CN222314007U - Deep foundation pit assembled prestress combined horizontal steel support structure system - Google Patents
Deep foundation pit assembled prestress combined horizontal steel support structure system Download PDFInfo
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- CN222314007U CN222314007U CN202420023114.7U CN202420023114U CN222314007U CN 222314007 U CN222314007 U CN 222314007U CN 202420023114 U CN202420023114 U CN 202420023114U CN 222314007 U CN222314007 U CN 222314007U
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Abstract
本实用新型涉及一种深基坑装配式预应力组合水平钢支撑结构体系，其特征在于：包括角部支撑机构和主支撑机构，角部支撑机构与深基坑围檩呈45°角固定，角部支撑机构包括多根钢管水平主梁钢支撑、H型钢水平系梁钢支撑及H型钢立柱，H型钢立柱与钢管水平主梁钢支撑竖直固接；主支撑机构包括多根钢管水平主梁钢支撑、H型钢水平系梁钢支撑及H型钢立柱，多根钢管水平主梁钢支撑一端与深基坑通过Z型挂板和水平主梁钢支撑固定端与深基坑围檩固定，另一端通过Z型挂板和水平主梁钢支撑活络头与深基坑围檩固定，H型钢立柱与钢管水平主梁钢支撑竖直固接。优点是：实现深基坑钢支撑施工的装配化、标准化，简化安装及拆卸难度；拆装后的标准化构件可重复利用，大幅度降低施工成本。
The utility model relates to an assembled prestressed combined horizontal steel support structure system for a deep foundation pit, which is characterized in that: it comprises a corner support mechanism and a main support mechanism, the corner support mechanism is fixed to the deep foundation pit perimeter purlin at an angle of 45°, the corner support mechanism comprises a plurality of steel tube horizontal main beam steel supports, H-shaped steel horizontal tie beam steel supports and H-shaped steel columns, and the H-shaped steel columns are vertically fixedly connected to the steel tube horizontal main beam steel supports; the main support mechanism comprises a plurality of steel tube horizontal main beam steel supports, H-shaped steel horizontal tie beam steel supports and H-shaped steel columns, one end of the plurality of steel tube horizontal main beam steel supports is fixed to the deep foundation pit perimeter purlin through a Z-shaped hanging plate and a fixed end of the horizontal main beam steel supports, and the other end is fixed to the deep foundation pit perimeter purlin through a Z-shaped hanging plate and a movable head of the horizontal main beam steel support, and the H-shaped steel column is vertically fixedly connected to the steel tube horizontal main beam steel support. The advantages are: it realizes the assembly and standardization of deep foundation pit steel support construction, simplifies the difficulty of installation and disassembly; the standardized components after disassembly and assembly can be reused, greatly reducing the construction cost.
Description
Technical Field
The utility model belongs to the technical field of foundation pit support in the building industry, and particularly relates to a deep foundation pit assembled prestress combined horizontal steel support structure system.
Background
The foundation pit steel support system is a structural body which utilizes steel supports to form an internal support structure and fully utilizes the characteristics of the steel supports through various structures in horizontal, vertical or zigzag shapes. The steel support system consists of a horizontal support, a vertical support, a waist beam and the like. The building support structure mainly made of materials such as steel pipes, H-shaped steel, angle steel and the like is widely used for temporary support of various large-scale projects and frame support in construction. The steel support structure has the advantages of strong bearing capacity, good durability, convenient construction and the like, is an indispensable structure in modern building engineering, and has wide application, including house building, bridge construction, tunnel engineering, hydraulic engineering, subways, foundation pit enclosure and the like.
At present, a foundation pit steel support system mainly comprises the following structures:
1. The H-shaped steel is used as a stressed beam, and comprises standard component combinations such as an angle support, a cross beam, an upright post, a pull rod, an angle joint, a pre-pressing jacking device and the like, and is mainly connected by high-strength bolts, and is subjected to pre-stress to form a planar pre-stress support system and a three-dimensional structure system. The structural steel combined support has the defects that as the main stress structure of the structural steel combined support adopts H-shaped steel, the horizontal support girder is connected with the girder, the girder is connected with the structural steel tie beam, the girder is connected with the steel upright post through high-strength bolts and the like, and the standardized component combination is adopted, the structural stress belongs to the H-shaped steel combined body, the material selection is single, and for a complicated foundation pit or a large foundation pit, the sectional dimension of the H-shaped steel is large, and the nodes are complex, so that the installation and disassembly difficulty is increased.
