CN114411753A - Splayed lattice type truss steel supporting structure - Google Patents
Splayed lattice type truss steel supporting structure Download PDFInfo
- Publication number
- CN114411753A CN114411753A CN202210015547.3A CN202210015547A CN114411753A CN 114411753 A CN114411753 A CN 114411753A CN 202210015547 A CN202210015547 A CN 202210015547A CN 114411753 A CN114411753 A CN 114411753A
- Authority
- CN
- China
- Prior art keywords
- steel support
- truss
- splayed
- truss steel
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Abstract
The invention relates to a splayed lattice type truss steel support structure which comprises an end truss steel support and a pair of symmetrically arranged inclined strut structures; the end truss steel support comprises 2 support units which are sequentially connected, each support unit comprises a pair of parallel main stress rods, the end of each main stress rod is provided with a connector, the outer side of each connector is provided with a big lug plate, and the inner side of each connector is provided with a pair of small lug plates which are obliquely forwards and obliquely backwards and are used for being hinged with the cross oblique web members; the bracing structure includes a pair of parallel bracing, the upper end of bracing have be used for with big otic placode articulated otic placode connecting piece. The end part of the truss is of an inclined strut reinforcing structure, so that the bearing range of the truss is enlarged, the excavation space is enlarged, and the steel consumption is reduced.
Description
Technical Field
The invention relates to a splayed lattice type truss steel supporting structure, and belongs to the technical field of building construction.
Background
In order to ensure the safety of the construction of the underground structure and the surrounding environment of the foundation pit, the side wall of the foundation pit and the surrounding environment need to be supported, reinforced and protected. In deep foundation pit engineering of high-rise buildings and subway construction, most of the deep foundation pit engineering is excavated in cities, various structures such as traffic main roads, built buildings or pipelines and the like usually exist around the foundation pit, and a steel structure inner support system is widely applied in order to ensure the safety of the surrounding environment of the foundation pit, save the construction period and save the cost.
In the prior art, steel supports are arranged too densely, so that the effective space of excavation is too small, the construction speed is slow, and the steel consumption is too large.
Disclosure of Invention
The invention aims to provide a splayed lattice type truss steel supporting structure, wherein inclined supporting structures are additionally arranged on two sides of an end truss steel support to form a splayed structure, so that the supporting range of each truss can be increased, the distance between the support and the support can be increased to effectively increase the excavation space, and the steel consumption is reduced.
The invention adopts the following technical scheme:
a splayed lattice truss steel support structure comprises an end truss steel support 5 and a pair of symmetrically arranged inclined support structures 4; the end truss steel support 5 comprises one or a plurality of support units which are connected in sequence, each support unit comprises a pair of parallel main stress rods 506, the end of each main stress rod 506 is provided with a connecting head 503, the outer side of each connecting head 503 is provided with a big lug plate, and the inner side of each connecting head is provided with a pair of small lug plates which are inclined forwards and inclined backwards and are used for being hinged with the cross diagonal web members 504; the bracing structure 4 comprises a pair of parallel braces 402, the upper ends of the braces 402 having ear plate connectors 404 for hinging with the big ear plate.
Preferably, the front part of the main force-bearing rod 506 at the foremost end of the supporting unit is fixedly connected with the conversion head 502, and the front part of the conversion head 502 is fixedly connected with the prestress applying device II 501.
Preferably, a cross node 505 is arranged in the middle of the cross diagonal web member 504.
Furthermore, one end of the cross diagonal web member 504 is connected with the connecting head 503 by a pin, and the other end is in bolt butt joint with the cross node 505.
Preferably, the main stress bar 506 is connected by a plurality of section steels 507 through a batten 508, the connector 503 is used for connecting the main stress bar 506, the cross diagonal web member 504, the diagonal brace 4 and the reinforced transverse web member 509, the reinforced transverse web member 509 is composed of multi-heel section steels, and the section steel specification is the same as that of the main stress bar.
Preferably, the reinforced concrete supporting frame further comprises a reinforced concrete crown/waist beam 1, a secondary pouring structure 2, a reinforced concrete corbel 3 and a reinforced concrete corbel 3, wherein the reinforced concrete crown/waist beam provides an installation plane and an angle for the steel support, so that the stress of the steel support is simple and clear, and the secondary pouring structure 2 has the functions of adjusting and leveling so as to reduce the influence of construction errors of the surrounding structure on the steel support.
