CN113802568A - Mould bag concrete-steel plate combined node for connecting steel pipe inner support and foundation pit support structure - Google Patents
Mould bag concrete-steel plate combined node for connecting steel pipe inner support and foundation pit support structure Download PDFInfo
- Publication number
- CN113802568A CN113802568A CN202111001939.6A CN202111001939A CN113802568A CN 113802568 A CN113802568 A CN 113802568A CN 202111001939 A CN202111001939 A CN 202111001939A CN 113802568 A CN113802568 A CN 113802568A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- steel
- concrete
- mould bag
- plate
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 157
- 239000010959 steel Substances 0.000 title claims abstract description 157
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003313 weakening effect Effects 0.000 abstract description 4
- 239000004568 cement Substances 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 3
- 239000011378 shotcrete Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention discloses a mould bag concrete-steel plate combined node for connecting a steel pipe inner support and a foundation pit support structure. And pouring and fixing the steel plate during the construction of the enclosure structure ground wall or row pile. The steel plate plays a role of supporting the tray. The mould bag is used for pressure pouring concrete so that the mould bag can fill gaps of the nodes. The steel plate and the steel pipe inner support end face are tightly propped. The length of the twisted steel connecting steel plate is adjusted according to the field requirement. After the concrete is poured under pressure, the concrete has certain fluidity, the internal gaps of the nodes can be well filled, the local weakening influence of eccentricity on the nodes is eliminated, the mold bag is a water-permeable and air-permeable material, the water cement ratio is continuously reduced through water drainage in the concrete condensation process, the later strength is increased, and the bearing capacity is improved.
Description
Technical Field
The invention relates to a mould bag concrete-steel plate combined node for connecting a steel pipe inner support and a foundation pit support structure, and belongs to the technical field of foundation pit engineering.
Background
The subway station foundation pit is generally a narrow and long foundation pit with small width and large depth, and an inner support supporting mode is usually adopted for the foundation pit. For a steel support supporting system, one end of a node is connected with the enclosure structure, the other end of the node is connected with the steel support, and the connection mode of the node is an important factor for determining the full play of the bearing capacity of the steel support. The common node form in engineering at present is steel wedge type loose end, and this kind of loose end exists the construction complicacy, heavy, shortcomings such as the installation is dismantled trouble, and when using, need use connecting bolt to be connected loose end and steel shotcrete, node gap position generally with steel wedge packing, cause the steel shotcrete when tight forward top, stress concentration or the eccentric condition appears easily, the weakening node, lead to the reduction of steel shotcrete system bearing capacity, be unfavorable for the safety and stability of foundation ditch engineering.
Disclosure of Invention
The invention aims to provide a mould bag concrete-steel plate combined node for connecting a steel pipe inner support and a foundation pit support structure, which has the advantages of simple installation and disassembly, capability of solving the adverse effect on the steel support caused by the eccentricity phenomenon, capability of being of a structure capable of being stressed and pulled, and suitability for the first steel support capable of bearing tensile force.
The technical scheme of the invention is as follows:
a mould bag concrete-steel plate combined node for connecting a steel pipe inner support and a foundation pit support structure is characterized in that: the main body comprises a steel plate 1, a steel plate 2, a steel plate 3, mould bag concrete, a coarse thread steel bar, a ribbed plate and the like. The steel plate 1 is an embedded steel plate, and the embedded steel plate is poured and fixed at a corresponding position after each steel support arrangement point is determined during the construction of the enclosure structure ground connection wall or the row pile; the steel plate 3 is a bottom tray component and is welded on the embedded steel plate; the steel plate 2 is connected with the steel plate 1 through a coarse thread steel bar, and the distance between the two steel plates can be adjusted; the mould bag is clamped between the steel plate 1 and the steel plate 2 and is placed on the steel plate 3, the top of the mould bag is provided with a grouting opening, and the grouting opening consists of a screw joint, a gasket and a nut; the bottom of the steel plate 3 is welded with a rib plate; the steel pipe inner support is erected on the steel plate 3, is tightly propped against the steel plate 2 in a contact manner, and is connected through a bolt.
