CN212077961U - Lattice type section steel combined supporting system - Google Patents
Lattice type section steel combined supporting system Download PDFInfo
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- CN212077961U CN212077961U CN202020533471.XU CN202020533471U CN212077961U CN 212077961 U CN212077961 U CN 212077961U CN 202020533471 U CN202020533471 U CN 202020533471U CN 212077961 U CN212077961 U CN 212077961U
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Abstract
The utility model relates to a lattice formula shaped steel combination braced system, mainly used foundation ditch engineering's horizontal strut, include: the device comprises a wall , a support rod, a connecting member, a prestress loading device, a servo control device, a joist and an upright post. Enclosure is placed at the end or inside of a support pile/wall, support bars are propped against enclosure , and the support pile/wall is balanced by the support bars after the soil pressure is transferred to enclosure . The support rod is provided with a prestress loading device, and the prestress loading device is controlled by the servo control device to adjust the support shaft force. The joist is arranged below the support rod member, and the gravity and the upper construction load of the support rod member are balanced through the upright post, so that the stability of the support rod member is improved. The components of the system are connected through bolts, the components are assembled and installed on site, the construction efficiency is high, after the service cycle of the horizontal supporting structure of the foundation pit is finished, the components are dismantled and maintained and then used for the next project, green construction is achieved, and the construction cost is effectively reduced.
Description
Technical Field
The utility model relates to a lattice formula shaped steel combination braced system, especially an assembled horizontal supporting structure for foundation ditch engineering.
Background
With the arrival of the era of the development and the utilization of underground space, foundation pit engineering develops towards a large depth and a large area, and is used as temporary engineering, and once the construction of an underground structure is completed, the mission of the foundation pit is ended. The horizontal supporting system of the foundation pit comprises an anchor rod system and an inner supporting system. The anchor rod system is generally anchored outside the foundation pit, and the development of adjacent land blocks can be influenced. The inner support system is generally distributed inside a foundation pit in a beam form, and is erected or dismantled along with the construction progress of earth excavation and underground structures. The inner support can be divided into a reinforced concrete support and a steel support according to materials.
Wherein, the reinforced concrete support has the following problems: (1) the reinforced concrete support construction comprises more complicated processes of bedding layer forming, reinforcing steel bar binding, formwork erecting, concrete pouring, maintenance, formwork removal and the like, so that the construction progress is slow; (2) a large amount of building garbage can be formed after the reinforced concrete support is dismantled, so that the waste of resources is caused, and the sustainable development of cities is not facilitated.
The steel supports currently used are generally circular steel tubes (specification is generally phi 609 x 16) and H-shaped steel (specification is generally HW350 × 350 × 12 × 19, HW400 × 400 × 13 × 21). The circular steel tube is difficult to assemble in a standard part mode, field welding is basically carried out in a non-standard part mode, the welding quality is difficult to guarantee in the operation environment of foundation pit engineering, the construction progress is influenced, and meanwhile certain potential safety hazards exist. The common H-shaped steel support is basically a standard part, is assembled on site by bolts, has high construction speed and reliable quality, and can be repeatedly used, but because of the limitation of the specification of the shaped steel, the bearing capacity difference between a strong shaft and a weak shaft of a support rod piece is obvious, the material strength can not be fully exerted, and economic waste is caused.
Therefore, there is a need to provide a more optimal solution to the above problems.
Disclosure of Invention
The utility model discloses a remedy the not enough of support system in the aforesaid, provide a lattice formula shaped steel combination braced system, the support member of component system, its strong axle is less with the bearing capacity difference of weak axle, is the standard component through mill's processing, transports to the construction site, and bolted connection is used to each component, accomplishes on-the-spot erection joint, can improve foundation ditch horizontal support structure's efficiency of construction, improvement construction quality, reduction of erection time, saving construction cost by a wide margin.
