CN212026270U - Foundation ditch assembled H shaped steel braced system - Google Patents
Foundation ditch assembled H shaped steel braced system Download PDFInfo
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- CN212026270U CN212026270U CN202020150890.5U CN202020150890U CN212026270U CN 212026270 U CN212026270 U CN 212026270U CN 202020150890 U CN202020150890 U CN 202020150890U CN 212026270 U CN212026270 U CN 212026270U
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Abstract
The utility model discloses a foundation pit assembled H-shaped steel supporting system, which comprises horizontal counter stays formed by connecting H-shaped steel, the H-shaped steel forming the horizontal counter stays is connected through plate-type nodes, an end plate type node is respectively arranged at the middle position of the two end parts of the horizontal opposite support, a plurality of evenly distributed side plate type nodes are respectively arranged on the two side edges of the horizontal opposite support, an upper steel stay is arranged above the horizontal counter support, two ends of the upper steel stay are respectively connected with the upper cover plates of the two end plate type nodes, a lower steel stay is arranged below the horizontal counter support, two ends of the lower steel stay are respectively connected with the lower cover plates of the two end plate type nodes, the upper steel stay and the lower steel stay are provided with a plurality of uniformly distributed support vertical surfaces, two upper inclined supporting rods which are arranged in a bilateral symmetry mode and two lower inclined supporting rods which are arranged in a bilateral symmetry mode are arranged in each supporting vertical surface. The utility model discloses a space structure design theory has guaranteed the stability of structure, and economic nature is good, construction convenience.
Description
Technical Field
The utility model belongs to the technical field of building structure engineering, especially, relate to deep basal pit supporting technology.
Background
Since the 21 st century, high-rise buildings in China are gradually increased, overground resources are increasingly tense, reasonable application of underground space is more and more emphasized by people, design theory and construction technology of foundation pit engineering are gradually developed and promoted, and standard regulations of various foundation pit engineering are continuously updated.
The supporting type structure is common in the current foundation pit engineering, and can be divided into a reinforced concrete support, a steel support and a combined support according to materials. With the vigorous advocation of China on fabricated structures in recent years, more foundation pit steel support systems can be applied to practical engineering, and compared with reinforced concrete support systems, the foundation pit steel support system has the advantages of being clear in stress, simple in structure, fast in construction and installation, capable of being recycled and the like.
At present, the rigidity and the stability of the traditional H-shaped steel supporting system in China are not ideal, the time cost and the economic cost can be increased by increasing the steel consumption and the vertical rods for solving the problems, the excavation of a foundation pit soil body can be influenced by the arrangement of the vertical rods, the construction period is further prolonged, and meanwhile, the new defect that the stability of the whole structure is influenced by the uplift can be brought. In conclusion, the development of a novel assembly type H-shaped foundation pit steel supporting system has important theoretical and engineering significance.
Disclosure of Invention
The utility model discloses a solve the technical problem who exists among the well-known technology and provide a foundation ditch assembled H shaped steel support system, this support system's stability is good, economic nature is good, construction convenience.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a foundation pit assembly type H-shaped steel supporting system comprises a horizontal butt brace formed by connecting H-shaped steel, the H-shaped steel forming the horizontal butt brace is connected through plate-type nodes, each plate-type node is provided with an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are connected together through bolts and corresponding H-shaped steel, a end plate-type node is arranged at the middle position of each of two end parts of the horizontal butt brace, a plurality of uniformly distributed side plate-type nodes are arranged on two lateral sides of the horizontal butt brace, an upper steel cable is arranged above the horizontal butt brace, two ends of the upper steel cable are respectively connected with the upper cover plates of the two end plate-type nodes, a lower steel cable is arranged below the horizontal butt brace, two ends of the lower steel cable are respectively connected with the lower cover plates of the two end plate-type nodes, and the upper steel cable and the lower steel cable are provided with a plurality of uniformly distributed supporting vertical surfaces, two upper inclined support rods and two lower inclined support rods are arranged in each supporting vertical surface, the upper ends of the upper inclined support rods are connected with the upper steel inhaul cable, the lower ends of the upper inclined support rods are connected with the upper cover plate of the side plate type nodes, the lower ends of the lower inclined support rods are connected with the lower steel inhaul cable, and the upper ends of the lower inclined support rods are connected with the lower cover plate of the side plate type nodes.
On the basis of the above scheme, the utility model discloses following improvement has still been made:
the upper end of the upper inclined stay bar is connected with the upper steel cable through an upper cable clamp, the upper cable clamp is fixed on the upper steel cable, the lower end of the lower inclined stay bar is connected with the lower steel cable through a lower cable clamp, and the lower cable clamp is fixed on the lower steel cable.
Connecting lug plates are arranged on the upper cover plate and the lower cover plate of the end plate type node and the side plate type node and on the upper cable clamp and the lower cable clamp, fork lug joints are arranged at two ends of the upper steel cable, the lower steel cable, the upper inclined stay bar and the lower inclined stay bar, and the corresponding fork lug joints are connected with the connecting lug plates through pin shafts.