A mould bag concrete-steel plate combined node for connecting a steel pipe inner support and a foundation pit support structure comprises a steel plate, mould bag concrete 4, a rib plate 5 and a coarse thread steel bar 6; the first steel plate 1 is an embedded steel plate and is poured at a preset steel support arrangement position during the construction of the enclosure structure; a plurality of threaded holes are formed in the surface of the second steel plate 2 along the circumferential direction, one end of a coarse-thread steel bar 6 is welded with the first steel plate 1, and the other end of the coarse-thread steel bar penetrates through the threaded holes in the surface of the second steel plate 2 and is connected with the threaded holes through high-strength bolts 7; the steel plate 3 is a supporting tray component and is welded on the first steel plate 1; the die bag 4 is placed between the first steel plate 1 and the second steel plate 2, and the thickness required by the die bag 4 can be adjusted through the coarse thread steel bars 6; the rib plate 5 is welded on the first steel plate 1; the inner support frame of the steel pipe is arranged on the surface of the third steel plate 3 and is connected and fixed through a flange plate at the end part of the steel support and a threaded hole 8 of the third steel plate by a bolt.
1. The mould bag concrete-steel plate combined node as claimed in claim 1, wherein a distance of 1-2 cm is left between the bottom of the second steel plate 2 and the third steel plate 3, so that the distance between the second steel plate 2 and the steel plate 11 can be adjusted through the thick thread steel bar 6.
2. The mould bag concrete-steel plate combined node as claimed in claim 1, wherein the material of the mould bag concrete 4 is non-woven fabric with water permeability, and the top of the mould bag concrete is provided with a grouting opening 9 which is composed of a screwed joint 10, a gasket 11 and a nut 12.
3. The mould bag concrete-steel plate combination node of claim 1, wherein the threaded holes 8 are aligned with flange bolt holes on the steel support end face.
Compared with the prior art, the invention has the following advantages and outstanding effects:
1, when the concrete is poured into the mould bag under pressure, the concrete has fluidity and plays a role of filling a gap between the steel plates 1 and 2, the phenomenon that the eccentric action gives local weakening and display to a node is eliminated, and the bearing capacity of a steel support system is improved; the length of the 2 node can be adjusted through the thick thread steel bar, and the allocation of different steel support short-circuit sections can be met according to the on-site construction requirement; 3 the connecting member is a thick thread steel bar which can bear pressure and can also be pulled, so that the whole system of the steel support can be both pressed and pulled, and the problem that the first steel support cannot be pulled in the foundation pit engineering is solved.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a mould bag concrete-steel plate combined node.
Fig. 2 is a front view of a mould bag concrete-steel plate combination node.
Fig. 3 is a side view of a moulded bag concrete-steel plate composite node.
Fig. 4 is a schematic view of a mold bag concrete-steel plate combined node mold bag.
Fig. 5 is a detailed view of a mold bag grouting opening of the mold bag concrete-steel plate combined node.
In the figure: 1-embedding a steel plate in a steel plate 1; 2-steel plate 2; 3-steel plate 3 tray; 4-molding bag concrete; 5-a rib plate; 6-coarse thread reinforcing steel bar; 7-high strength bolts; 8-a threaded hole; 9-grouting port; 10-pair of wire joints; 11-a washer; 12-nut.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention relates to a mould bag concrete-steel plate combined node for connecting a steel pipe inner support and a foundation pit support structure, which is a node connecting system with simple structure and convenient implementation, and not only can well solve the problem of local rigidity weakening of the node caused by an eccentric action on a steel support system, but also is a structure which can be stressed and pulled. As shown in the figure, the major structure includes the pre-buried steel sheet of steel sheet 1, members such as steel sheet 2, 3 trays of steel sheet, mould bag concrete, floor, coarse thread reinforcing bar. The steel plate 1 is an embedded component and is welded at the position of a wall or a pile arranging reinforcement cage of the enclosure structure, the steel plate 2 is an end plate and is abutted against a steel support, the steel plate 3 is a tray component and bears the mould bag concrete and the gravity of the steel support together with a rib plate, and a grouting opening is formed in the top of the mould bag and is connected with a pressure grouting pump at a construction site to perform concrete grouting work.
The construction method comprises the following steps:
the steel plates 1, 2 and 3 and the rib plates are pre-processed in a factory according to the size requirement, wherein the surface of the steel plate 2 is required to be provided with a plurality of threaded holes for connecting the coarse thread steel bars and the flange plates at the end parts of the steel supports. The mould bag material selects non-woven fabrics with good water permeability and air permeability, is sewn into a cylinder shape, is cut out into circular holes with the size of a grouting opening on the side surface, and is provided with a screw joint, a gasket and a nut. The material is conveyed to a construction site, the steel plate 3 is welded on the steel plate 1, the rib plate is welded on the steel plate 1 at the bottom of the steel plate 3, one end of the coarse thread steel bar is welded with the steel plate 1, the other end of the coarse thread steel bar is connected with the steel plate 2 through a high-strength bolt, a mold bag is placed between the two steel plates 1 and 2, a steel support is erected, and finally concrete grouting work is performed.