2. The steel pipe and the steel pipe are combined to support, the main beam and the tie beam are of steel pipe structures, the upright post is of steel, the main beam and the upright post are connected through bracket, and the tie beam and the main beam are connected in a welding mode to form a frame supporting system. The welding flange is adopted at the connecting part of the main beam and the tie beam, or the tie beam is connected through a high-strength bolt, or the tie beam is directly welded with the main beam, so that the welding quality requirement of the node is high, the difficulties of construction, component installation and disassembly are increased, and the standardized component cannot be reused after the component is disassembled.
Disclosure of Invention
The utility model provides a deep foundation pit assembled prestress combined horizontal steel support structure system which can meet different foundation pit forms, realize the combination of different steel members and accessories, form a stress system of a plurality of steel member assembled combined steel support structures and greatly improve construction operability and safety.
The utility model adopts the technical proposal for solving the technical problems in the prior art that:
The deep foundation pit assembled prestress combined horizontal steel support structure system is characterized by comprising corner support mechanisms positioned at four corners of a deep foundation pit and a main support mechanism positioned at the center of the deep foundation pit;
The angle supporting mechanism is fixed at an angle of 45 degrees with the deep foundation pit enclosing purlin, the angle supporting mechanism comprises a plurality of steel pipe horizontal main beam steel supports which are arranged in parallel, H-shaped steel horizontal beam steel supports or steel pipe horizontal beam steel supports which are fixedly connected among the plurality of steel pipe horizontal main beam steel supports, and H-shaped steel upright posts, one ends of the plurality of steel pipe horizontal main beam steel supports are fixed with the deep foundation pit enclosing purlin bracket through a detachable Z-shaped hanging plate and a fixed end of the horizontal main beam steel support, and the other ends of the plurality of steel pipe horizontal main beam steel supports are fixed with the deep foundation pit enclosing purlin bracket through a detachable Z-shaped hanging plate and a movable head of the horizontal main beam steel support, and the H-shaped steel upright posts are vertically fixedly connected with the steel pipe horizontal main beam steel supports;
The main support mechanism positioned at the center of the deep foundation pit comprises a plurality of steel pipe horizontal main beam steel supports positioned in the deep foundation pit and arranged in parallel, and H-shaped steel horizontal beam steel supports or steel pipe horizontal beam steel supports and H-shaped steel columns fixed between the plurality of steel pipe horizontal main beam steel supports, wherein one ends of the plurality of steel pipe horizontal beam steel supports are fixed with the purlin of the deep foundation pit through a detachable Z-shaped hanging plate and a fixed end of the horizontal beam steel support, and the other ends of the plurality of steel pipe horizontal beam steel supports are fixed with the purlin of the deep foundation pit through a detachable Z-shaped hanging plate and a movable head of the horizontal main beam steel support, and the H-shaped steel columns are vertically fixedly connected with the steel pipe horizontal beam steel supports.
The utility model can also adopt the following technical scheme:
Preferably, the steel pipe horizontal main girder steel support of the main supporting mechanism and the steel pipe horizontal main girder steel support of the corner supporting mechanism are formed by connecting steel pipes with flanges at the ends.
Preferably, the H-shaped steel upright post of the main support mechanism and the steel pipe horizontal main beam steel support are fixed through an H-shaped steel upright post connecting unit.
Preferably, the steel pipe horizontal main beam steel support and the H-shaped steel horizontal beam steel support of the corner support mechanism are mutually connected and fixed through H-shaped steel beam conversion hoops, and the plurality of steel pipe horizontal main beam steel supports and the steel pipe horizontal beam steel support which are mutually arranged in parallel of the main support mechanism are mutually connected and fixed through the steel pipe beam conversion hoops.