The purpose of the utility model can be realized through the following technical scheme:
lattice formula shaped steel combination braced system, the horizontal support of this system mainly used foundation ditch engineering, its characterized in that: the device consists of an enclosure , a support rod piece, a connecting member, a prestress loading device, a servo control device, a joist and an upright post; enclosure is arranged at the end or inside of a support pile/wall, support rods prop against the inside of enclosure , and the support pile/wall transmits the soil pressure to enclosure and then is balanced by the support rods; the support rod piece is provided with a prestress loading device, and the prestress loading device is controlled by a servo control device to adjust the support shaft force; the joist is arranged below the support rod member and transmits the load to the lower soil layer through the upright post, and all members of the system are connected through bolts;
the supporting rod piece is of a lattice type steel structure, the cross section of the supporting rod piece is composed of two or more H-shaped steel sections, the flange plates of the H-shaped steel are connected through batten plates to form the lattice type steel structure, end plates are arranged at two ends of the lattice type steel structure, and the end plates and the flange plates are provided with bolt holes and used for on-site bolt connection of a foundation pit horizontal supporting system;
after the supporting rod pieces are coaxially assembled, a group of supporting rod pieces are formed, and the prestress loading device is arranged near the end part of each group of steel supports;
the servo control device independently controls each prestress loading device, and each group of steel supports independently bear the soil pressure transmitted by the ring in the support range.
The enclosure is made of reinforced concrete, profiled steel or a combination of reinforced concrete and profiled steel.
The connecting members comprise non-90-degree conversion members, transverse connecting members and axial connecting members;
the non-90-degree conversion component is suitable for connecting two support rod pieces which are not vertical and are not coaxial, the non-90-degree conversion component is formed by welding steel plates, the height of the non-90-degree conversion component is smaller than the net distance between the upper wing edge plate and the lower wing edge plate of the H-shaped steel of the support rod piece, the width of the non-90-degree conversion component is the same as the width of the end plate of the support rod piece, when the non-90-degree conversion component is used, one end of the non-90-degree conversion component is inserted between the upper wing;
the transverse connecting member is suitable for connecting two vertical supporting rod pieces, one end of the transverse connecting member is trapezoidal, the other end of the transverse connecting member is rectangular, the length and the opening position of the transverse connecting member are matched with those of the supporting rod pieces and meet the requirement of manual installation, when the transverse connecting member is used, the trapezoidal end is connected with the transversely arranged supporting rod pieces through bolts, and the rectangular end is connected with the axially arranged supporting rod pieces through bolts;
the axial connecting member is suitable for connecting two same-shaft support rod pieces, the axial connecting member is rectangular, the width of the axial connecting member is the same as that of the support rod pieces, the length and the opening position of the axial connecting member are matched with those of the support rod pieces and meet the requirement of manual installation, when the axial connecting member is used, the axial connecting member covers the outer sides of the H-shaped steel flange plates of the two same-shaft support rod pieces, and the support rod pieces and the axial connecting member are connected through bolts.
The prestress loading device is a self-locking hydraulic jack, and the servo control device controls the prestress loading device to adjust the axial force of the supporting rod piece according to the requirement of the supporting axial force, so that the deformation of the foundation pit is controlled, and the influence of foundation pit engineering on the surrounding environment is reduced.
The joist be located the below of support member, the stand is vertical to be arranged in the foundation ditch inside, the joist is attached to the stand, the gravity and the upper portion construction load of support member pass through joist and stand and transmit to lower part soil layer.
Each component of the lattice type section steel combined supporting system is a standard part processed in a factory, and the components are transported to a building construction site and assembled and installed on the site through bolt connection.
And all the components of the lattice type section steel combined supporting system are dismantled and recovered after the service cycle of the horizontal supporting structure of the foundation pit is ended.