Preferably, the steel truss structure further comprises a middle truss steel support 6, and the rear end of the end truss steel support 5 is connected with the middle truss steel support 6.
Preferably, the bracing structure 4 further comprises an expansion node 401, a cross web member 403 and a prestress applying device i 405; the expansion node 401 can be expanded according to the number of the section steels, the inclined struts are connected through cross web members 403, and prestress application devices I405 can apply prestress to the inclined struts 402.
The invention has the beneficial effects that:
1) the end part of the truss adopts an inclined strut reinforcing structure, so that the bearing range of the truss is enlarged, the excavation space is enlarged, and the steel consumption is reduced.
2) The cross web members are adopted for the end truss steel supports, the integral stability and strength of the end truss are enhanced, and the bearing capacity is prevented from being influenced by unbalanced stress caused by asymmetrical excavation of a soil layer in the excavation process of a foundation pit.
3) The inclined strut structure is connected with the end part truss through a pin shaft, and the installation is convenient.
4) The inclined strut structure, the end truss structure and the middle truss structure are all truss structures, so that the integral stability is high, and the safety is high.
5) Main stress bar shaped steel, enhancement mode horizontal web member shaped steel, bracing shaped steel all adopt the shaped steel of unified specification, and assembly efficiency is high.
6) The inclined strut prestress devices on the two sides can be synchronously applied, so that the unbalanced stress is avoided.
Drawings
Fig. 1 is a schematic view of a sprag structure.
Fig. 2 is a schematic view of a connection head.
Figure 3 is a schematic view of the connection node of the bracing structure to the end truss steel support. Wherein (a) is a plan view and (b) is a sectional view at 1 in (a).
Fig. 4 is a schematic plan view of the splay lattice truss steel support structure of the present invention.
Figure 5 is a schematic illustration of an end truss steel support.
Figure 6 is a schematic illustration of a mid-truss steel support.
In the figure, 1, a reinforced concrete crown/wale, 2, a secondary pouring structure, 3, a reinforced concrete corbel, 4, an inclined strut structure, 401, an expansion node, 402, an inclined strut, 403, a transverse web member, 404, an ear plate connecting piece, 405, a prestress applying device I, 404a and a pin shaft; 5. the end truss steel support comprises 501 prestress applying devices II, 502 conversion heads, 503 connecting heads, 504 cross diagonal web members, 505 cross nodes, 506 main stress rods, 507 section steel, 508 batten plates and 509 reinforced transverse web members; 503a small ear plate, 503b section steel, 503c connecting plate, 503d reinforcing plate and 503e big ear plate; 6. the truss comprises a middle truss steel support 601, a transverse web member 602, a single inclined web member 603, a node head 604, a main stress rod 605, a batten plate 606 and section steel.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1-6, the splayed lattice truss steel support structure is composed of a reinforced concrete crown/wale 1, a secondary pouring structure 2, a reinforced concrete corbel 3, an inclined support structure 4, an end truss steel support 5 and a middle truss steel support 6; the reinforced concrete corbel 3 provides a mounting plane and an angle for the steel support, so that the stress of the steel support is simple and clear, the secondary pouring structure 2 has the functions of adjusting and leveling, and the influence of the construction error of the surrounding structure on the steel support can be reduced to the minimum.
Referring to fig. 1, the inclined strut structure 4 is composed of expansion nodes 401, inclined struts 402, cross web members 403, ear plate connecting members 404 and prestress applying devices 405, the inclined struts 406 may be composed of a plurality of section steels connected through gusset plates, the expansion nodes 401 may be expanded according to the number of the section steels, the inclined struts are connected by the cross web members 403, and the prestress applying devices i 405 may apply prestress to the inclined struts.