The H-shaped steel tie beam conversion anchor ear and the steel pipe tie beam conversion anchor ear comprise square end plates, two semicircular plates, stiffening plates and high-strength bolts, wherein the square end plates are connected with rectangular end plates of the H-shaped steel horizontal tie beam steel support through the high-strength bolts, the two semicircular plates are round and encircle the steel pipe horizontal main beam steel support through the high-strength bolts, the stiffening plates are welded with the square end plates and the semicircular plates, the two semicircular plates are in butt joint with each other to form a complete stress node, the square end plates are fixedly connected with the steel pipe horizontal tie beam steel support through the high-strength bolts, the two semicircular plates are in butt joint with each other to form round and encircle the steel pipe horizontal tie beam steel support, and the steel pipe tie beam conversion anchor ear is fixed with the two semicircular plates through the high-strength bolts.
The utility model has the advantages and positive effects that as the technical scheme is adopted, the utility model adopts the Z-shaped hanging plate, the fixed end of the steel pipe horizontal main beam steel supporting pipe, the movable head, the H-shaped steel upright post, the steel pipe horizontal main beam steel support assembled by a plurality of steel pipes and flanges, the H-shaped steel horizontal beam steel support, the steel pipe horizontal beam steel support, the H-shaped steel beam conversion anchor ear, the steel pipe beam conversion anchor ear and other different standard component assembly combinations are connected and fixed with the bracket of the foundation pit enclosing purlin, and a steel support structure stress system of the deep foundation pit is formed.
The assembly and standardization of the construction of the steel support of the deep foundation pit can be realized, the installation and disassembly difficulties of the steel support of the deep foundation pit are simplified, the combination of different steel members and accessories can be realized, and a stress system of a plurality of steel member assembly type combined steel support structures is formed, so that the form of the steel support structure system is improved by a new height. In addition, each standardized component after being disassembled and assembled can be reused, and the construction cost of the steel support of the deep foundation pit is greatly reduced.
Drawings
FIG. 1 is a top view of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a diagram showing the connection structure of the steel pipe horizontal girder steel support and the steel pipe horizontal tie beam steel support;
FIG. 4 is a view in the A direction of FIG. 3;
FIG. 5 is a diagram showing the connection structure of the steel pipe horizontal girder steel support and the H-shaped steel horizontal tie beam steel support;
FIG. 6 is a view in the B direction of FIG. 5;
FIG. 7 is a diagram showing the connection structure of the steel pipe horizontal girder steel support, the Z-shaped hanging plate, the loose head, the fixed end and the foundation pit enclosing purlin;
FIG. 8 is an assembly view of the steel support of the steel pipe horizontal main beam and H-beam column connection unit of the present utility model;
FIG. 9 is a B-B cross-sectional view of FIG. 8;
FIG. 10 is a block diagram of a Z-shaped hanger plate of the present utility model;
FIG. 11 is a right side view of FIG. 10;
FIG. 12 is a block diagram of a articulating head of the utility model;
FIG. 13 is a C-C cross-sectional view of FIG. 12;
fig. 14 is a view in the C-direction of fig. 12.
In the figure, 1, an H-shaped steel upright column, 2, an H-shaped steel upright column connecting unit, 2-1, an angle support, 2-2, an angle support connecting piece, 3, a steel pipe horizontal girder steel support, 4, an H-shaped steel horizontal girder steel support, 5, a steel pipe horizontal girder steel support, 6, an H-shaped steel girder conversion anchor ear, 7, a steel pipe girder conversion anchor ear, 7-1, a square end plate, 7-2, a semicircular plate, 7-3, a stiffening plate, 7-4, a high-strength bolt, 8, a Z-shaped hanging plate, 9, a movable head, 10, a deep foundation pit enclosing purlin bracket, 11, a fixed end, 12, a flange plate, 13 and a deep foundation pit enclosing purlin.
