CN216712609U - Novel cover digs interim road surface structure of construction - Google Patents
Novel cover digs interim road surface structure of construction Download PDFInfo
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- CN216712609U CN216712609U CN202120426806.2U CN202120426806U CN216712609U CN 216712609 U CN216712609 U CN 216712609U CN 202120426806 U CN202120426806 U CN 202120426806U CN 216712609 U CN216712609 U CN 216712609U
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Abstract
The utility model relates to a novel temporary pavement structure for cover and excavation construction, which comprises: the supporting structure comprises a plurality of main supporting trusses crossing the foundation pit, and a panel is laid on the top of each main supporting truss; the connecting structure comprises an L-shaped base, and the L-shaped base comprises a vertical back wall part and a horizontal toe part; the pipeline supporting structure comprises a plurality of supporting beams, and ropes for hanging pipelines are connected to the bottoms of the supporting beams. The utility model can realize the modularized processing, manufacturing and hoisting operation; the panels are prefabricated and hoisted in a partitioning mode, and the construction concept of the assembled bridge is met; the problem of large traffic pressure during urban subway construction can be solved; the method is still suitable for foundation pit construction with the span of more than 25m and does not need upright post support; the main supporting truss structure has double bearing functions; the connecting structure of the panel and the main supporting truss solves the problems that the number of soil taking and abandoning openings is large in the operation of the subway deep foundation pit, and small equipment is difficult to transport; the pipeline supporting structure solves the problem of moving and changing pipelines in underground narrow space.
Description
Technical Field
The utility model relates to the technical field of construction supporting structures, in particular to a novel temporary pavement structure for cover-excavation construction.
Background
In order to reduce the traffic pressure of urban traffic, the excavation construction of urban subway foundation pits is usually carried out by adopting a cover excavation method. In traditional subway foundation ditch construction, interim road surface structure adopts the structure of stand crossbeam with prefabricated apron more, because the stand of this structure need pierce through subway structure's top end medium plate, is very unfavorable to construction convenience and structural waterproof nature. The utility model has the advantages of one kind has appeared among the prior art and has utilized 64 for military use roof beam to make the girder, has laid the novel road surface structure of decking on the girder, and this structure has great technical progress than stand crossbeam adds prefabricated apron structure, still has following problem:
the first problem is that 64-type military beams need to be hoisted piece by piece, and after the hoisting of the military beams is finished, longitudinal and transverse connecting structures are installed to ensure the overall stability, so that the workload is large;
the second problem is that the 64-type military beam can span about 23m of the maximum span, and the vertical columns are required to be arranged in the foundation pit when the span exceeds 25m, so that the construction form of the temporary pavement structure for the foundation pit with the span larger than 25m is not economical;
the third problem is that the spacing between 64-type military beam sets is generally not more than 2m, the requirement of foundation pit soil taking and transporting cannot be met after the bridge deck structure is covered on the military beam sets, a fixed soil taking and transporting port needs to be found, and the comprehensive transport distance of the whole longitudinal line is increased;
the fourth problem is that the 64-type military beam structure mainly bears bending moment shearing force and has small resistance to axial pressure, so that a transverse foundation pit inner supporting structure needs to be arranged below the 64-type military beam structure to prevent the military beam from bearing large axial pressure, and the process is complicated.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a novel temporary pavement structure for cover and excavation construction.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a novel lid digs construction temporary pavement structure, includes:
the supporting structure comprises a plurality of main supporting trusses crossing the foundation pit, two ends of each main supporting truss are supported at the top of the underground diaphragm wall of the foundation pit, two adjacent main supporting trusses are fixedly connected through a reinforcing structure, and a panel is laid at the top of each main supporting truss;
the connecting structure is used for connecting the supporting structure and the diaphragm wall and comprises an L-shaped base, the L-shaped base is positioned at the top of the diaphragm wall and comprises a vertical back wall part and a horizontal toe part, the end surface of the main supporting truss is abutted against the side wall of the back wall, and the bottom surfaces of the two ends of the main supporting truss are supported on the toe part;
pipeline bearing structure, pipeline bearing structure include many supporting beam, and the both ends of a supporting beam are set up on two adjacent main supporting trusses, and it has the rope that is used for articulating the pipeline to even to prop up a supporting beam bottom.
Furthermore, the main support truss comprises an upper chord member arranged in a full length mode, a lower chord member arranged in a segmented mode and a plurality of web members arranged between the upper chord member and the lower chord member, adjacent lower chord members are connected through a node plate, and the web members are obliquely arranged between the upper chord member and the lower chord member to form a plurality of triangular and/or trapezoidal structures.
