CN111218941A - Combined type section steel supporting rod piece - Google Patents
Combined type section steel supporting rod piece Download PDFInfo
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- CN111218941A CN111218941A CN202010284974.2A CN202010284974A CN111218941A CN 111218941 A CN111218941 A CN 111218941A CN 202010284974 A CN202010284974 A CN 202010284974A CN 111218941 A CN111218941 A CN 111218941A
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- support rod
- steel
- rod piece
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to a combined type steel support rod piece, which adopts a pair of H-shaped steels and is connected into a whole through batten plates. The combined type steel support rod piece is mainly used for horizontal support of a foundation pit. In order to facilitate transportation and installation, the combined type steel support rod piece is made of a certain modulus length, end plates are welded at two ends of each support rod piece, bolt holes are reserved in the two ends of each support rod piece, and meanwhile bolt holes are reserved in the steel flange plate at a certain interval. The supporting rod pieces are spliced through the bolt holes reserved in the end plates and the flange plates, and the steel structure is assembled and constructed. The supporting rod pieces are processed into standard pieces in a factory, conveyed to a building construction site, and assembled and installed on the site through the bolt connection, so that the construction efficiency of the horizontal supporting structure of the foundation pit can be greatly improved. After the service cycle of the horizontal supporting structure of the foundation pit is finished, the supporting rod piece is used for the next project after being dismantled and maintained, green construction is achieved, and construction cost is effectively reduced.
Description
Technical Field
The invention relates to an assembled horizontal supporting structure of foundation pit engineering, in particular to a combined type section steel supporting rod piece consisting of H-shaped steel.
Background
With the large-scale development and application of the assembly type structure in China, the assembly type technology is more mature. The foundation pit is used as temporary engineering, more consideration on durability and complex load is not needed, and the assembly type must become the development trend of the foundation pit engineering. At present, the anchor rod and reinforced concrete support are still used to foundation ditch engineering's horizontal support to give first place to, and the anchor rod is generally anchored in the foundation ditch outside, can influence the development of adjacent landmass, and reinforced concrete supports not only the construction progress slowly, and will form a large amount of building rubbish after demolising, makes the city face great environmental protection pressure.
With the development of the assembly type, steel supports are adopted in more and more foundation pit projects due to the easy assembly characteristic of steel. The steel support rod piece is basically a standard piece processed in a factory, and is assembled by bolts after being transported to the site, so that the construction speed is high, the quality is reliable, and the reuse rate is high. But present steel brace member generally is the H shaped steel of circular steel tube or HW class, needs supplementary a large amount of weldment work when the circular steel tube installation, and welding quality is hardly guaranteed to the operation environment of foundation ditch engineering, not only influences the construction progress, has certain potential safety hazard again simultaneously. The bearing capacity difference between the strong axis and the weak axis of the HW H-shaped steel is obvious, the strength of the material 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 invention provides a combined type steel support rod piece for making up the defects of the inner support system, the difference of the bearing capacity of a strong shaft and a weak shaft is smaller, the combined type steel support rod piece is processed into a standard piece by a factory, the standard piece is transported to a building construction site, and the standard piece is assembled and installed on the site through bolt connection, so that the construction efficiency of a horizontal support structure of a foundation pit can be greatly improved, the construction quality is improved, the construction period is shortened, and the construction cost is saved.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a modular shaped steel support member which characterized in that: the supporting rod piece comprises a pair of section steel components with flange plates and web plates, the cross section of each section steel component is I-shaped, the section steel components are processed according to a certain length modulus and are arranged side by side, and the section steel components are connected and fixed by welding batten plates on the inner sides of two adjacent flange plates;
the head and tail ends of the support rod piece are closed through end plates, the end plates are rectangular, and the size of the end plates covers the whole cross section of the support rod piece;
the cross section of the support rod piece comprises a rectangular space and two groove-shaped spaces, the rectangular space is positioned between the two groove-shaped spaces and is relatively closed, and the two groove-shaped spaces are open;
the flange plate of the support rod piece is provided with a plurality of bolt holes, the bolt holes are arranged in the rectangular space and the groove-shaped spaces on two sides except the end plate, and the bolt holes are arranged in the groove-shaped spaces on two sides of the other areas along the support rod piece.