Detailed Description
The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to figures 1-14 of the drawings,
A deep foundation pit assembly type prestress combined horizontal steel support structure system comprises corner support mechanisms positioned at four corners of a deep foundation pit and a main support mechanism positioned at the center of the deep foundation pit;
The main support mechanism positioned at the center of the deep foundation pit comprises a plurality of steel pipe horizontal main beam steel supports 3 which are arranged in parallel with each other and positioned in the deep foundation pit, an H-shaped steel horizontal beam steel support 4 or a steel pipe horizontal beam steel support 5 which are fixed between the plurality of steel pipe horizontal main beam steel supports, and an H-shaped steel upright column 1, wherein one ends of the plurality of steel pipe horizontal beam steel supports are fixed with a surrounding purlin 13 (or surrounding purlin bracket) of the deep foundation pit through a detachable Z-shaped hanging plate 8 and a fixed end 11 of the horizontal main beam steel support. The other end is fixed with the purlin (or purlin bracket) of the deep foundation pit through a detachable Z-shaped hanging plate 8 and a detachable head 9. The Z-shaped hanging plate 8 is directly installed on a deep foundation pit enclosing purlin 13, and an expansion bolt or a high-strength bolt is fixed on the foundation pit enclosing purlin through a reserved hole at the top of the Z-shaped hanging plate. After the steel pipe horizontal main beam steel support 3 and the steel pipe horizontal tie beam steel support 5 are assembled to form a horizontal support, the H-shaped steel upright post 1 and the steel pipe horizontal main beam steel support 3 are vertically fixedly connected, and the H-shaped steel upright post 1 and the steel pipe horizontal main beam steel support 3 of the main support mechanism are fixed through the H-shaped steel upright post connecting unit 2, so that a bearing effect can be formed on the steel pipe horizontal main beam steel support 3. The H-shaped steel upright column connecting unit 2 comprises an angle support 2-1 and an angle support connecting piece 2-2, wherein the angle support is formed by combining angle steel with the diameter of 100 multiplied by 10mm into a triangular support, the angle support connecting piece is made of angle steel, the angle support is welded on the H-shaped steel upright column according to the height and the angle of the horizontal support of the steel pipe main beam, and then the angle support connecting piece is welded with the angle support, so that the angle support connecting piece is sealed around the steel pipe horizontal main beam steel support 3, and the horizontal displacement of the steel pipe horizontal main beam steel support 3 is limited after being stressed.
The steel pipe horizontal main beam steel support 3 of the main support mechanism is formed by connecting steel pipes with flange plates 12 at the ends, one end of the steel pipe horizontal main beam steel support 3 is fixed with a deep foundation pit enclosing purlin 13 (or an enclosing purlin bracket) through a detachable Z-shaped hanging plate 8 and a fixed end 11 of the horizontal main beam steel support, and high-strength bolts are used for fastening. The other end is connected with the movable head 9 through a flange plate 12, after high-strength bolts are adopted for fastening, hydraulic jacks (oil tops) are respectively arranged on two sides of the movable head, prestress is applied to the steel pipe horizontal main beam steel support 3 in a grading manner according to design requirements, the design value is reached, and after pressure stabilization, special stopper iron is adopted for stopper tightening to prevent prestress rebound.
And a plurality of steel pipe horizontal main beam steel supports 3 and steel pipe horizontal tie beam steel supports 5 of the main support mechanism which are arranged in parallel are mutually connected and fixed through steel pipe tie beam conversion anchor ear 7. In addition, in order to fully utilize construction materials of a construction site, the H-shaped steel horizontal tie beam steel supports 4 and the H-shaped steel tie beam conversion anchor ear 6 can be connected and fixed between the plurality of steel pipe horizontal main beam steel supports 3 which are arranged in parallel with each other of the main support mechanism.
The steel tube beam conversion anchor ear 7 and the H-shaped steel beam conversion anchor ear 6 are both composed of the same components.
The H-shaped steel beam conversion anchor ear 6 comprises a square end plate 7-1, two semicircular plates 7-2, a stiffening plate 7-3 and a high-strength bolt 7-4, wherein the square end plate is connected with a rectangular end plate supported by H-shaped steel horizontal beam steel through the high-strength bolt, the H-shaped steel beam conversion anchor ear is mutually butted by adopting the two semicircular plates to form a complete stress node, the two semicircular plates are circular and encircle the steel pipe horizontal main beam steel support 3, the anchor ear is fastened firmly through the M24 high-strength bolt 7-4, and the stiffening plate is welded with the square end plate and the semicircular plates to play a reinforcing role in the whole anchor ear.
H-shaped steel horizontal tie beam steel support 4 and H-shaped steel horizontal tie beam steel support are connected through H-shaped steel tie beam conversion anchor ear 6 or steel pipe tie beam conversion anchor ear 7The steel pipe horizontal main beam steel supports 3 are connected into a whole, so that the connection between different types of materials forms a conversion node between the different types of materials, and the steel pipe horizontal main beam steel supports are combined to form an integral stress system of the deep foundation pit assembled prestress combined horizontal steel support structure system.
