckle type steel pipe support.
A ramp bridge and underground complex structure parallel construction method comprises the following steps:
s1, constructing a surrounding fender pile 2 and a bearing pile 4 of a permanent steel pipe column in the underground complex foundation pit, a strip-shaped concrete foundation 1 of a ramp bridge combined supporting system temporary steel pipe column, and a pile foundation 3 of the ramp bridge combined supporting system temporary steel pipe column in the foundation pit;
s2, constructing a temporary steel pipe column of the ramp bridge combined supporting system and a permanent steel pipe column 7 of the underground complex structure;
step S3, building a ramp bridge combined supporting system;
and S4, synchronously constructing the underground complex structure and pouring the ramp bridge body.
Referring to fig. 1, the following is specifically described with respect to step S1:
1) adopting a phi 1000 bored pile as a surrounding pile 2 in the underground complex foundation pit, and setting a reasonable embedding depth;
2) for the strip-shaped concrete foundation 1 of the temporary steel pipe column of the ramp bridge supporting system positioned outside the underground complex foundation pit, the stratum below the strip-shaped foundation is reinforced before construction so as to meet the bearing capacity requirement of the foundation, the size of the strip-shaped concrete foundation 1 is required to meet the bearing capacity requirements of a beam body and a supporting system, the strip-shaped concrete foundation 1 is poured by C35 concrete, and the steel pipe column can be installed after the strength reaches 80%;
3) a pile foundation 3 of the temporary steel pipe column of the ramp bridge combined support system positioned in the foundation pit adopts a bored pile with a large diameter phi 1000;
4) the bearing pile 4 of the underground complex permanent steel pipe column adopts a phi 1500 large-diameter cast-in-situ bored pile.
Referring to fig. 2, the following is specifically explained about step S2:
1) the temporary steel pipe column of the construction ramp bridge combined supporting system comprises a temporary steel pipe column (a temporary steel pipe column 5 outside the foundation pit) which is positioned outside the foundation pit and supported on the bar-shaped concrete foundation 1, and a temporary steel pipe column (a temporary steel pipe column 6 inside the foundation pit) which is positioned inside the foundation pit and supported on the pile foundation.
The temporary steel pipe column 6 and the permanent steel pipe column 7 are arranged in the foundation pit separately; the temporary steel pipe column and the permanent steel pipe column 7 are both made of steel pipes with the diameter of 800mm and the wall thickness of 16 mm.
2) A flange plate is welded at the lower part of the temporary steel pipe column 5 outside the foundation pit, and a top flange is welded at the upper part of the temporary steel pipe column; the distance between the temporary steel pipe columns 5 outside the foundation pit is 2.5-4 m, an automobile crane is adopted for installation, and a bottom flange plate and a strip-shaped concrete foundation 1 are reserved with anchor bolts; and connecting each row of adjacent temporary steel pipe columns by using a transverse connecting assembly (the transverse connecting assembly comprises an outer steel pipe transverse connecting assembly 8 and an inner steel pipe transverse connecting assembly 16), wherein 20 steel channels are adopted as the transverse connecting assembly 8.
Referring to fig. 3, the following is specifically explained about step S3:
in step S3, the construction of the ramp bridge combined support system includes the installation of the distribution beam 9, the beret beam 10 and the full hall support 11.
1) The distribution beam 9 is arranged at the top end of the temporary steel pipe column
The distribution beam 9 is made of I45I-shaped steel, the distribution beam 9 and the top end of the temporary steel pipe column 5 outside the foundation pit are welded and fixed together, the distribution beam 9 is guaranteed to be horizontal in the installation process, the heights of all rows are unified, and the Bailey beam 10 and contact points of the Bailey beam are guaranteed not to be suspended.
2) Mounting of a bailey beam 10
Firstly, assembling the bailey frames on the ground, connecting the bailey frames in groups, and marking the mounting positions of the bailey frames on the distribution cross beam 9 at intervals of 90cm along the direction of the transverse bridge by using red paint; hoisting the connected Bailey frames in place by using a truck crane according to the sequence of the middle part and the two sides (Bailey beams extend along the length direction of the bridge body, and a plurality of Bailey beams are distributed at intervals along the length direction of the distribution cross beam 9); when the single group of Bailey beams are hoisted, two hoisting points are required to be arranged and are symmetrically distributed, the Bailey beams are kept balanced in the hoisting process so as to avoid torsional stress generated in the hoisting process, and 14mm steel plates 12 are laid on the Bailey beams 10 after the Bailey beams are completely erected.
3) A full support 11 is set up
The full-hall support 11 is erected by adopting a phi 60 series socket-type disc buckle type support of the existing full-hall scaffold. Scaffolding is generally composed of adjustable bases, uprights, crossbars, diagonals and adjustable brackets. The frame body is connected in a mode that a disc-shaped buckle disc is locked and fixed with a caliper type wedge buckle, the installation speed is high, and the precision is high. The specification of the bracket material is as follows: the bracket adopts a coil buckle type steel pipe frame, five specifications of 0.5m, 1.0m, 1.5m, 2.0m and 2.5m are adopted for the vertical rod, three specifications of 0.6m, 0.9m and 1.5m are adopted for the horizontal rod, and an adjustable support is adopted for the top support and the bottom support.
Referring to fig. 4 to 6, the following is specifically explained about step S4:
the underground complex structure adopts a split construction mode of 'one-layer negative open-cut and sequential-excavation and two-layer negative cover-cut and sequential-construction'. Therefore, regarding step S4, the following is included:
s41, synchronously constructing a negative layer of the underground complex structure and pouring a ramp bridge body;
and step S42, constructing the negative second floor of the underground complex structure.