The pair of section steel members are H-shaped steel and have the length not more than 12 meters.
The end plate is provided with bolt holes and spare holes, the bolt holes are used for connecting the combined type steel supporting rods or the combined type steel supporting rods and the enclosure , and the spare holes are used for hoisting, auxiliary installation and monitoring.
The connection mode between the support rods comprises: axial connection, orthogonal connection and oblique connection;
the connection between the support rod pieces is realized through a connecting member and a bolt;
when the connecting member is axially connected and installed, the connecting member is arranged on the top surfaces or the bottom surfaces of a pair of section steels near the end plates of the two support rod pieces, a plurality of bolts penetrate through the connecting piece and the flange plates of the support rod piece section steels and are screwed tightly, and the positions of the bolts correspond to bolt holes of rectangular spaces near the end plates of the two support rod pieces and bolt holes of groove-shaped spaces on two sides;
when the connecting member is transversely connected and installed, one end of the connecting member is arranged on the top surface or the bottom surface of the support rod connecting side section steel which is axially arranged, the other end of the connecting member is arranged on the top surface or the bottom surface of a pair of section steel which is close to an end plate of the support rod which is transversely arranged, a plurality of bolts penetrate through the connecting member and a flange plate of the support rod section steel and are screwed, the bolts are axially arranged, the positions of the bolts correspond to bolt holes of groove-shaped spaces of the connecting side of the support rod which is axially arranged, and the positions of the bolts correspond to bolt holes of rectangular spaces of the support rod which;
when the oblique connection installation is carried out, one end of the connecting member is arranged between two flange plates of the support rod connecting side section steel which is axially arranged, the other end of the connecting member is coaxial with the support rod which is obliquely arranged, a plurality of bolts penetrate through the connecting member and the flange plates of the support rod section steel and are screwed, the bolts are axially arranged, the positions of the bolts correspond to bolt holes of a groove-shaped space of the connecting side of the support rod which is axially arranged, and the positions of the bolts correspond to bolt holes of an end plate of the support rod which is obliquely arranged;
the bolts comprise common bolts and high-strength bolts.
The batten plates are uniformly arranged along the support rod piece, and connect the two separated sections into a whole and serve as constraint ends inside the support rod piece; inside the support rod piece, a pair of section steels between the two patch plates work independently, and the free length is the distance between the patch plates; the supporting rod piece integrally works together through the arrangement of the batten plate and the pair of profile steels, and the free length is the distance between lateral supporting points of the supporting frames; the lower bearing capacity value is used as the designed bearing capacity value of the rod piece in two working states; the lacing plate setting principle ensures that the calculated values of the bearing capacity in two working states are matched so as to improve the utilization rate of materials.
The combined type steel supporting rod piece is characterized in that the position with large local stress is reinforced through the steel reinforcing piece, the steel reinforcing piece is a rectangular plate, the length of the steel reinforcing piece is consistent with the width of the combined type steel supporting rod piece, during use, the steel reinforcing piece is arranged on the top surface or the bottom surface of the supporting rod piece, a plurality of bolts penetrate through the steel reinforcing piece and the flange plate of the steel of the supporting rod piece and are screwed, and the bolt positions correspond to bolt holes of two groove-shaped spaces of the supporting rod piece.
The combined type steel support rod piece is a standard piece processed in a factory and is mainly used for a foundation pit horizontal supporting structure, and after the service cycle of the foundation pit horizontal supporting structure is ended, the support rod piece is detached and repaired and then reused.
Compared with the prior art, the invention has the following advantages:
(1) the combined type steel support rod piece is a standard piece processed in a factory, and is 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) the combined type steel supporting rod piece is convenient to disassemble and assemble and quick to construct, and the construction period can be greatly shortened;
(3) the combined type steel support rod piece has low loss rate, long turnover period and high recycling rate, and can effectively realize energy conservation, emission reduction and green construction;
(4) the strong shaft and the weak shaft of the combined type steel support rod piece can be exerted in a balanced manner, the material strength can be effectively exerted, and the cost is saved.