The angle part supporting mechanism is fixed at an angle of 45 degrees with a deep foundation pit enclosing purlin bracket 10, the angle part supporting mechanism comprises a plurality of steel pipe horizontal main beam steel supports 3 which are arranged in parallel, H-shaped steel horizontal beam steel supports 4 or steel pipe horizontal beam steel supports 5 and H-shaped steel upright posts 1 which are fixedly connected between the plurality of steel pipe horizontal main beam steel supports, one ends of the plurality of steel pipe horizontal main beam steel supports are fixed with the deep foundation pit enclosing purlin bracket 10 through a detachable Z-shaped hanging plate 8 and a fixed end 11 of the horizontal main beam steel support, the other ends of the plurality of steel pipe horizontal main beam steel supports are fixed with the deep foundation pit enclosing purlin bracket through a detachable Z-shaped hanging plate and a detachable movable head 9, and the H-shaped steel upright posts 1 are vertically fixedly connected with the steel pipe horizontal main beam steel supports 3. The steel pipe horizontal main beam steel supports 3 of the corner supporting mechanism are formed by connecting steel pipes with flanges at the ends.
The Z-shaped hanging plate 8 is directly arranged on the purlin bracket 10 of the deep foundation pit, and an expansion bolt or a high-strength bolt is fixed on the purlin bracket of the deep foundation pit through a reserved hole at the top of the Z-shaped hanging plate. After the steel pipe horizontal main beam steel support 3 and the H-shaped steel horizontal beam steel support 4 are assembled to form a horizontal support, the H-shaped steel upright post 1 and the steel pipe horizontal main beam steel support 3 are vertically fixedly connected, and the H-shaped steel upright post 1 and the steel pipe horizontal main beam steel support 3 of the corner support mechanism are fixed through the H-shaped steel upright post connecting unit 2, so that a bearing effect can be formed on the steel pipe horizontal main beam steel support 3. The H-shaped steel upright column connecting unit 2 comprises an angle support 2-1 and an angle support connecting piece 2-2, wherein the angle support is formed by combining angle steel with the diameter of 100 multiplied by 10mm into a triangular support, the angle support connecting piece is made of angle steel, the angle support is welded on the H-shaped steel upright column according to the height and the angle of the horizontal support of the steel pipe main beam, and then the angle support connecting piece is welded with the angle support, so that the angle support connecting piece is sealed around the steel pipe horizontal main beam steel support 3, and the horizontal displacement of the steel pipe horizontal main beam steel support 3 is limited after being stressed.
The steel pipe horizontal main beam steel support 3 of the corner support mechanism is formed by connecting steel pipes with flange plates 12 at the ends, one end of the steel pipe horizontal main beam steel support 3 is fixed with a deep foundation pit enclosing purlin bracket 10 through a detachable Z-shaped hanging plate and a horizontal main beam steel support fixed end, the other end of the steel pipe horizontal main beam steel support is fixed with the deep foundation pit enclosing purlin bracket through a detachable Z-shaped hanging plate 8 and a detachable head 9, after high-strength bolts are adopted for fastening, hydraulic jacks (oil tops) are respectively placed on two sides of the detachable head, prestress is applied to the steel pipe horizontal main beam steel support 3 in a grading mode according to design requirements, the design value is reached, and after the prestress rebound is prevented by adopting special stopper plugs.
The steel tube horizontal main beam steel supports 3 and the H-shaped steel horizontal beam steel supports 4 of the corner supporting mechanism which are arranged in parallel are connected and fixed with each other through the H-shaped steel beam conversion anchor ear 6. In addition, in order to fully utilize construction materials of a construction site, a plurality of steel pipe horizontal main beam steel supports 3 which are arranged in parallel with each other of the corner support mechanism can be fixedly connected with each other by adopting a steel pipe horizontal tie beam steel support 5 through a steel pipe tie beam conversion anchor ear 7.
The embodiments described in the drawings of the present utility model are exemplary only, and are not to be construed as limiting the utility model.