Compared with the prior art, the utility model has the advantages of it is following:
(1) each component of the lattice type combined steel supporting system is a standard component processed in a factory, and is transported to a building construction site, and the components are assembled and installed on site in a bolt connection mode, so that the influence of human and weather factors is greatly reduced, the construction quality is reliable, and the use risk of a foundation pit is reduced;
(2) each component of the lattice type combined section steel supporting system is convenient to disassemble and assemble, construction is rapid, and the construction period can be greatly shortened;
(3) each component of the lattice type combined steel supporting system is low in loss rate, long in turnover period and high in recycling rate, and energy conservation, emission reduction and green construction can be effectively realized;
(4) the strong shaft and the weak shaft of the support rod piece of the lattice type combined section steel support system can be exerted in a balanced manner, so that the material strength can be effectively exerted, and the cost is saved;
(5) the supporting rods of the lattice type combined steel supporting system independently bear the soil pressure transmitted by the in the respective range, the stress is clear, and the monitoring and the first-aid repair are convenient;
(6) the prestress loading device and the servo control device which are contained in the lattice type combined steel supporting system can be adjusted according to the requirement of supporting shaft force, so that the deformation of the foundation pit is controlled, and the influence of foundation pit engineering on the surrounding environment is greatly reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic view of a lattice type combined steel supporting system according to the present invention;
fig. 2 is a supporting rod member according to the present invention;
FIG. 3 is a schematic view of the connection of two non-perpendicular and non-coaxial support rods according to the present invention;
fig. 4 is a schematic view of the connection of two support rods perpendicular to each other according to the present invention;
fig. 5 is a schematic view of the connection of two coaxial support rods according to the present invention;
fig. 6 is a schematic view of the position relationship among the support rods, joists and columns according to the present invention.
Code description in the figure: 100-support piles/walls; 200-circumference ; 300-support bar, 301-H-beam, 302-flange plate bolt hole, 303-connecting gusset plate, 304-end, 305-end bolt hole; 400-non-90 ° conversion means; 500-a transverse connecting member; 600-an axial connection member; 700-prestress loading device; 800-servo control device, 801-hydraulic oil pipeline; 900-joist; 1000-column; 1100-bolt.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting of the invention.
As shown in fig. 1, for a specific foundation pit supporting construction, prior to the peripheral construction of a support pile/wall 100, a wall 200 is arranged at the end or the inner side of the support pile/wall, a support rod 300 is supported at the inner side of a wall 200, the support pile/wall 100 transmits the soil pressure to a wall 200, the soil pressure is balanced by the support rod 300, a prestress loading device 700 is arranged on the support rod 300, a servo control device 800 is communicated with the prestress loading device 700 through a hydraulic oil pipeline 801, the servo control device 800 realizes the loading or unloading of the prestress loading device 700 by controlling the flow direction of hydraulic oil, a joist 900 is arranged below the support rod 300 and transmits the load to the lower soil layer through a vertical column 1000, the components are assembled through a non-90-degree conversion component 400, a transverse connection component 500, an axial connection component 600 and a bolt 1100, after the service cycle of the horizontal foundation pit supporting structure is finished, and dismantling and recovering the components.
As shown in fig. 2, the support rod 300 includes an H-beam 301, a connecting gusset plate 303, and an end plate 304, wherein a bolt hole 302 is reserved in a flange plate of the H-beam 301, a bolt hole 305 is reserved in the end plate, and two or more flange plates of the H-beam 301 are connected by the connecting gusset plate 303 and end portions are connected by the end plate 304, thereby forming a lattice-type beam structure. In order to realize the assembly type installation of the horizontal supporting member of the foundation pit, the supporting rod 300 is a standard component processed according to a certain modulus in a factory.
As shown in fig. 3, the two support rods 300 which are not vertical and not coaxial are assembled through the flange plate reserved bolt holes 302, the non-90 ° conversion mechanism 400 and the bolts 1100.
As shown in fig. 4, the two support rods 300 perpendicular to each other are assembled through the flange plate preformed bolt holes 302, the cross connecting members 500 and the bolts 1100.
As shown in fig. 5, the two support bars 300 perpendicular to each other are assembled by the flange plate preformed bolt hole 302, the end plate preformed bolt hole 305, the axial connecting member 600, and the bolt 1100.
As shown in fig. 6, the joist 900 is located below the plurality of support bars 300, the columns 1000 are vertically arranged inside the foundation pit, the joist 900 is attached to the columns 1000 through bolts 1100, the gravity and the upper construction load of the support bars 300 are transmitted to the lower soil layer through the columns 1000, and the columns 1000 serve as the fulcrums of the support bars 300, so that the stability of the support bars 300 can be improved.
The above detailed description of the embodiments of the present invention provides a general person skilled in the art with changes in the detailed implementation and application range according to the idea of the embodiments of the present invention. The protection scope of the present invention is not limited to the technical solution mentioned in the present embodiment, and any technical solution suggested by the present invention falls into the protection scope of the present invention.