Drawings
The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of a sectional type steel support bar according to the present invention;
FIG. 2 is a schematic view of a rectangular space and two side channel spaces formed by the cross section of the combined type steel support bar of the present invention;
FIG. 3 is a schematic view of an H-shaped steel of the combined-type steel support bar of the present invention;
FIG. 4 is a schematic axial connection view of the sectional type steel support bar according to the present invention;
FIG. 5 is a schematic cross-sectional view of the sectional type steel support bar according to the present invention;
fig. 6 is a schematic diagram illustrating the diagonal connection of the sectional type steel support bars according to the present invention.
Code description in the figure: 1-combined section steel supporting rod pieces; 11-section steel; 111-flange plate bolt holes; 12-a terminal plate; 121-end plate bolt holes; 122-end plate spare holes; 13-batten plate; 14-a rectangular space; 15-a trough-shaped space; 2-bolt; 3-an axial connector; 4-a transverse connection; 5-oblique connecting piece; 6-section steel reinforcement.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.
As shown in figure 1, the combined section steel support rod member 1 comprises a section steel 11, a head plate 12 and a batten plate 13. As shown in FIG. 2, a pair of section steels 11 are spliced to form a combined section steel support bar 1, and the cross section of the combined section steel support bar 1 forms a rectangular space 14 and two groove-shaped spaces 15 on two sides. As shown in FIG. 3, the section steel 11 is H-shaped steel, and bolt holes 111 are reserved on the flange plate. An end plate 12 is welded at the end part of the combined type steel support rod member 1, and the end plate 12 can completely cover all the steel sections 11 forming the combined type steel support rod member 1. The end plate 12 is provided with bolt holes 121 and spare holes 122. The first and the last ends of a pair of section steels 11 are aligned and arranged side by side and are connected into a whole through a batten plate 13 welded on the inner side of a section steel flange plate.
In order to realize the assembly type installation of a horizontal supporting member of a foundation pit, the combined type steel supporting rod piece 1 is a standard piece processed by a factory according to a certain length modulus. The bolt holes 111 reserved on the flange plates of the section steel 11 can realize the axial connection, the transverse connection and the oblique connection of the combined section steel support 1. The bolt hole 121 that reserves on end board 12 realizes the slant of combination formula shaped steel support and connects. The end plate 12 is provided with a spare hole 122 for auxiliary installation, support reinforcement and monitoring functions.
As shown in FIG. 4, when the sectional steel support bars 1 are installed in an axial connection, the axial connectors 3 are placed on the top or bottom surfaces of a pair of the section steels 11 near the end plates 12 of the two support bars 1, and a plurality of bolts 2 are inserted through the axial connectors 3 and the flange plates of the support bar section steels 11 and tightened, and the positions of the bolts 2 correspond to the bolt holes 111 of the rectangular space 14 near the end plates 12 of the two support bars and the bolt holes 111 of the groove-shaped spaces 15 at both sides.
As shown in FIG. 5, when the sectional steel support bar 1 is installed in a horizontal connection, one end of the horizontal connecting member 4 is placed on the top or bottom surface of the support bar connection side section steel 11 arranged in the axial direction, and the other end is placed on the top or bottom surface of a pair of section steels 11 near the support bar end plate 12 arranged in the horizontal direction, and a plurality of bolts 2 are passed through the connecting member and the flange plate of the support bar section steel 11 and tightened, the bolts 2 are positioned on the side of the axial arrangement corresponding to the bolt holes 111 of the groove-shaped spaces 15 on the connection side of the support bar 1 arranged in the axial direction, and the bolts 2 are positioned on the side of the horizontal arrangement corresponding to the bolt holes 111 of the rectangular spaces 14 of the support bar 1 arranged.
As shown in fig. 6, when the combined type steel support bar 1 is installed in an oblique connection, one end of the oblique connecting member 5 is placed between two flange plates of the connection side steel 11 of the support bar 1 arranged in an axial direction, the other end is coaxial with the support bar 1 arranged in an oblique direction, a plurality of bolts 2 are passed through the connecting member and the flange plates of the support bar steel 11 and screwed, the position of the bolt 2 on the side of the axial arrangement corresponds to the bolt hole 111 of the connection side groove-shaped space 15 of the support bar 1 arranged in an axial direction, and the position of the bolt 2 on the side of the oblique arrangement corresponds to the bolt hole 111 of the end plate 12 of the support bar 1 arranged in an oblique. In general, when oblique connection is performed, the stress at the connection node is large, the section steel reinforcement member 6 is arranged on the top surface or the bottom surface of the support rod member 1, a plurality of bolts 2 penetrate through the section steel reinforcement member 6 and the flange plate of the section steel 11 of the support rod member 1 and are screwed, and the positions of the bolts 2 correspond to the bolt holes 111 of the two groove-shaped spaces 15 of the support rod member 1.