Claims (5)
1. The deep foundation pit assembled prestress combined horizontal steel support structure system is characterized by comprising corner support mechanisms positioned at four corners of a deep foundation pit and a main support mechanism positioned at the center of the deep foundation pit;
The angle supporting mechanism is fixed at an angle of 45 degrees with the deep foundation pit enclosing purlin, the angle supporting mechanism comprises a plurality of steel pipe horizontal main beam steel supports which are arranged in parallel, H-shaped steel horizontal beam steel supports or steel pipe horizontal beam steel supports which are fixedly connected among the plurality of steel pipe horizontal main beam steel supports, and H-shaped steel upright posts, one ends of the plurality of steel pipe horizontal main beam steel supports are fixed with the deep foundation pit enclosing purlin bracket through a detachable Z-shaped hanging plate and a fixed end of the horizontal main beam steel support, and the other ends of the plurality of steel pipe horizontal main beam steel supports are fixed with the deep foundation pit enclosing purlin bracket through a detachable Z-shaped hanging plate and a movable head of the horizontal main beam steel support, and the H-shaped steel upright posts are vertically fixedly connected with the steel pipe horizontal main beam steel supports;
The main support mechanism positioned at the center of the deep foundation pit comprises a plurality of steel pipe horizontal main beam steel supports positioned in the deep foundation pit and arranged in parallel, and H-shaped steel horizontal beam steel supports or steel pipe horizontal beam steel supports and H-shaped steel columns fixed between the plurality of steel pipe horizontal main beam steel supports, wherein one ends of the plurality of steel pipe horizontal beam steel supports are fixed with the purlin of the deep foundation pit through a detachable Z-shaped hanging plate and a fixed end of the horizontal beam steel support, and the other ends of the plurality of steel pipe horizontal beam steel supports are fixed with the purlin of the deep foundation pit through a detachable Z-shaped hanging plate and a movable head of the horizontal main beam steel support, and the H-shaped steel columns are vertically fixedly connected with the steel pipe horizontal beam steel supports.
2. The deep foundation pit assembled prestress combined horizontal steel support structure system of claim 1, wherein the steel pipe horizontal main girder steel support of the main support mechanism and the steel pipe horizontal main girder steel support of the corner support mechanism are formed by connecting steel pipes with flanges at the ends.
3. The deep foundation pit assembled prestress combined horizontal steel support structure system of claim 1, wherein an H-shaped steel column of the main support mechanism and a steel pipe horizontal main beam steel support are fixed through an H-shaped steel column connecting unit.
4. The deep foundation pit assembled prestress combined horizontal steel support structure system of claim 1, wherein the steel pipe horizontal main beam steel support and the H-shaped steel horizontal beam steel support of the corner support mechanism are connected and fixed through H-shaped steel beam conversion hoops, and the plurality of steel pipe horizontal main beam steel supports and the steel pipe horizontal beam steel support which are arranged in parallel are connected and fixed through the steel pipe beam conversion hoops.
5. The deep foundation pit assembled prestress combined horizontal steel support structure system is characterized in that the H-shaped steel tie beam conversion anchor ear and the steel pipe tie beam conversion anchor ear comprise square end plates, two semicircular plates, stiffening plates and high-strength bolts, the square end plates are connected with rectangular end plates of the H-shaped steel horizontal tie beam steel support through the high-strength bolts, the two semicircular plates form a circle and encircle the steel pipe horizontal main beam steel support, the anchor ear is fastened through the high-strength bolts, the stiffening plates are welded with the square end plates and the semicircular plates, the two semicircular plates are mutually butted to form a complete stress node, the square end plates are fixedly connected with the steel pipe horizontal tie beam steel support through the high-strength bolts, the two semicircular plates are mutually butted to form a circle and the steel pipe horizontal tie beam steel support, and the steel pipe tie beam conversion anchor ear is fixed with the two semicircular plates through the high-strength bolts.
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| CN202420023114.7U CN222314007U (en) | 2024-01-04 | 2024-01-04 | Deep foundation pit assembled prestress combined horizontal steel support structure system |
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| CN202420023114.7U CN222314007U (en) | 2024-01-04 | 2024-01-04 | Deep foundation pit assembled prestress combined horizontal steel support structure system |
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