Claims (4)
1. A mould bag concrete-steel plate combined node for connecting a steel pipe inner support and a foundation pit support structure is characterized in that: comprises a steel plate, a mould bag concrete (4), a ribbed plate (5) and a coarse thread steel bar (6); the first steel plate (1) is an embedded steel plate and is poured at a preset steel support arrangement position during the construction of the enclosure structure; a plurality of threaded holes are formed in the surface of the second steel plate (2) along the circumferential direction, one end of the coarse-thread steel bar (6) is welded with the first steel plate (1), and the other end of the coarse-thread steel bar penetrates through the threaded holes in the surface of the second steel plate (2) and is connected with the threaded holes through high-strength bolts (7); the steel plate (3) is a supporting tray component and is welded on the first steel plate (1); the die bag (4) is placed between the first steel plate (1) and the second steel plate (2), and the required thickness of the die bag (4) can be adjusted through the coarse thread steel bar (6); the rib plate (5) is welded on the first steel plate (1); the steel pipe inner support is erected on the surface of the third steel plate (3) and is connected and fixed through a flange plate at the end part of the steel support and a threaded hole (8) of the third steel plate through a bolt.
2. The mould bag concrete-steel plate combined node for connecting the steel pipe inner support and the foundation pit support structure is characterized in that a distance of 1-2 cm is reserved between the bottom of the second steel plate (2) and the third steel plate (3), so that the distance between the second steel plate (2) and the steel plates 1(1) can be adjusted through the thick thread steel bars (6).
3. The mould bag concrete-steel plate combined node for connecting the inner support of the steel pipe with the foundation pit support structure according to claim 1, wherein the mould bag concrete (4) is made of a water-permeable non-woven fabric, a grouting opening (9) is required to be formed in the top of the mould bag concrete, and the mould bag concrete-steel plate combined node comprises a wire-aligning joint (10), a gasket (11) and a nut (12).
4. The formwork concrete-steel plate combination node for connecting the steel pipe inner support and the foundation pit support structure according to claim 1, wherein the threaded hole (8) is required to be aligned with a flange bolt hole on the end face of the steel support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111001939.6A CN113802568A (en) | 2021-08-30 | 2021-08-30 | Mould bag concrete-steel plate combined node for connecting steel pipe inner support and foundation pit support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111001939.6A CN113802568A (en) | 2021-08-30 | 2021-08-30 | Mould bag concrete-steel plate combined node for connecting steel pipe inner support and foundation pit support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113802568A true CN113802568A (en) | 2021-12-17 |
Family
ID=78894354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111001939.6A Pending CN113802568A (en) | 2021-08-30 | 2021-08-30 | Mould bag concrete-steel plate combined node for connecting steel pipe inner support and foundation pit support structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113802568A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324076A (en) * | 2022-09-13 | 2022-11-11 | 北京工业大学 | Support end structure in assembled combination steel pipe concrete interior |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0813494A (en) * | 1994-06-29 | 1996-01-16 | Maeda Corp | Fixing method of earth retaining wall and timbering |
| KR20020007521A (en) * | 2000-07-14 | 2002-01-29 | 조재형 | method for underground construction of building by using permanent structural member as strut for support retaining wall |
| KR20090039949A (en) * | 2007-10-19 | 2009-04-23 | (주)핸스건설 | Construction method for steel pipe support |
| CN206280102U (en) * | 2016-12-09 | 2017-06-27 | 李柱和 | A kind of colliery anchor beam armored concrete fills mould bag |
| CN109736328A (en) * | 2019-01-30 | 2019-05-10 | 腾达建设集团股份有限公司 | A kind of application method of novel segmented head and novel segmented head |
| CN110359466A (en) * | 2019-07-08 | 2019-10-22 | 中国建筑第八工程局有限公司 | Mechanical self-latching type hydraulic servo end construction and its construction method |
| CN212001157U (en) * | 2020-04-14 | 2020-11-24 | 中铁第一勘察设计院集团有限公司 | Prefabricated subway deep basal pit inner support system of assembling |
| CN213836667U (en) * | 2020-09-23 | 2021-07-30 | 中铁第四勘察设计院集团有限公司 | Foundation pit engineering precast concrete non-primary support system |