The above detailed description of the embodiments of the present invention provides those skilled in the art with changes in the form and details of the embodiments and applications. The protection scope of the present invention is not limited to the technical solutions mentioned in the embodiments, and any technical solutions suggested by the present invention fall into the protection scope of the present invention.
Claims (7)
1. The utility model provides a modular shaped steel support member which characterized in that: the supporting rod piece comprises a pair of section steel components with flange plates and web plates, the cross section of each section steel component is I-shaped, the section steel components are processed according to a certain length modulus and are arranged side by side, and the section steel components are connected and fixed by welding batten plates on the inner sides of two adjacent flange plates;
the head and tail ends of the support rod piece are closed through end plates, the end plates are rectangular, and the size of the end plates covers the whole cross section of the support rod piece;
the cross section of the support rod piece comprises a rectangular space and two groove-shaped spaces, the rectangular space is positioned between the two groove-shaped spaces and is relatively closed, and the two groove-shaped spaces are open;
the flange plate of the support rod piece is provided with a plurality of bolt holes, the bolt holes are arranged in the rectangular space and the groove-shaped spaces on two sides except the end plate, and the bolt holes are arranged in the groove-shaped spaces on two sides of the other areas along the support rod piece.
2. The sectional steel support bar of claim 1, wherein: the pair of section steel members are H-shaped steel and have the length not more than 12 meters.
3. The sectional steel support bar of claim 1, wherein: the end plate is provided with bolt holes and spare holes, the bolt holes are used for connecting the combined type steel supporting rods or the combined type steel supporting rods and the enclosure , and the spare holes are used for hoisting, auxiliary installation and monitoring.
4. The sectional steel support bar of claim 1, wherein: the connection mode between the support rods comprises the following steps: axial connection, orthogonal connection and oblique connection;
the connection between the support rod pieces is realized through a connecting member and a bolt;
when the connecting member is axially connected and installed, the connecting member is arranged on the top surfaces or the bottom surfaces of a pair of section steels near the end plates of the two support rod pieces, a plurality of bolts penetrate through the connecting piece and the flange plates of the support rod piece section steels and are screwed tightly, and the positions of the bolts correspond to bolt holes of rectangular spaces near the end plates of the two support rod pieces and bolt holes of groove-shaped spaces on two sides;
when the connecting member is transversely connected and installed, one end of the connecting member is arranged on the top surface or the bottom surface of the support rod connecting side section steel which is axially arranged, the other end of the connecting member is arranged on the top surface or the bottom surface of a pair of section steel which is close to an end plate of the support rod which is transversely arranged, a plurality of bolts penetrate through the connecting member and a flange plate of the support rod section steel and are screwed, the bolts are axially arranged, the positions of the bolts correspond to bolt holes of groove-shaped spaces of the connecting side of the support rod which is axially arranged, and the positions of the bolts correspond to bolt holes of rectangular spaces of the support rod which;
when the oblique connection installation is carried out, one end of the connecting member is arranged between two flange plates of the support rod connecting side section steel which is axially arranged, the other end of the connecting member is coaxial with the support rod which is obliquely arranged, a plurality of bolts penetrate through the connecting member and the flange plates of the support rod section steel and are screwed, the bolts are axially arranged, the positions of the bolts correspond to bolt holes of a groove-shaped space of the connecting side of the support rod which is axially arranged, and the positions of the bolts correspond to bolt holes of an end plate of the support rod which is obliquely arranged;
the bolts comprise common bolts and high-strength bolts.