The upper inclined supporting rod and the lower inclined supporting rod are both made of round steel tubes.
The utility model has the advantages and positive effects that: on current foundation ditch H shaped steel bearing structure's basis, in using the foundation ditch steel support scheme design with spatial structure design theory, be a novel assembled foundation ditch H shaped steel support system, utilize steel cable and vaulting pole to replace the stand to provide vertical braces for the level to propping, in order to reduce the inner space who occupies the foundation ditch, for the inside soil body excavation of foundation ditch creates the advantage, and then improve the efficiency of construction, shorten construction period, also avoided simultaneously because of adopting the stand to prop for the level and provide vertical support and cause the not enough of uplift. To sum up, the utility model discloses utilize steel and spatial structure design theory, guaranteed the stability of structure, reduced the setting of foundation ditch stand, increased the working space of foundation ditch excavation, construction convenience can effectively reduce engineering time cost and economic cost. Can be suitable for supporting of deep foundation pits.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a plate type node structure of the present invention;
FIG. 4 is a schematic structural view of the upper end of the upper diagonal brace and the upper steel cable connected by the upper cable clamp;
FIG. 5 is a schematic view of the connection structure between one end of the upper steel cable and an upper cover plate of an end plate type joint of the present invention;
fig. 6 is a schematic view of the connection structure between the lower end of the upper diagonal brace and the upper cover plate of the lateral plate type node of the present invention.
In the figure: 1. horizontally supporting; 1-1, bolts; 1-2, end plate type nodes; 1-3, side plate type nodes; 2. an upper steel cable; 3. a lower steel cable; 4. an upper diagonal brace; 5. a lower diagonal brace; 6. an upper cable clamp; 7. connecting the ear plates; 8. a fork lug joint; 9. a pin shaft; 10. and (7) enclosing purlins.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:
referring to fig. 1 to 6, the assembled H-shaped steel supporting system for the foundation pit comprises horizontal opposite supports 1 formed by connecting H-shaped steel, wherein the H-shaped steel forming the horizontal opposite supports 1 is connected through plate-type joints, each plate-type joint is provided with an upper cover plate and a lower cover plate, and the upper cover plate and the lower cover plate are connected with corresponding H-shaped steel through bolts 1-1.
And an end plate type node 1-2 is respectively arranged at the middle position of the two end parts of the horizontal opposite support 1.
A plurality of side plate type nodes 1-3 which are uniformly arranged are respectively arranged on two sides of the horizontal diagonal bracing 1.
An upper steel stay rope 2 is arranged above the horizontal counter stay 1, and two ends of the upper steel stay rope 2 are respectively connected with the upper cover plates of the two end plate type nodes 1-2.
A lower steel stay cable 3 is arranged below the horizontal counter stay 1, and two ends of the lower steel stay cable 3 are respectively connected with the lower cover plates of the two end plate type nodes 1-2.
The upper steel cable 2 and the lower steel cable 3 are provided with a plurality of uniformly arranged supporting vertical surfaces, and each supporting vertical surface is internally provided with two upper inclined supporting rods 4 and two lower inclined supporting rods 5 which are symmetrically arranged from side to side.
The upper end of the upper inclined stay bar 4 is connected with the upper steel stay rope 2, and the lower end of the upper inclined stay bar 4 is connected with the upper cover plate of the side plate type node 1-3.
The lower end of the lower inclined stay bar 5 is connected with the lower steel stay cable 3, and the upper end of the lower inclined stay bar 5 is connected with the lower cover plate of the side plate type node 1-3.
In this embodiment, the upper end of the upper diagonal stay 4 is connected to the upper steel cable 2 by an upper cable clamp 6, the upper cable clamp 6 is fixed to the upper steel cable 2, and similarly, the lower end of the lower diagonal stay 5 is connected to the lower steel cable 3 by a lower cable clamp, and the lower cable clamp is fixed to the lower steel cable 3. Each steel inhaul cable is provided with a plurality of cable clamps so as to form reliable support for the steel inhaul cable and avoid displacement of a support point.
In this embodiment, connecting ear plates 7 are respectively disposed on the upper and lower cover plates of the end plate type nodes 1-2 and the side plate type nodes 1-3 and on the upper cable clamp 6 and the lower cable clamp, fork ear joints 8 are respectively disposed at two ends of the upper steel cable 2, the lower steel cable 3, the upper inclined strut 4 and the lower inclined strut 5, and the corresponding fork ear joints 8 and the connecting ear plates 7 are connected by a pin 9. The upper diagonal brace 4 and the lower diagonal brace 5 are both made of round steel tubes.