-
2021
- 2021-08-30 CN CN202111001939.6A patent/CN113802568A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0813494A (en) * | 1994-06-29 | 1996-01-16 | Maeda Corp | Fixing method of earth retaining wall and timbering |
| KR20020007521A (en) * | 2000-07-14 | 2002-01-29 | 조재형 | method for underground construction of building by using permanent structural member as strut for support retaining wall |
| KR20090039949A (en) * | 2007-10-19 | 2009-04-23 | (주)핸스건설 | Construction method for steel pipe support |
| CN206280102U (en) * | 2016-12-09 | 2017-06-27 | 李柱和 | A kind of colliery anchor beam armored concrete fills mould bag |
| CN109736328A (en) * | 2019-01-30 | 2019-05-10 | 腾达建设集团股份有限公司 | A kind of application method of novel segmented head and novel segmented head |
| CN110359466A (en) * | 2019-07-08 | 2019-10-22 | 中国建筑第八工程局有限公司 | Mechanical self-latching type hydraulic servo end construction and its construction method |
| CN212001157U (en) * | 2020-04-14 | 2020-11-24 | 中铁第一勘察设计院集团有限公司 | Prefabricated subway deep basal pit inner support system of assembling |
| CN213836667U (en) * | 2020-09-23 | 2021-07-30 | 中铁第四勘察设计院集团有限公司 | Foundation pit engineering precast concrete non-primary support system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324076A (en) * | 2022-09-13 | 2022-11-11 | 北京工业大学 | Support end structure in assembled combination steel pipe concrete interior |
| CN115324076B (en) * | 2022-09-13 | 2023-08-08 | 北京工业大学 | Assembly type combined steel pipe concrete inner support fixing and supporting end structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105569224B (en) | Concrete filled steel tube edge constraint overlaps monoblock type shear wall and preparation and installation method | |
| CN108374489B (en) | Assembled concrete column foot joint structure and construction method thereof | |
| CN108951840B (en) | Method for constructing arc-shaped outer wall of basement based on single-side formwork support of shaped support | |
| CN113802568A (en) | Mould bag concrete-steel plate combined node for connecting steel pipe inner support and foundation pit support structure | |
| CN106677162B (en) | A kind of stiffness composite precast slab stake building enclosure | |
| CN113697640A (en) | Finished hoistway of integrally assembled elevator added in existing multi-story building and construction method | |
| CN210737843U (en) | Prefabricated assembled concrete shear force wall | |
| CN104762967A (en) | Improved anchor rod static pressure pile sealing device and construction method | |
| CN211143050U (en) | Grouting type underground continuous wall of prefabricated column and wall plate | |
| CN217175201U (en) | Assembled concrete column connected node | |
| CN113802569A (en) | Steel sleeve node for connecting inner support-enclosure structure of steel pipe | |
| CN212452765U (en) | Two-in-one underground pipe gallery structure | |
| CN112359888B (en) | Static pile reaction frame jacking system for carbon filter tank body deviation rectifying and reinforcing construction and construction method | |
| CN212129915U (en) | Infilled wall tie beam pouring mold | |
| CN210315651U (en) | Upward inclined concrete wall formwork supporting and reinforcing structure | |
| CN108951643B (en) | Super high-rise deep foundation pit basement core tube large-span large-area support changing construction method | |
| CN206467649U (en) | A kind of stiffness composite precast slab stake building enclosure | |
| CN216142027U (en) | High-performance concrete prefabricated guide wall structure | |
| CN220768081U (en) | Combined inclined pile support foundation pit supporting structure | |
| CN218933147U (en) | Fixed end structure based on foundation pit steel support | |
| CN219586988U (en) | Prefabricated shear wall of lateral reinforcement grouting sleeve | |
| CN215802677U (en) | Non-embedded type section steel column foot structure | |
| CN208455639U (en) | Deep Foundation Pit of Metro Stations combined type supporting construction | |
| CN114439061B (en) | Reinforced structure of pile foundation of filling pile and construction method thereof | |
| CN112814004B (en) | Construction method of underground frame foundation connection structure |
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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Caixia Inventor after: Liu Wenjie Inventor after: Li Pengfei Inventor after: Zhang Mingju Inventor before: Zhang Mingju Inventor before: Liu Wenjie Inventor before: Li Pengfei Inventor before: Guo Caixia |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211217 |
|
| RJ01 | Rejection of invention patent application after publication |