Claims (6)
1. Lattice formula shaped steel combination braced system, the horizontal support of this system mainly used foundation ditch engineering, its characterized in that: the device consists of an enclosure , a support rod piece, a connecting member, a prestress loading device, a servo control device, a joist and an upright post; enclosure is arranged at the end or inside of a support pile/wall, support rods prop against the inside of enclosure , and the support pile/wall transmits the soil pressure to enclosure and then is balanced by the support rods; the support rod piece is provided with a prestress loading device, and the prestress loading device is controlled by a servo control device to adjust the support shaft force; the joist is arranged below the support rod member and transmits the load to the lower soil layer through the upright post, and all members of the system are connected through bolts;
the supporting rod piece is of a lattice type steel structure, the cross section of the supporting rod piece is composed of two or more H-shaped steel sections, the flange plates of the H-shaped steel are connected through batten plates to form the lattice type steel structure, end plates are arranged at two ends of the lattice type steel structure, and the end plates and the flange plates are provided with bolt holes and used for on-site bolt connection of a foundation pit horizontal supporting system;
after the supporting rod pieces are coaxially assembled, a group of supporting rod pieces are formed, and the prestress loading device is arranged near the end part of each group of steel supports;
the servo control device independently controls each prestress loading device, and each group of steel supports independently bear the soil pressure transmitted by the ring in the support range.
2. The lattice type steel composite support system of claim 1, wherein: the enclosure is made of reinforced concrete, profiled steel or a combination of reinforced concrete and profiled steel.
3. The lattice type steel composite support system of claim 1, wherein: the connecting members comprise non-90-degree conversion members, transverse connecting members and axial connecting members;
the non-90-degree conversion component is suitable for connecting two support rod pieces which are not vertical and are not coaxial, the non-90-degree conversion component is formed by welding steel plates, the height of the non-90-degree conversion component is smaller than the net distance between the upper wing edge plate and the lower wing edge plate of the H-shaped steel of the support rod piece, the width of the non-90-degree conversion component is the same as the width of the end plate of the support rod piece, when the non-90-degree conversion component is used, one end of the non-90-degree conversion component is inserted between the upper wing;
the transverse connecting member is suitable for connecting two vertical supporting rod pieces, one end of the transverse connecting member is trapezoidal, the other end of the transverse connecting member is rectangular, the length and the opening position of the transverse connecting member are matched with those of the supporting rod pieces and meet the requirement of manual installation, when the transverse connecting member is used, the trapezoidal end is connected with the transversely arranged supporting rod pieces through bolts, and the rectangular end is connected with the axially arranged supporting rod pieces through bolts;
the axial connecting member is suitable for connecting two same-shaft support rod pieces, the axial connecting member is rectangular, the width of the axial connecting member is the same as that of the support rod pieces, the length and the opening position of the axial connecting member are matched with those of the support rod pieces and meet the requirement of manual installation, when the axial connecting member is used, the axial connecting member covers the outer sides of the H-shaped steel flange plates of the two same-shaft support rod pieces, and the support rod pieces and the axial connecting member are connected through bolts.
4. The lattice type steel composite support system of claim 1, wherein: the prestress loading device is a self-locking hydraulic jack, and the servo control device controls the prestress loading device to adjust the axial force of the supporting rod piece according to the requirement of the supporting axial force, so that the deformation of the foundation pit is controlled, and the influence of foundation pit engineering on the surrounding environment is reduced.
5. The lattice type steel composite support system of claim 1, wherein: the joist is located the below of support member, the stand is vertical to be arranged in the foundation ditch, and the joist is attached to the stand, and the gravity and the upper portion construction load of support member pass through joist and stand and transmit to lower part soil layer.
6. The lattice type steel composite support system of claim 1, wherein: each component forming the system is a standard component processed in a factory, and the components are transported to a building construction site and assembled and installed on the site through bolt connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020533471.XU CN212077961U (en) | 2020-04-13 | 2020-04-13 | Lattice type section steel combined supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020533471.XU CN212077961U (en) | 2020-04-13 | 2020-04-13 | Lattice type section steel combined supporting system |
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| CN212077961U true CN212077961U (en) | 2020-12-04 |
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| CN202020533471.XU Active CN212077961U (en) | 2020-04-13 | 2020-04-13 | Lattice type section steel combined supporting system |
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