The utility model discloses a spatial structure's design theory adopts steel cable and diagonal brace thereof to replace vertical pole setting to provide vertical supporting effect for the level to propping. The horizontal bracing members are made of H-shaped steel, so that connection of each node is convenient and quick, each piece of H-shaped steel is connected to the cover plate to form plate-type nodes in the node in a bolt connection mode, and the outer surface of the cover plate is welded with the connecting lug plate, so that the horizontal bracing members are connected with other members. The two ends of the steel cable are connected with the connecting lug plates at the nodes of the end parts through fork lug connectors in a pin shaft mode, a plurality of cable clamps are arranged on the steel cable, and the connecting lug plates are welded on the cable clamps and are used for being connected with the inclined stay bars. The inclined strut selects a round steel tube, the two ends of the round steel tube are provided with the fork lug joints, the two ends of the inclined strut are connected with the connecting lug plate on the cable clamp and the connecting lug plate at the corresponding side node respectively in a pin shaft connection mode, the effect of the horizontal support is effectively transmitted, sufficient vertical support is provided for the horizontal support, the integral stability and rigidity are enhanced, and a symmetrical and reliable structure is formed.
The construction sequence is as follows: excavation of a foundation pit, supporting and enclosing purlin installation of the foundation pit, horizontal opposite bracing in-place installation, steel cable installation, diagonal brace connection, steel cable tensioning and cable clamp fixation.
The specific procedures are as follows: after the supporting structure plays a role and the foundation pit is excavated to a set depth, installing an enclosing purlin (waist rail) 10, after the enclosing purlin 10 is fixed, symmetrically assembling horizontal counter stays 1 from two ends to the middle, and then installing upper steel inhaul cables 2, pre-tightening and connecting the stay rods and cable clamps; and then the lower steel cable 2 is installed by adopting the same construction method. And if a plurality of supports are required to be arranged at a deeper foundation pit, continuously excavating downwards after the first support structure is completed, and repeating the construction mode to complete the construction of the plurality of steel supports.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.
Claims (4)
1. A foundation pit assembled H-shaped steel supporting system comprises a horizontal butt brace formed by connecting H-shaped steel, the H-shaped steel forming the horizontal butt brace is connected through a plate-type node, the plate-type node is provided with an upper cover plate and a lower cover plate, the upper cover plate and the lower cover plate are connected with corresponding H-shaped steel through bolts, and the foundation pit assembled H-shaped steel supporting system is characterized in that,
an end plate type node is respectively arranged at the middle position of the two end parts of the horizontal opposite support,
a plurality of evenly distributed side plate type nodes are respectively arranged on two sides of the horizontal opposite support,
an upper steel stay is arranged above the horizontal counter support, two ends of the upper steel stay are respectively connected with the upper cover plates of the two end plate type nodes,
a lower steel stay is arranged below the horizontal counter support, two ends of the lower steel stay are respectively connected with the lower cover plates of the two end plate type nodes,
the upper steel cable and the lower steel cable are provided with a plurality of supporting vertical surfaces which are uniformly arranged, each supporting vertical surface is internally provided with two upper inclined supporting rods which are symmetrically arranged from side to side and two lower inclined supporting rods which are symmetrically arranged from side to side,
the upper end of the upper inclined stay bar is connected with the upper steel stay cable, the lower end of the upper inclined stay bar is connected with the upper cover plate of the side plate type node,
the lower end of the lower inclined stay bar is connected with the lower steel stay cable, and the upper end of the lower inclined stay bar is connected with the lower cover plate of the side plate type node.
2. The foundation pit assembled H-shaped steel supporting system of claim 1, wherein the upper end of the upper inclined supporting rod is connected with the upper steel stay through an upper cable clamp, the upper cable clamp is fixed on the upper steel stay,
the lower end of the lower inclined stay bar is connected with the lower steel stay cable through a lower cable clamp, and the lower cable clamp is fixed on the lower steel stay cable.
3. The foundation pit assembled H-shaped steel supporting system according to claim 2, wherein connecting lug plates are arranged on the upper cover plate and the lower cover plate of the end plate type node and the side plate type node and on the upper cable clamp and the lower cable clamp, fork lug joints are arranged at two ends of the upper steel cable, the lower steel cable, the upper inclined supporting rod and the lower inclined supporting rod, and the corresponding fork lug joints and the connecting lug plates are connected through pin shafts.
4. The foundation pit assembled H-section steel support system of claim 1, wherein the upper and lower sway bars are each made of round steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020150890.5U CN212026270U (en) | 2020-02-03 | 2020-02-03 | Foundation ditch assembled H shaped steel braced system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020150890.5U CN212026270U (en) | 2020-02-03 | 2020-02-03 | Foundation ditch assembled H shaped steel braced system |
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| CN212026270U true CN212026270U (en) | 2020-11-27 |
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| CN202020150890.5U Expired - Fee Related CN212026270U (en) | 2020-02-03 | 2020-02-03 | Foundation ditch assembled H shaped steel braced system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921982A (en) * | 2021-01-29 | 2021-06-08 | 江苏三力岩土科技有限公司 | Independent large-span deep foundation pit prestressed steel supporting system |
-
2020
- 2020-02-03 CN CN202020150890.5U patent/CN212026270U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921982A (en) * | 2021-01-29 | 2021-06-08 | 江苏三力岩土科技有限公司 | Independent large-span deep foundation pit prestressed steel supporting system |
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Granted publication date: 20201127 Termination date: 20220203 |
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