Further, the upper chord is a double-spliced I-shaped steel structure.
Furthermore, the panel is a rectangular steel plate, and two ends of the panel are respectively fixedly connected with the tops of the two adjacent upper chords.
Furthermore, the reinforcing structure comprises a middle reinforcing structure and an end reinforcing structure, the middle reinforcing structure comprises a plurality of middle reinforcing units, each middle reinforcing unit comprises an upper connecting beam and a lower connecting beam, two ends of the upper connecting beam are fixedly connected with the side walls of the two adjacent upper chords respectively, two ends of the lower connecting beam are fixedly connected with the two adjacent lower chords and the gusset plate thereof respectively, the two connecting beams are fixedly connected through two inclined struts between the two connecting beams, and the two inclined struts and one of the connecting beams form a triangular structure; the end reinforcing structure is located at the end of the main supporting truss and comprises a plurality of connecting trusses, and two ends of each connecting truss are fixedly connected with two upper chord side walls which are connected with each other respectively.
Furthermore, a pre-embedded plate is pre-embedded in the back wall part of the L-shaped base, a base plate is arranged between the pre-embedded plate and the upper chord, and the base plate is fixedly connected with the end part of the upper chord.
Furthermore, a cushion block is arranged at the top of the toe part of the L-shaped base, a support is arranged at the top of the cushion block, and the bottom surface of the end part of the upper chord is supported on the support.
Furthermore, two ends of the supporting beam are supported on the lower chord, and two ends of the bottom of the supporting beam are respectively provided with a limiting block.
Furthermore, the rope is a steel strand which is arranged in a U shape, and two ends of the steel strand are respectively connected with two different supporting beams through conical anchors.
Furthermore, the middle part of the steel strand is sleeved with an HDPE sheath for protecting the pipeline.
The utility model has the beneficial effects that:
(1) the utility model can realize the modularized processing, manufacturing and hoisting operation; the panels are prefabricated and hoisted in a partitioning mode, and the construction concept of the assembled bridge is met;
(2) the utility model can solve the problem of large traffic pressure during urban subway construction;
(3) the utility model has strong applicability, is still suitable for foundation pit construction with the span of more than 25m and does not need upright post support;
(4) the main support truss structure has double bearing functions, and is a bearing structure of a traveling load and a construction load and a first cross brace of a foundation pit ground connecting wall enclosure structure;
(5) the panel and the main support truss are connected by the bolts which are convenient to disassemble and assemble, so that the problems that the number of soil taking and abandoning openings is large and small equipment is difficult to transport in the operation of the subway deep foundation pit are effectively solved; the unfixed soil taking and transporting port effectively reduces the comprehensive soil taking and transporting distance of the longitudinal line, thereby reducing the construction cost;
(6) the pipeline supporting structure provides a multipoint continuous supporting structure for the pipeline below, and effectively solves the problem of pipeline moving and changing in the underground narrow space.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a support structure;
FIG. 3 is a schematic structural view of a connection structure;
FIG. 4 is a schematic structural view of a pipeline support structure;
in the figure: 1-a support structure; 11-a main support truss; 111-upper chord; 112-lower chord; 113-web member; 114-gusset plate; 12-a reinforcing structure; 121-connecting beam; 122-diagonal bracing; 123-connecting trusses; 13-a panel; 2-a linking structure; a 21-L shaped base; 22-pre-embedded plates; 23-a backing plate; 24-a cushion block; 25-a support; 3-a pipeline support structure; 31-a support beam; 32-a rope; 33-a limiting block;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in the figure, a novel cover digs construction temporary pavement structure includes:
the supporting structure 1 comprises a plurality of main supporting trusses 11 crossing a foundation pit, two ends of each main supporting truss 11 are supported at the top of a ground connection wall of the foundation pit, two adjacent main supporting trusses 11 are fixedly connected through a reinforcing structure 12, and a panel 13 is laid at the top of each main supporting truss 11;
the connecting structure 2 is used for connecting the supporting structure 1 and the diaphragm wall, the connecting structure 2 comprises an L-shaped base 21, the L-shaped base 21 is positioned at the top of the diaphragm wall, the L-shaped base 21 comprises a vertical back wall part and a horizontal toe part, the end surface of the main supporting truss 11 is opposite to the side wall of the back wall part, and the bottom surfaces of two ends of the main supporting truss 11 are supported on the toe part;
the pipeline supporting structure 3, the pipeline supporting structure 3 includes a plurality of supporting beams 31, two ends of the supporting beam 31 are set up on two adjacent main supporting trusses 11, the bottom of the supporting beam 31 is connected with a rope 32 for hanging the pipeline.
Further, the main supporting truss 11 includes an upper chord 111 disposed throughout the length, a lower chord 112 disposed in a segmented manner, and a plurality of web members 113 therebetween, wherein adjacent lower chord 112 segments are connected by a node plate 114, the web members 113 are disposed between the upper chord 111 and the lower chord 112 in an inclined manner to form a plurality of triangular and/or trapezoidal structures, and the lower chord 112 is shorter than the corresponding upper chord 111, so as to form the inverted trapezoidal main supporting truss 11 structure.
Further, the upper chord 111 is of a double-spliced I-shaped steel structure.
Further, panel 13 is rectangular steel sheet and both ends respectively through bolt and two adjacent upper chord 111 tops fixed connection, during the construction, can be with panel 13 regional planning for passing through district and construction area, can remove the panel 13 of construction area temporarily according to the construction needs, for borrowing soil or equipment transport provide convenient condition in the foundation ditch, the comprehensive fortune distance of borrowing soil fortune that has effectively reduced vertical circuit to play the effect of practicing thrift construction cost.
Further, the reinforcing structure 12 includes a middle reinforcing structure and an end reinforcing structure, the middle reinforcing structure includes a plurality of middle reinforcing units, each middle reinforcing unit includes an upper connecting beam 121 and a lower connecting beam 121, two ends of the upper connecting beam 121 are respectively and fixedly connected with the side walls of the two adjacent upper chords 111, two ends of the lower connecting beam 121 are respectively and fixedly connected with the two adjacent lower chords 112 and the gusset plate 114 thereof, the two connecting beams 121 are fixedly connected through two diagonal braces 122 between the two connecting beams, and the two diagonal braces 122 and one of the connecting beams 121 form a triangular structure; the end reinforcing structure is located at the end of the main supporting truss 11, the end reinforcing structure comprises a plurality of connecting trusses 123, two ends of each connecting truss 123 are fixedly connected with the side walls of the two upper chords 111 which are connected, and during construction, every 5 main supporting trusses 11 are used as a supporting unit, and all the main supporting trusses 11 of one supporting unit are connected into a whole by using the reinforcing structure 12.
Further, a pre-embedded plate 22 is pre-embedded in a back wall portion of the L-shaped base 21, a backing plate 23 is arranged between the pre-embedded plate 22 and the upper chord 111, and the backing plate 23 is fixedly connected with an end portion of the upper chord 111.
Furthermore, a cushion block 24 is arranged at the top of the toe part of the L-shaped base 21, a support 25 is arranged at the top of the cushion block 24, the bottom surface of the end part of the upper chord 111 is supported on the support 25, the L-shaped base 21 connects different supporting units and different main supporting trusses 11 in the same supporting unit into a whole, so that the lateral stability of the supporting structure 1 is improved, the stress on the end part of the supporting structure 1 is more uniform, and the driving comfort is greatly improved.
Further, two ends of the support beam 31 are supported on the lower chord 112, and two ends of the bottom of the support beam 31 are respectively provided with a stopper 33.
Further, the rope 32 is a steel strand, the steel strand is arranged in a U shape, two ends of the steel strand are connected with two different supporting beams 31 through conical anchors respectively, one steel strand forms a suspension unit, a multi-point continuous suspension structure can be formed through a plurality of suspension units in the longitudinal direction, and the problem of moving and changing of underground narrow space pipelines can be effectively solved.
Furthermore, the middle part of the steel strand is sleeved with an HDPE sheath for protecting the pipeline.
The utility model has been described in connection with the accompanying drawings, it is to be understood that the utility model is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the utility model, and all such modifications and variations are within the scope of the utility model.
Claims (10)
1. The utility model provides a novel cover digs construction temporary pavement structure which characterized in that includes:
the supporting structure (1) comprises a plurality of main supporting trusses (11) crossing the foundation pit, two ends of each main supporting truss (11) are supported at the top of the ground connection wall of the foundation pit, two adjacent main supporting trusses (11) are fixedly connected through a reinforcing structure (12), and a panel (13) is laid at the top of each main supporting truss (11);
the connecting structure (2) is used for connecting the supporting structure (1) and the diaphragm wall, the connecting structure (2) comprises an L-shaped base (21), the L-shaped base (21) is located at the top of the diaphragm wall, the L-shaped base (21) comprises a vertical back wall part and a horizontal toe part, the end face of the main supporting truss (11) is abutted against the side wall of the back wall, and the bottom faces of the two ends of the main supporting truss (11) are supported on the toe part;
pipeline bearing structure (3), pipeline bearing structure (3) include many supporting beam (31), and the both ends of supporting beam (31) are set up on two adjacent main supporting truss (11), and supporting beam (31) bottom even has rope (32) that are used for articulating the pipeline.
2. The novel cover and cut construction temporary pavement structure according to claim 1, wherein the main supporting truss (11) comprises an upper chord member (111) arranged in a full length, a lower chord member (112) arranged in a segmented manner and a plurality of web members (113) arranged between the upper chord member and the lower chord member, adjacent segments of the lower chord member (112) are connected through a node plate (114), and the web members (113) are obliquely arranged between the upper chord member (111) and the lower chord member (112) to form a plurality of triangular and/or trapezoidal structures.
3. The novel cover and cut construction temporary pavement structure of claim 2, wherein the upper chord (111) is of a double-split I-shaped steel structure.
4. The novel cover and cut construction temporary pavement structure according to claim 3, wherein the panel (13) is a rectangular steel plate and both ends of the panel are fixedly connected with the tops of two adjacent upper chords (111) respectively.
5. The novel temporary pavement structure for cover and excavation construction according to claim 4, wherein the reinforcing structure (12) comprises a middle reinforcing structure and an end reinforcing structure, the middle reinforcing structure comprises a plurality of middle reinforcing units, each middle reinforcing unit comprises an upper connecting beam (121) and a lower connecting beam (121), two ends of each upper connecting beam (121) are fixedly connected with the side walls of the two adjacent upper chords (111), two ends of each lower connecting beam (121) are fixedly connected with the two adjacent lower chords (112) and the gusset plate (114), the two connecting beams (121) are fixedly connected through two inclined struts (122) between the two connecting beams, and the two inclined struts (122) and one connecting beam (121) form a triangular structure; the end reinforcing structure is located the tip of main tributary strut truss (11), and the end reinforcing structure includes many and connects truss (123), connects the both ends of truss (123) respectively with two last chord member (111) lateral walls fixed connection who links to each other.
6. The novel cover and dig construction temporary pavement structure of claim 5, wherein the back wall part of the L-shaped base (21) is embedded with an embedded plate (22), a backing plate (23) is arranged between the embedded plate (22) and the upper chord (111), and the backing plate (23) is fixedly connected with the end part of the upper chord (111).
7. The cover and cut construction temporary pavement structure according to claim 5, wherein a cushion block (24) is provided on the top of the toe portion of the L-shaped base (21), a support (25) is provided on the top of the cushion block (24), and the bottom surface of the end portion of the upper chord (111) is supported on the support (25).
8. The cover and cut construction temporary pavement structure according to any one of claims 2 to 7, wherein both ends of the support beam (31) are supported on the lower chord (112), and both ends of the bottom of the support beam (31) are provided with a stopper (33).
9. The cover and cut construction temporary pavement structure according to any one of claims 1 to 7, wherein the ropes (32) are steel strands which are arranged in a U-shape and are connected at both ends to two different support beams (31) by means of tapered anchors, respectively.
10. The novel cover and cut construction temporary pavement structure as claimed in claim 9, wherein the middle of the steel strand is sleeved with a HDPE sheath for protecting the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120426806.2U CN216712609U (en) | 2021-02-26 | 2021-02-26 | Novel cover digs interim road surface structure of construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120426806.2U CN216712609U (en) | 2021-02-26 | 2021-02-26 | Novel cover digs interim road surface structure of construction |
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| CN216712609U true CN216712609U (en) | 2022-06-10 |
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| CN202120426806.2U Active CN216712609U (en) | 2021-02-26 | 2021-02-26 | Novel cover digs interim road surface structure of construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116280898A (en) * | 2023-05-23 | 2023-06-23 | 中国建筑第六工程局有限公司 | Deep foundation pit circulation soil sampling device |
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2021
- 2021-02-26 CN CN202120426806.2U patent/CN216712609U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116280898A (en) * | 2023-05-23 | 2023-06-23 | 中国建筑第六工程局有限公司 | Deep foundation pit circulation soil sampling device |
| CN116280898B (en) * | 2023-05-23 | 2023-08-18 | 中国建筑第六工程局有限公司 | Deep foundation pit circulation soil sampling device |
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