CN216275712U - Corner bracing construction structures - Google Patents
Corner bracing construction structures Download PDFInfo
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- CN216275712U CN216275712U CN202121871937.8U CN202121871937U CN216275712U CN 216275712 U CN216275712 U CN 216275712U CN 202121871937 U CN202121871937 U CN 202121871937U CN 216275712 U CN216275712 U CN 216275712U
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Abstract
The utility model discloses a diagonal bracing construction structure at a corner, which comprises a foundation pit dug at a set position, wherein a plurality of steel sheet piles are dug underground around the foundation pit to form a sheet pile wall around the foundation pit, a plurality of I-steel vertical supporting piles are respectively fixed at preset positions in the foundation pit surrounded by the plurality of steel sheet piles, a guide ditch is dug along the inner side ground of the steel sheet pile positions, a plurality of triangular supports are welded on the bottom base surface of the guide ditch at intervals, a plurality of steel purlins are continuously fixed on the triangular supports and are welded with the steel sheet piles, a plurality of longitudinal steel pipe supports are welded between the steel purlins at the front side and the rear side of the foundation pit at intervals, and a plurality of transverse steel pipe supports are welded between the two longitudinal steel pipe supports of each group of longitudinal steel pipe supports at intervals. The cross part of each longitudinal steel pipe support and each transverse steel pipe support is connected with the top of the I-shaped steel vertical supporting pile in a welding mode, and the structure is stable and reliable in force transfer.
Description
Technical Field
The utility model relates to an inner support construction structure, in particular to a diagonal brace construction structure at a corner of a hospital basement.
Background
The deep foundation pit in China is mainly characterized in that: the scale of the foundation pit is larger and larger, the main building and the skirt building are connected into a whole, and the large-area deep foundation pit is more and more due to frequent occurrence of a large-area underground garage and underground leisure center integrated development mode; the excavation depth of the foundation pit is increased; the urban development is gradually scaled, the foundation pit field is more compact, and some buildings are tightly attached to red lines, so that the construction field is almost not arranged at the periphery of the foundation pit of the building; the surrounding environment of the foundation pit is complex and sensitive and is adjacent to a large number of pipelines, buildings and subway structures.
The application number is 201820553252.0's chinese patent discloses "stable steel encloses purlin braced system in subway station deep basal pit excavation process", include the bracket that sets up on the side wall of excavation foundation ditch with the interval, the steel of assembling on the bracket encloses the purlin, enclose purlin and right side steel at left side steel and enclose and be provided with steel supporting beam between the purlin, steel supporting beam's steel supporting beam stiff end and right side steel enclose the medial surface fixed connection of purlin, install the sleeve on steel supporting beam's loose end, be provided with the piston in the sleeve, the welding has the L shape lifting hook on the outside end of piston, the upper end of L shape lifting hook is the overlap joint on left side steel encloses the purlin. The method is suitable for subway stations, the general enclosure of the subway stations is a continuous wall, and the method is not suitable for the construction of a complex environment supporting system of a hospital basement of which the foundation pit enclosure structure is a steel sheet pile.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the diagonal brace construction structure at the corner, which has the advantages of low construction cost, no influence on the layout of an underground structure, turnover use, construction speed acceleration, convenience, rapidness and high construction efficiency.
The utility model relates to a corner diagonal bracing construction structure, which comprises a foundation pit dug at a set position, wherein a plurality of steel sheet piles are arranged around the foundation pit in a driving mode to the ground so as to form a sheet pile wall around the foundation pit, a plurality of I-steel vertical supporting piles are respectively fixed at the preset positions in the foundation pit surrounded by the plurality of steel sheet piles, and the lower end soil penetration depth of each I-steel vertical supporting pile is 9 m; the steel sheet pile foundation structure is characterized in that a guide channel is excavated along the inner side ground of a steel sheet pile position, a plurality of triangular supports are welded on the bottom surface of the guide channel at intervals, a plurality of steel purlins are continuously fixed on the triangular supports and are welded with the steel sheet pile, the top elevations of the plurality of steel purlins are consistent with the elevation of the steel purlins marked on the steel sheet pile, the steel purlins are made of I-shaped steel, the upper flange plate and the lower flange plate of each steel purlin are horizontally arranged, and the top elevation of each steel purlin is 0.7-0.9 m below the ground; welding a plurality of stiffening plates between the upper and lower flange plates of the steel purlins at the intersection of the two steel purlins at each corner of the guide channel, and fixing an upper layer and a lower layer of haunched plates between the two steel purlins at each corner of the guide channel;
a plurality of longitudinal steel pipe supports are welded between the steel purlins on the front side and the rear side of the foundation pit at intervals from left to right, every two adjacent longitudinal steel pipe supports are respectively used as a group of longitudinal steel pipe supports, the two adjacent longitudinal steel pipe supports are arranged at intervals, a plurality of transverse steel pipe supports are welded between two longitudinal steel pipe supports of each group of longitudinal steel pipe supports at intervals in the front-back direction, the intersection of each longitudinal steel pipe support and each transverse steel pipe support is welded with the top of the I-shaped steel vertical supporting pile through a reinforcing steel bar, a plurality of horizontal inclined struts are welded between the two steel purlins at the corner position of each foundation pit at intervals from outside to inside in sequence, a plurality of longitudinal braces are welded between two adjacent horizontal diagonal braces, and the joint of each horizontal diagonal brace and the longitudinal brace is respectively welded with the top of the I-steel vertical support pile.
The connecting method of the joint part of the horizontal structure and the vertical structure directly influences the force transmission effect between the two stressed structures. The method of connecting the horizontal steel pipe supporting structure, the horizontal diagonal brace and the vertical structure by the steel enclosing purlin has good force transmission effect and stable and reliable structure. A plurality of horizontal inclined struts are welded between two steel enclosing purlins at corner positions of the foundation pit from outside to inside at intervals in sequence, and a stiffening triangular plate is welded at the end part of each horizontal inclined strut, so that the horizontal inclined struts are firmly installed on the steel enclosing purlins, and a firm enclosure system is formed. And the mechanical stress stability is ensured. And a second door-shaped stiffening plate is welded between the connecting positions of the stiffening triangular plate and the steel purlin to increase the stability.
Drawings
FIG. 1 is a schematic top view of a steel purlin and an armboard at a corner of an inclined strut construction structure at a corner according to the utility model;
FIG. 2 is a schematic top view of a steel pipe support and steel purlin of the diagonal bracing construction structure at a corner in a door-shaped connection manner;
FIG. 3 is a schematic top view of a horizontal diagonal bracing stiffening triangle and a steel purlin of the diagonal bracing construction structure at a corner according to the present invention;
FIG. 4 is a schematic elevation view of a steel pipe support and an I-steel vertical support pile connection of a diagonal bracing construction structure at a corner according to the present invention;
fig. 5 is a schematic plan view of a foundation pit of a diagonal bracing construction structure at a corner according to the present invention.
Detailed Description
The utility model is described in detail below with reference to the following figures and specific examples:
the utility model discloses a diagonal bracing construction structure at a corner, which is shown in the attached drawing and comprises a foundation pit dug at a set position, wherein a plurality of steel sheet piles 1 are arranged underground around the foundation pit so as to form a sheet pile wall around the foundation pit, and the preferred closed closure position of the sheet pile wall is selected at the corner of the short side of the foundation pit.
A plurality of I-shaped steel vertical support piles 2 are respectively fixed at preset positions in a foundation pit surrounded by a plurality of steel sheet piles, and the lower end soil penetration depth of each I-shaped steel vertical support pile 2 is 9 m; the inboard ground excavation in steel sheet pile 1 position has the guide ditch, and a plurality of A-frame of interval welding on the basal surface of guide ditch, be fixed with a plurality of steels in succession on A-frame and enclose purlin and a plurality of steel and enclose purlin and steel sheet pile 1 welded connection, a plurality of steels enclose the top elevation of purlin unanimous with the steel that marks on the steel sheet pile enclose purlin 4's elevation, the steel enclose the purlin be the I-steel, the steel enclose the upper and lower flange board level setting of purlin, the steel enclose the top elevation of purlin for 0.7 meters-0.9 meters below ground (as 0.7 meters, 0.8 meters, 0.9 meters etc.).
As an embodiment of the utility model, the depth of the guide channel is 1.5-1.6m below the ground, and the width of the guide channel is 3m-3.1 m; the advantages that the triangular bracket and the steel purlin are firmly and stably installed, and the stability of the whole foundation pit supporting system is ensured
A plurality of stiffening plates 5 are welded between the upper and lower flange plates of the steel purlins at the intersection of the two steel purlins at each corner of the guide channel, and an upper layer and a lower layer of haunched plates 6 are fixed between the two steel purlins 4 at each corner of the guide channel;
a plurality of longitudinal steel pipe supports 10 are welded between steel enclosing purlins on the front side and the rear side of a foundation pit at intervals, every two adjacent longitudinal steel pipe supports 10 are respectively used as a group of longitudinal steel pipe supports, every two adjacent groups of longitudinal steel pipe supports are arranged at intervals, a plurality of transverse steel pipe supports 8 are welded between every two longitudinal steel pipe supports of each group of longitudinal steel pipe supports at intervals, every intersection of the longitudinal steel pipe supports and the transverse steel pipe supports 8 is welded with the top 7 of the I-shaped steel vertical supporting pile 2 through a reinforcing steel bar 3, and a steel support anti-falling facility is formed.
Preferably, a first door-shaped stiffening plate 9 is welded between the joint of each longitudinal steel pipe support and the steel purlin, so that the stability is improved.
A plurality of horizontal inclined struts 11 are welded between two steel enclosing purlins at the corner position of each foundation pit from outside to inside at intervals in sequence, and a plurality of longitudinal struts 12 are welded between every two adjacent horizontal inclined struts. Preferably, a stiffening triangular plate 13 is welded at the end part of each horizontal diagonal brace 11, the stiffening triangular plate is triangular, and the side walls of two sides of the stiffening triangular plate are respectively connected with the steel surrounding purlin and the horizontal diagonal braces 11. The horizontal inclined strut is firmly arranged on the steel enclosing purlin to form a firm enclosing system. The angles of the stiffening triangular plate 13 and the horizontal inclined strut 11 are calculated through field test research, and the mechanical stress stability is ensured. Preferably, a second door-shaped stiffening plate 14 is welded between the connecting part of each stiffening triangular plate 13 and the steel purlin, so that the stability is improved.
The joint of each horizontal diagonal brace and each longitudinal brace is respectively connected with the top 7 of the I-steel vertical supporting pile 2 in a welding way.
The construction process adopting the structure is as follows:
(1) digging a foundation pit along the position of measurement and setting-out, then underground driving a plurality of steel sheet piles 1 in the four circumferential directions of the foundation pit to form a sheet pile wall around the foundation pit, correcting the verticality of the steel sheet piles by adopting an axis trimming method, and realizing closed closure of the sheet pile wall by adjusting the design length and the position of the closed axis of the sheet pile wall;
(2) i-shaped steel vertical supporting piles 2 are respectively fixed at preset positions in a foundation pit surrounded by a plurality of steel sheet piles;
(3) along the inboard ground excavation guide way in steel sheet pile 1 position to mark out on the steel sheet pile and wait that the steel of installation encloses purlin 4 elevation, then interval welding a plurality of A-frames on the basal plane of guide way, weld a plurality of steels in succession on the A-frame and enclose purlin and a plurality of steel and enclose purlin and 1 welded connection of steel sheet pile, a plurality of steels enclose the top elevation of purlin unanimously with the steel that marks out on the pile enclose purlin 4 elevation, the steel enclose the purlin be the I-steel, the steel enclose the upper and lower flange board level setting of purlin, the top elevation that the steel enclosed the purlin be 0.7 meters-0.9 meters below the ground.
(4) Welding a plurality of stiffening plates 5 between upper and lower flange plates at the intersection of two steel purlins at each corner of the guide channel, and fixing an upper layer of haunching plate 6 and a lower layer of haunching plate 6 between two steel purlins 4 at each corner of the guide channel;
(5) a plurality of longitudinal steel pipe supports 10 are welded between steel enclosing purlins on the front side and the rear side of a foundation pit at intervals, every two adjacent longitudinal steel pipe supports 10 are respectively used as a group of longitudinal steel pipe supports, every two adjacent groups of longitudinal steel pipe supports are arranged at intervals, a plurality of transverse steel pipe supports 8 are welded between every two longitudinal steel pipe supports of each group of longitudinal steel pipe supports at intervals, the intersection of each longitudinal steel pipe support and each transverse steel pipe support 8 is connected with the top 7 of an I-shaped steel vertical supporting pile 2 in a welding mode, the intersection of each longitudinal steel pipe support and each transverse steel pipe support 8 is connected with the top 7 of the I-shaped steel vertical supporting pile 2 in a welding mode through a reinforcing steel bar 3, and therefore a steel support anti-falling facility is formed.
(6) A plurality of horizontal inclined struts 11 are sequentially welded between two steel enclosing purlins at the corner position of each foundation pit from outside to inside at intervals, and then a plurality of longitudinal struts 12 are welded between every two adjacent horizontal inclined struts.