Referring to fig. 5, the end truss steel support 5 comprises a prestress applying device ii 501, a conversion head 502, a connection head 503, a cross diagonal web member 504, a cross node 505, a main stress member 506 and a reinforced cross web member 509, the prestress applying device 5 can apply prestress to the steel support, the main stress member 506 is provided with a plurality of section steels 507 connected through a gusset plate 508, the connection head 503 is used for connecting the main stress member 506, the cross diagonal web member 504, the diagonal brace 4 and the reinforced cross web member 509, the reinforced cross web member 509 is composed of multi-heel section steels, the section steels have the same specification as the main stress member section steels, the uniform specification improves assembly efficiency, the conversion head is used for connecting the steel support and the prestress applying device to increase stress intensity of the end head, so that the section steels of the main stress member are uniformly stressed, the cross node 505 is used for connecting the cross diagonal web members 504 on four sides, and enhances strength and stability of the end truss steel support, one end of the cross diagonal web member 504 is connected with the connector by a pin shaft, and the other end is in butt joint with the cross node bolt.
Referring to fig. 2-3 and 5, the connecting head 503 is assembled by a plurality of steel sections in vertical and horizontal directions, and has two types of ear plates on its side edges, a small ear plate is connected with the cross diagonal web member 504, and a large ear plate is connected with the diagonal brace.
Referring to fig. 4, the inclined strut structure 4 is connected with the end truss steel support 5 through a pin shaft, and the inclined strut structure 4 is directly connected with the lug plate in an overlap joint from top to bottom, so that the installation is convenient.
The end part of the truss is of an inclined strut reinforcing structure, so that the bearing range of the truss is enlarged, the excavation space is enlarged, and the steel consumption is reduced; the end truss steel support adopts cross web members, so that the integral stability and strength of the end truss are enhanced, and the bearing capacity of the support is prevented from being influenced by unbalanced stress caused by asymmetrical excavation of a soil layer in the excavation process of a foundation pit; the inclined strut structure is connected with the end part truss through a pin shaft, so that the installation is convenient; the inclined strut structure, the end truss structure and the middle truss structure are all truss structures, so that the integral stability is high and the safety is high; the main stress rod profile steel, the reinforced cross web member profile steel and the inclined strut profile steel are all made of profile steel with uniform specification, so that the assembly efficiency is high; the inclined strut prestress devices on the two sides can synchronously apply to the strut, so that the unbalanced stress is avoided.
While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a splayed lattice truss steel bearing structure which characterized in that:
comprises an end truss steel support (5) and a pair of symmetrically arranged inclined strut structures (4);
the end truss steel support (5) comprises one or a plurality of sequentially connected support units, each support unit comprises a pair of parallel main stress rods (506), the end of each main stress rod (506) is provided with a connecting head (503), the outer side of each connecting head (503) is provided with a big lug plate, and the inner side of each connecting head is provided with a pair of small lug plates which are obliquely forwards and obliquely backwards and are used for being hinged with the cross diagonal web members (504);
the bracing structure (4) comprises a pair of parallel braces (402), the upper ends of the braces (402) having an ear plate connection (404) for articulation with the big ear plate.
2. The splayed lattice truss steel support structure of claim 1 wherein: the connecting head (503) of the main stress rod (506) at the foremost end of the supporting unit is fixedly connected with the conversion head (502), and the front part of the conversion head (502) is fixedly connected with the prestress applying device II (501).
3. The splayed lattice truss steel support structure of claim 1 wherein: the middle of the cross diagonal web member (504) is provided with a cross node (505).
4. The splayed lattice truss steel support structure of claim 3 wherein: one end of the cross diagonal web member (504) is connected with the connecting head (503) by a pin shaft, and the other end is in bolt butt joint with the cross node (505).
5. The splayed lattice truss steel support structure of claim 1 wherein: main atress pole (506) link to each other through lacing plate (508) by a plurality of shaped steel (507), connector (503) are used for connecting main atress pole (506), cross diagonal web member (504), bracing (4), strengthen horizontal web member (509) by many with shaped steel constitution, shaped steel specification is with the shaped steel specification of main atress pole.
6. The splayed lattice truss steel support structure of claim 1 wherein: still include reinforced concrete crown/waist rail (1), secondary casting structure (2), reinforced concrete bracket (3) provide mounting plane and angle for the steel shotcrete atress is simple clear and definite, and secondary casting structure (2) have the effect of adjusting and making level, are used for reducing the influence of structure construction error around to the steel shotcrete.