Step S41 specifically includes the following:
1) executing a bridge installation design drawing for pouring the ramp bridge body;
2) and (3) carrying out one-layer construction on the underground structure: excavating a layer of negative earthwork from top to bottom to the position of a middle plate, erecting a steel support, constructing the layer of negative middle plate by utilizing an earth mould, sequentially constructing a side wall, a top plate and a top longitudinal beam, wherein the permanent steel pipe column 7 does not penetrate through the top plate, and arranging a disc beam column node;
step S42 specifically includes the following: and (4) dismantling the bridge combined supporting system, and then carrying out earthwork excavation and pouring construction of the negative two layers of the underground complex structure.
Note that fig. 6 is a cross section at the position of the pier 14, and therefore, the pier 14, the pedestal 17, and the like are illustrated.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The ramp bridge combined supporting system built in parallel with an underground complex is characterized by comprising a bar-shaped concrete foundation (1), a steel pipe column, a distribution cross beam (9), a Bailey beam (10) and a full-space support (11), wherein the steel pipe column comprises an outer temporary steel pipe column (5) of a foundation pit and an inner temporary steel pipe column (6) of the foundation pit, the outer temporary steel pipe column (5) of the foundation pit is arranged on the bar-shaped concrete foundation (1), the inner temporary steel pipe column (6) of the foundation pit is arranged in the foundation pit of the underground complex, the outer temporary steel pipe column (5) of the foundation pit and the top of the inner temporary steel pipe column (6) of the foundation pit are arranged on the distribution cross beam (9), the Bailey beam (10) is supported on the distribution cross beam (9), and the full-space support (11) is supported on the Bailey beam (10).
2. The ramp bridge combined supporting system built in parallel with an underground complex according to claim 1, wherein a row of the temporary steel pipe columns is formed along a transverse bridge direction, and the row of the temporary steel pipe columns comprises at least one temporary steel pipe column (6) inside the foundation pit and a plurality of temporary steel pipe columns (5) outside the foundation pit; and forming a plurality of rows of temporary steel pipe columns along the bridge direction.
3. The ramp bridge combined supporting system built in parallel with an underground complex according to claim 2, wherein an external steel pipe transverse connecting component (8) is arranged between two foundation pit external temporary steel pipe columns (5) adjacent along the transverse bridge direction and/or along the downbridge direction;
one row of temporary steel pipe column (6) in the foundation ditch is included in the temporary steel pipe column along the horizontal bridge direction, adjacent along the horizontal bridge direction the outer temporary steel pipe column (5) of foundation ditch with set up interior steel pipe transverse connection subassembly (16) between the temporary steel pipe column (6) in the foundation ditch, and/or along adjacent two along the horizontal bridge direction set up interior steel pipe transverse connection subassembly (16) between the temporary steel pipe column (6) in the foundation ditch.
4. The ramp bridge combined supporting system built in parallel with an underground complex according to claim 3, wherein the outer steel pipe transverse connecting assembly (8) comprises horizontal connecting pieces and inclined connecting pieces, the two horizontal connecting pieces are arranged at intervals along the height direction, two ends of each horizontal connecting piece are respectively connected with two adjacent temporary steel pipe columns (5) outside the foundation pit, the inclined connecting pieces are connected with the two horizontal connecting pieces, the inclined connecting pieces and the two horizontal connecting pieces form a Z shape, and the inclined connecting pieces and the horizontal connecting pieces are made of channel steel.
5. The ramp bridge combined supporting system built in parallel with an underground complex according to claim 3, wherein the inner steel tube transverse connecting assembly (16) comprises two horizontal connecting parts and two inclined connecting parts, the two horizontal connecting parts are arranged at intervals along the height direction, two ends of each horizontal connecting part are respectively connected with the temporary steel tube column (5) outside the foundation pit and the temporary steel tube column (6) inside the foundation pit, the inclined connecting parts are connected with the two horizontal connecting parts, the two inclined connecting parts form an X shape, and the inclined connecting parts and the horizontal connecting parts are made of channel steel.
6. The ramp bridge combined supporting system built in parallel with an underground complex according to claim 1, wherein the temporary steel pipe columns (5) outside the foundation pit and the temporary steel pipe columns (6) inside the foundation pit are all made of steel pipes with the diameter of 800mm and the wall thickness of 16 mm.
7. The ramp bridge combined supporting system built in parallel with an underground complex according to any one of claims 1 to 6, wherein the upper and lower ends of the temporary steel pipe column (5) outside the foundation pit are fixedly connected with the bar-shaped concrete foundation (1) and the distribution cross beam (9) through flanges respectively.
8. The ramp bridge combined supporting system built in parallel with an underground complex as claimed in claim 7, wherein an anchor bolt is reserved between the flange at the bottom of the temporary steel pipe column (5) outside the foundation pit and the bar-shaped concrete foundation (1).
9. Ramp bridge combined support system built in parallel with an underground complex according to any of claims 1-6, characterised in that the distribution beams (9) are I-steel distribution beams; the distribution cross beam (9) extends along the transverse bridge direction, and a plurality of rows of distribution cross beams (9) are arranged along the bridge direction.
10. The ramp bridge combined supporting system built in parallel with an underground complex according to any one of claims 1 to 6, wherein the full hall support (11) adopts a socket type coil buckle type steel pipe support.
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| CN202123072271.2U CN216586664U (en) | 2021-12-08 | 2021-12-08 | Ramp bridge combined supporting system constructed in parallel with underground complex |
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| CN202123072271.2U CN216586664U (en) | 2021-12-08 | 2021-12-08 | Ramp bridge combined supporting system constructed in parallel with underground complex |
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