(7) And the joint of each horizontal diagonal brace and each longitudinal brace is respectively connected with the top 7 of the I-steel vertical supporting pile 2 in a welding way.
(8) And applying prestress on the longitudinal steel pipe supports 10, the transverse steel pipe supports 8 and the horizontal inclined supports to complete the support of the whole foundation pit stress system.
Claims (6)
1. The utility model provides a corner bracing construction structures, includes and digs the foundation ditch of establishing in setting for the position, is equipped with many steel sheet piles to the underground all around at the foundation ditch to form sheet pile wall, its characterized in that around the foundation ditch: a plurality of I-shaped steel vertical support piles are respectively fixed at preset positions in a foundation pit surrounded by a plurality of steel sheet piles, and the lower ends of the I-shaped steel vertical support piles are buried to a depth of 9 m; the steel sheet pile foundation structure is characterized in that a guide channel is excavated along the inner side ground of a steel sheet pile position, a plurality of triangular supports are welded on the bottom surface of the guide channel at intervals, a plurality of steel purlins are continuously fixed on the triangular supports and are welded with the steel sheet pile, the top elevations of the plurality of steel purlins are consistent with the elevation of the steel purlins marked on the steel sheet pile, the steel purlins are made of I-shaped steel, the upper flange plate and the lower flange plate of each steel purlin are horizontally arranged, and the top elevation of each steel purlin is 0.7-0.9 m below the ground; welding a plurality of stiffening plates between the upper and lower flange plates of the steel purlins at the intersection of the two steel purlins at each corner of the guide channel, and fixing an upper layer and a lower layer of haunched plates between the two steel purlins at each corner of the guide channel;
a plurality of longitudinal steel pipe supports are welded between the steel purlins on the front side and the rear side of the foundation pit at intervals from left to right, every two adjacent longitudinal steel pipe supports are respectively used as a group of longitudinal steel pipe supports, the two adjacent longitudinal steel pipe supports are arranged at intervals, a plurality of transverse steel pipe supports are welded between two longitudinal steel pipe supports of each group of longitudinal steel pipe supports at intervals in the front-back direction, the intersection of each longitudinal steel pipe support and each transverse steel pipe support is welded with the top of the I-shaped steel vertical supporting pile through a reinforcing steel bar, a plurality of horizontal inclined struts are welded between the two steel purlins at the corner position of each foundation pit at intervals from outside to inside in sequence, a plurality of longitudinal braces are welded between two adjacent horizontal diagonal braces, and the joint of each horizontal diagonal brace and the longitudinal brace is respectively welded with the top of the I-steel vertical support pile.
2. The diagonal bracing construction structure at a corner according to claim 1, wherein: and a stiffening triangular plate is welded at the end part of each horizontal diagonal brace, the stiffening triangular plate is triangular, and the side walls on two sides of the stiffening triangular plate are respectively connected with the steel surrounding purlin and the horizontal diagonal braces.
3. The diagonal bracing construction structure at a corner according to claim 2, wherein: and a second door-shaped stiffening plate is welded between the connecting part of each stiffening triangular plate and the steel purlin.
4. A corner diagonal bracing construction structure according to any one of claims 1 to 3, wherein: and a first door-shaped stiffening plate is welded between the joint of each longitudinal steel pipe support and the steel purlin.
5. The diagonal bracing construction structure at a corner according to claim 4, wherein: the depth of the guide channel is 1.5-1.6m below the ground, and the width of the guide channel is 3m-3.1 m.
6. The diagonal bracing construction structure at a corner according to claim 5, wherein: and the closed folding position of the sheet pile wall is selected at the corner of the short side of the foundation pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121871937.8U CN216275712U (en) | 2021-08-11 | 2021-08-11 | Corner bracing construction structures |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121871937.8U CN216275712U (en) | 2021-08-11 | 2021-08-11 | Corner bracing construction structures |
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| CN216275712U true CN216275712U (en) | 2022-04-12 |
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| CN202121871937.8U Active CN216275712U (en) | 2021-08-11 | 2021-08-11 | Corner bracing construction structures |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687355A (en) * | 2022-04-14 | 2022-07-01 | 北京京水建设集团有限公司 | Ship lock foundation pit excavation and supporting structure and construction method thereof |
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2021
- 2021-08-11 CN CN202121871937.8U patent/CN216275712U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687355A (en) * | 2022-04-14 | 2022-07-01 | 北京京水建设集团有限公司 | Ship lock foundation pit excavation and supporting structure and construction method thereof |
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