5. The sectional steel support bar of claim 1, wherein: arranging a plurality of batten plates along the support rod piece, wherein the batten plates connect two separated sections into a whole and serve as constraint ends inside the support rod piece; inside the support rod piece, a pair of section steels between the two patch plates work independently, and the free length is the distance between the patch plates; the supporting rod piece integrally works together through the arrangement of the batten plate and the pair of profile steels, and the free length is the distance between lateral supporting points of the supporting frames; the lower bearing capacity value is used as the designed bearing capacity value of the rod piece in two working states; the lacing plate setting principle ensures that the calculated values of the bearing capacity in two working states are matched so as to improve the utilization rate of materials.
6. The sectional steel support bar of claim 1, wherein: the combined type steel supporting rod piece is reinforced at a position with large local stress through the steel reinforcing piece, the steel reinforcing piece is a rectangular plate, the length of the steel reinforcing piece is consistent with the width of the combined type steel supporting rod piece, during use, the steel reinforcing piece is arranged on the top surface or the bottom surface of the supporting rod piece, a plurality of bolts penetrate through the steel reinforcing piece and the flange plate of the steel of the supporting rod piece and are screwed, and the bolt positions correspond to bolt holes of two groove-shaped spaces of the supporting rod piece.
7. The sectional steel support bar of claim 1, wherein: modular shaped steel support member is the standard component of mill's processing, mainly used foundation ditch horizontal support structure, and after foundation ditch horizontal support structure's life cycle ended, used repeatedly after the support member demolishd, overhauld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010284974.2A CN111218941A (en) | 2020-04-13 | 2020-04-13 | Combined type section steel supporting rod piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010284974.2A CN111218941A (en) | 2020-04-13 | 2020-04-13 | Combined type section steel supporting rod piece |
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| Publication Number | Publication Date |
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| CN111218941A true CN111218941A (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010284974.2A Pending CN111218941A (en) | 2020-04-13 | 2020-04-13 | Combined type section steel supporting rod piece |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127369A (en) * | 2020-08-31 | 2020-12-25 | 中铁第四勘察设计院集团有限公司 | Fabricated foundation pit steel supporting structure and construction method thereof |
| CN112177157A (en) * | 2020-10-10 | 2021-01-05 | 中建科工集团有限公司 | Tolerance semi-rigid node and construction method |
| CN113022745A (en) * | 2021-03-19 | 2021-06-25 | 上海二十冶建设有限公司 | Horizontal transportation tool for steam turbine condenser and application method thereof |
| CN113737811A (en) * | 2021-09-22 | 2021-12-03 | 中国一冶集团有限公司 | Assembly type supporting structure in narrow foundation pit and construction method thereof |
| CN114351722A (en) * | 2022-01-17 | 2022-04-15 | 中国建筑第八工程局有限公司 | Steel-concrete combined inner support structure for foundation pit |
| CN115075259A (en) * | 2022-07-19 | 2022-09-20 | 东通岩土科技股份有限公司 | Building foundation pit supporting system |
| CN115233693A (en) * | 2022-08-12 | 2022-10-25 | 东通岩土科技股份有限公司 | Steel support connecting system |
-
2020
- 2020-04-13 CN CN202010284974.2A patent/CN111218941A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127369A (en) * | 2020-08-31 | 2020-12-25 | 中铁第四勘察设计院集团有限公司 | Fabricated foundation pit steel supporting structure and construction method thereof |
| CN112177157A (en) * | 2020-10-10 | 2021-01-05 | 中建科工集团有限公司 | Tolerance semi-rigid node and construction method |
| CN113022745A (en) * | 2021-03-19 | 2021-06-25 | 上海二十冶建设有限公司 | Horizontal transportation tool for steam turbine condenser and application method thereof |
| CN113737811A (en) * | 2021-09-22 | 2021-12-03 | 中国一冶集团有限公司 | Assembly type supporting structure in narrow foundation pit and construction method thereof |
| CN114351722A (en) * | 2022-01-17 | 2022-04-15 | 中国建筑第八工程局有限公司 | Steel-concrete combined inner support structure for foundation pit |
| CN115075259A (en) * | 2022-07-19 | 2022-09-20 | 东通岩土科技股份有限公司 | Building foundation pit supporting system |
| CN115233693A (en) * | 2022-08-12 | 2022-10-25 | 东通岩土科技股份有限公司 | Steel support connecting system |
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