7. The splayed lattice truss steel support structure of claim 1 wherein: the steel truss structure is characterized by further comprising a middle truss steel support (6), and the rear end of the end truss steel support (5) is connected with the middle truss steel support (6).
8. The splayed lattice truss steel support structure of claim 1 wherein: the diagonal bracing structure (4) further comprises expansion nodes (401), transverse web members (403) and a prestress applying device I (405); the expansion joint (401) can be expanded according to the number of the section steel, the inclined struts are connected through transverse web members (403), and the prestress applying device I (405) can apply prestress to the inclined struts (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015547.3A CN114411753A (en) | 2022-01-07 | 2022-01-07 | Splayed lattice type truss steel supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015547.3A CN114411753A (en) | 2022-01-07 | 2022-01-07 | Splayed lattice type truss steel supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114411753A true CN114411753A (en) | 2022-04-29 |
Family
ID=81272199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210015547.3A Pending CN114411753A (en) | 2022-01-07 | 2022-01-07 | Splayed lattice type truss steel supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114411753A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208415270U (en) * | 2018-05-30 | 2019-01-22 | 江苏宁土工程技术有限公司 | A kind of recyclable steel support structure of deep basal pit assembled |
| CN112160326A (en) * | 2020-09-18 | 2021-01-01 | 上海巨鲲科技有限公司 | Truss string concrete combined supporting system |
| CN213682128U (en) * | 2020-09-18 | 2021-07-13 | 上海巨鲲科技有限公司 | Detachable node and lattice type supporting assembly of foundation pit beam steel supporting truss |
-
2022
- 2022-01-07 CN CN202210015547.3A patent/CN114411753A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208415270U (en) * | 2018-05-30 | 2019-01-22 | 江苏宁土工程技术有限公司 | A kind of recyclable steel support structure of deep basal pit assembled |
| CN112160326A (en) * | 2020-09-18 | 2021-01-01 | 上海巨鲲科技有限公司 | Truss string concrete combined supporting system |
| CN213682128U (en) * | 2020-09-18 | 2021-07-13 | 上海巨鲲科技有限公司 | Detachable node and lattice type supporting assembly of foundation pit beam steel supporting truss |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112160326A (en) | Truss string concrete combined supporting system | |
| CN212612522U (en) | Truss string concrete combined supporting system | |
| CN213682128U (en) | Detachable node and lattice type supporting assembly of foundation pit beam steel supporting truss | |
| CN111270685A (en) | Recyclable support truss, foundation pit support system and subway station construction method | |
| CN216892442U (en) | Multiple lower chord type large-span beam string structure | |
| CN114411753A (en) | Splayed lattice type truss steel supporting structure | |
| CN212026270U (en) | Foundation ditch assembled H shaped steel braced system | |
| CN215630620U (en) | Large-span fish belly type inverted triangular steel truss | |
| CN216040719U (en) | Template support cantilever bearing structure | |
| CN109469257B (en) | Large-span gradual-change polygonal cross section parallel truss roof and construction method | |
| CN111525487A (en) | Utility tunnel self-supporting pipeline support | |
| CN111270686A (en) | Regular splayed bracing support truss steel support | |
| CN211873036U (en) | Regular splayed bracing support truss steel support | |
| CN220619796U (en) | Arched girder combined concrete continuous beam bridge structure | |
| CN214939387U (en) | Wind-resistant temporary buttress for large-span bridge construction process | |
| CN213390842U (en) | Local bearing and supporting structure of steel truss | |
| CN217997838U (en) | Temporary support for assembling steel box bridge across river | |
| CN216973902U (en) | Full-assembly type insulation protection shed tunnel | |
| CN215561988U (en) | Auxiliary supporting system for construction of support hinge girder | |
| CN218265097U (en) | Shaped steel reinforced structure of concrete frame node | |
| CN109680798A (en) | A kind of parallel space truss of large span polygon variable cross-section and construction method | |
| CN214994696U (en) | Box truss cable connected node | |
| CN216604174U (en) | Suspension type center drive mud scraper working bridge | |
| CN217027122U (en) | Foundation ditch prestressing force string combination truss bearing structure | |
| CN220099621U (en) | Combined supporting structure of bailey beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |