CN203755314U - Circular foundation pit splicing support structure - Google Patents
Circular foundation pit splicing support structure Download PDFInfo
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- CN203755314U CN203755314U CN201320735504.9U CN201320735504U CN203755314U CN 203755314 U CN203755314 U CN 203755314U CN 201320735504 U CN201320735504 U CN 201320735504U CN 203755314 U CN203755314 U CN 203755314U
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- 238000010276 construction Methods 0.000 claims abstract description 32
- 210000005069 ears Anatomy 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 38
- 239000010959 steel Substances 0.000 description 38
- 239000010410 layer Substances 0.000 description 16
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 241000269793 Cryothenia peninsulae Species 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a circular foundation pit splicing support structure, and belongs to the field of municipal construction equipment. The circular foundation pit splicing support structure comprises a plurality of annular connecting pieces, a telescopic connector and a plurality of support units, wherein the outer wall surface of each support unit is a rough surface; the support units are connected into a circular structural body of which the diameter can be adjusted by using the telescopic connector through the telescopic connector and the annular connecting pieces. According to the support structure, the support units, the telescopic connector and the annular connecting pieces form a device which is convenient to disassemble and assemble, can be used for keeping the structural stability and is suitable for supporting a small-sized foundation pit. The support structure has the advantages of no influence on the environment, quick construction and low cost.
Description
Technical Field
The utility model relates to an equipment is used in the municipal works construction, especially relates to a supporting construction is assembled to circular foundation ditch.
Background
At present, in municipal engineering construction, underground pipeline laying and repairing are important parts in urban municipal engineering, but no matter what underground pipeline construction mode is used, a large number of foundation pits and vertical working wells are required to be built. Taking the trenchless construction technique-pipe-pulling construction as an example, about 50 meters or so of work well needs to be installed on the underground pipeline. Most of the foundation pits or working wells belong to temporary structures, and backfilling is carried out after the pipeline construction is finished. The foundation pit of the type must comply with relevant specifications of the building foundation pit. The traditional construction method, such as steel sheet piles, underground continuous walls, open caisson and the like, has long construction period and high construction cost, and many materials cannot be recycled, especially concrete supporting structures cannot be completely removed after construction is completed, so that certain influence is caused on the surrounding environment, and meanwhile, great inconvenience is brought to municipal engineering construction in future. Therefore, research and development of a detachable and reusable foundation pit supporting structure not only has important engineering practical value, but also has positive significance for protecting the surrounding environment.
The existing foundation pit supporting structure has the advantages of accelerating the construction progress to a certain degree, reducing the cost, being capable of being recycled and the like. But has the following disadvantages: can not be closely attached to the side wall of the foundation pit, but can easily cause overlarge local displacement. The steel structure needs to be hoisted, so that construction risk factors are increased. The self gravity is large, and meanwhile, the excavation of the foundation pit cannot be guaranteed to be regular and circular, so that the assembly according to the radian and the size of the original structural design is difficult to guarantee in the construction, and the gap between two adjacent layers of supporting components is large. And in the process of disassembling the template, the structure is difficult to disassemble due to the action of soil pressure, and the foundation pit is easy to collapse.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a supporting construction is assembled to circular foundation ditch can reduce local deformation or ground settlement in the construction, and convenient dismantlement after the construction is removed to solve the great and dismantlement of local displacement and remove the problem of difficulty behind the current supporting construction of foundation ditch.
In order to solve the technical problem, the embodiment of the utility model provides a supporting construction is assembled to circular foundation ditch, include:
the device comprises a plurality of annular connecting pieces, telescopic connectors and a plurality of supporting unit bodies; wherein,
the outer wall surface of each supporting unit body is a rough surface;
the supporting unit bodies are connected into a circular ring-shaped structure body with the diameter size adjustable through the telescopic connectors and the annular connecting pieces.
The utility model has the advantages that: form a device suitable for small-size excavation supporting convenient to dismouting and that can guarantee that the structure is firm through a plurality of unit bodies, telescopic connector and a plurality of cyclic annular connecting piece of strutting, can make the unit body of strutting and the inner wall of the excavation close-fitting through the rough surface on telescopic connector and outer wall surface, increase the side friction resistance, have do not influence the environment, the construction is fast, advantage with low costs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a supporting structure provided in an embodiment of the present invention;
fig. 2 is a schematic view of a supporting unit of a supporting structure provided by an embodiment of the present invention;
fig. 3 is a top view of a supporting unit of a supporting structure provided by an embodiment of the present invention;
fig. 4 is a schematic view of a cushion block of a supporting structure provided in an embodiment of the present invention;
fig. 5 is a schematic view of a telescopic connector of a supporting structure according to an embodiment of the present invention;
FIG. 6 is a sectional view taken along line A-A in FIG. 5;
FIG. 7 is an enlarged view of a portion of FIG. 5 at B;
fig. 8 is a schematic view of an annular connector of a supporting structure according to an embodiment of the present invention;
fig. 9 is a side cross-sectional view of an annular connector of a support structure according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a supporting structure of another structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a supporting construction is assembled to circular foundation ditch, as shown in figure 1, this supporting construction includes: a plurality of supporting unit bodies 1, a telescopic connector 3 and a plurality of annular connecting pieces 2;
the outer wall surfaces 4 of the plurality of supporting unit bodies 1 are rough surfaces, so that the friction force between the supporting unit bodies and the inner wall of the foundation pit after the supporting unit bodies are attached tightly can be increased;
the supporting unit bodies 1 are connected into a circular ring-shaped structure body through the telescopic connectors 3 and the annular connecting pieces 2, the diameter size of the circular ring-shaped structure body can be adjusted through the telescopic connectors 3, and therefore the supporting structure can be attached to the inner wall of a foundation pit closely, and side friction resistance is increased.
Generally, six supporting unit bodies 1 are connected into a supporting structure with a small-opening circular ring-shaped structure through four annular connecting pieces 2, the opening parts are connected through telescopic connectors 3, the diameter of the formed circular ring-shaped structure can be finely adjusted by adjusting the length of the telescopic connectors 3, and therefore the formed supporting structure can be finely adjusted in a foundation pit and supports are attached to the inner wall of the foundation pit.
In the supporting structure, the structures of the supporting unit bodies 1 are the same, and as shown in fig. 2 and 3, each supporting unit body is composed of a rectangular arc plate 11 and an arc pipe 12 fixedly arranged in the middle of one side of the rectangular arc plate;
a plurality of cushion blocks 13 (the cushion block structure is shown in fig. 3) are arranged between the pipe body 12 and the rectangular arc-shaped plate 11, so that at least one of the two ends and the middle of the pipe body 12 is separated from the rectangular arc-shaped plate to form a gap, and bolt holes 14 are arranged at the two ends of the arc-shaped pipe 12; the annular connecting piece 2 can be conveniently sleeved at the end part of the arc-shaped pipe 12 through the gap, and then the annular connecting piece is matched and fixedly connected with the bolt through the bolt hole 14.
In the supporting structure, the bending degree of the rectangular arc plate 11 and the arc pipe 12 is 13.4%, the curvature radius is 2500mm, the length of the corresponding central angle of the common rectangular arc plate and the length of the arc pipe are 2500mm, and different lengths can be selected according to the diameter size of a supporting foundation pit.
In the above-described supporting structure, the telescopic connector 3 includes, as shown in fig. 4, 5, and 6: a connecting tube 33 and two connectors 31, 32; two ends of the connecting pipe 33 are both provided with internal threads, and one end of each of the two connectors 31 and 32 is movably connected to the two ends of the connecting pipe 33 through threads, so that the two connectors 31 and 32 can be adjusted to the connecting pipe 33, the length of the whole telescopic connector 3 is shortened, and the length of the telescopic connector is lengthened by reversely adjusting the two connectors 31 and 32;
a clamping part 34 is arranged in the middle of the connecting pipe 33, and the clamping part 34 can conveniently clamp the connecting pipe by a clamping tool when the connecting head is adjusted; the free end of each connector far away from the connecting pipe (namely the free end which is not connected with the connecting pipe) is provided with a through hole 311 for connecting the supporting unit body, and the supporting unit body can be conveniently connected with the through hole 311.
In the above-described supporting structure, the annular connecting member 2 is, as shown in fig. 7 and 8, composed of a connecting pipe member having connecting holes at both ends thereof and a connecting bolt (not shown) capable of being disposed in the connecting hole. The inner diameter of the end part of the connecting pipe fitting is larger than the outer diameters of the pipe bodies 12 and 13 at the joint of the connecting pipe fitting and the supporting unit body, so that the end parts of the pipe bodies 12 and 13 of the supporting unit body 1 can be conveniently sleeved with the connecting pipe fitting, and the annular connecting piece 2 can be conveniently connected with the supporting unit body 1.
The invention will be further explained with reference to the drawings and the specific embodiments.
Example one
The circular foundation pit assembling and supporting structure provided by the embodiment can solve the problems of high foundation pit supporting engineering cost, large displacement deformation and the like in municipal engineering. The circular foundation pit assembling and supporting structure is suitable for supporting a small-diameter circular foundation pit with the diameter of 5 meters or less than 5 meters, and can be disassembled for repeated use.
This supporting construction is assembled to circular foundation ditch is assembled by the supporting unit body and four hoop connecting pipes (being cyclic annular connecting piece), a telescopic connector of six steel construction and is assembled and constitute, six supporting unit bodies connect the back through four hoop connecting pipes, connect telescopic connector at last to adjust telescopic connector's size, make the supporting construction and the foundation ditch inner wall of the circular structure who forms closely paste, apply one simultaneously and offset the hoop stress of self gravity.
The structure of each part of the supporting structure is as follows:
(1) supporting the unit body:
the supporting unit body of the steel structure is formed by welding 1 steel pipe and rectangular steel sheets, as shown in fig. 2 and 3, wherein the steel sheets can be Q235 carbon structural steel plates, the arc length is 2500mm, the thickness is 4mm, and the height is 200 mm; the steel pipe can adopt a Q235 steel pipe, the arc length is 2500mm, the outer diameter is 50mm, and the wall thickness is 5 mm; the bending degree of the steel pipe and the steel sheet is 13.4 percent, the curvature radius of the steel pipe and the steel sheet is 2500mm, and the corresponding central angle is 60 degrees. It can be known that the supporting unit body can also be selected to be in proper size according to the actual requirement of the foundation pit to be supported,
the surface of the outer wall of the supporting unit body is a rough surface, so that the formed circular supporting structure has a rough outer surface and can increase the friction force with the inner wall of the foundation pit.
(2) The telescopic connector:
as shown in fig. 4, 5 and 6, after the supporting unit bodies with six steel structures are connected by the annular connecting piece, an opening gap of 208mm still remains, in order to enable the formed annular structure to be a complete circular structure capable of independently bearing external load, a telescopic connector capable of stretching is required to be installed at the gap of the steel structures, the telescopic connector is composed of a middle connecting pipe and connectors arranged at two ends, the connecting pipe is in threaded connection with the connectors, and the connectors can stretch on the connecting pipe, so that the length of the whole telescopic connector is adjusted. The formed whole circular ring-shaped structure supporting structure is connected into a complete and closed independent bearing structure through the telescopic connector.
The size of the telescopic connector thread is designed according to the national standard of the people's republic of china-part 1 of trapezoidal thread. The thread type was chosen as trapezoidal thread with nominal diameter of 50mm, thread pitch of 8mm, thread height of 4mm, thread crest and root width of 2.928mm, thread flank angle of 30 °, thread mark Tr50 × 8 (trapezoidal thread, diameter 50, thread pitch 8). Through checking calculation, the screw thread can keep self-locking under the action of static load (the State administration of quality supervision, inspection and quarantine of the people's republic of China, the State Committee for standardization and management of China, 2005).
(3) Annular connector (i.e. annular connection tube):
as shown in fig. 7 and 8, the connection mode of the circumferential connecting pipe and the supporting unit body of the supporting structure is a mode of connecting through a butt joint outer sleeve and fixing through a bolt, and displacement, in-plane rotation and torsion of a standard steel structure unit connection point can be restrained. The annular connecting pipes (which can adopt steel pipes) are connected with each other through a butt joint outer sleeve with the length of 500mm and a bolt. The outer diameter of the annular connecting pipe is 70mm, the wall thickness is 5mm, the curvature radius is 2500mm, and the corresponding central angle is 10 degrees; the bolt holes are 20mm by 14mm in size. The structure of the circumferential connecting pipe is shown in figure 4.
After strength checking, the specification of the bolt is determined to be M10, the nominal length is 100mm, the product performance grade is 8.8, and the product grade is a grade a hexagon head bolt, namely GB/T5782, M10 × 100 (national quality and technology administration, 2000).
Further, in the supporting structure, a plurality of circular ring-shaped structural bodies 101 are arranged in a layered and stacked manner and connected through a plurality of vertical connecting pieces 102 to form an integral circular ring-shaped structural body; specifically, the method comprises the following steps: the circular ring-shaped structures 101 are vertically stacked to form circular ring-shaped structures, and the vertical connecting pieces 102 are vertically connected (connected through hoops) between the circular ring-shaped structures at each layer (for example, the circular ring-shaped structures can be connected between supporting unit bodies at each layer).
The vertical connecting pieces in the supporting structure of the structure adopt vertical connecting steel pipes, and each layer of structure is connected by the vertical connecting steel pipes, so that the supporting structure has better overall stability; according to the actual installation condition, 6 vertical connecting steel pipes are uniformly installed on each layer of supporting structure, and all the structural layers are installed in a staggered mode. The vertical connecting steel pipe can adopt a steel pipe with the length of 600mm, the outer diameter of 50mm and the inner diameter of 40 mm.
The hoop for connecting the vertical connecting steel pipes can adopt a scaffold butt-joint fastener, the scaffold butt-joint fastener can adopt a butt-joint fastener capable of being used for steel pipes with the outer diameter of 50mm, and the mechanical property of the fastener can meet the relevant requirements of steel pipe scaffold fasteners (GB15831-2006) (the State administration of quality supervision, inspection and quarantine of the people's republic of China, the State Committee for standardization and management of China, 2006).
In the supporting unit body of the supporting structure, the steel cushion blocks arranged under the pipe body enable the pipe body and the rectangular arc-shaped plate to form a gap, vertical connecting steel pipes can be conveniently installed, scaffold fasteners can well grasp the annular supporting steel pipes, the installation flexibility of the vertical connecting steel pipes is improved by arranging the steel cushion blocks, and the rigidity of the whole structure is further enhanced.
The overall structure of the supporting structure is as follows: the round foundation pit assembling and supporting structure on each layer is formed by assembling supporting unit bodies of standard steel structures through annular connecting pieces and telescopic connectors. The method comprises the steps of firstly connecting standard steel structure units on the same layer into a single-layer structure capable of independently bearing external loads through an annular connecting piece, and then connecting the single-layer bearing structures into an integral structure through vertical connecting steel pipes, so that the integral structure has higher rigidity and better stability and can well resist the external loads. When the supporting structure of each layer is installed, firstly, 6 supporting unit bodies with standard steel structures are installed well through the annular connecting steel pipes; and then telescopic connectors are arranged in the residual gaps of 21cm, so that the whole layer structure is connected into a complete and closed independent bearing structure. The structures of all layers are connected into a whole through vertical connecting steel pipes, and every two adjacent layers of structures are connected through vertical connecting steel pipes through scaffold fasteners; according to the actual installation condition, 6 vertical connecting steel pipes are uniformly installed on each layer of structure, the structural layers are installed in a staggered mode, and the formed integral supporting structure is shown in a figure 10.
The utility model has the advantages as follows:
(1) through setting up telescopic connector, supporting construction and foundation ditch pithead are close to paste completely to make the structure form a confined circular, the atress of structure becomes more reasonable, and can provide a pre-compaction effect to the pithead, and the cooperation is strutted the rough surface of cell cube, the suppression pithead displacement of to a great extent. Meanwhile, due to the existence of the active pre-compression stress, the friction force between the supporting structure and the side wall is increased, the self gravity of the structure can be balanced, and a suspender is not needed to be used during installation.
(2) Each layer of supporting component forms an independent supporting system, the spacing distance between two adjacent layers can be adjusted on site according to engineering geological conditions, and the gap between the structures has adjustability.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a supporting construction is assembled to circular foundation ditch which characterized in that includes:
the device comprises a plurality of annular connecting pieces, telescopic connectors and a plurality of supporting unit bodies; wherein,
the outer wall surface of each supporting unit body is a rough surface;
the supporting unit bodies are connected into a circular ring-shaped structure body with the diameter size adjustable through the telescopic connectors and the annular connecting pieces.
2. The support structure of claim 1, wherein the telescopic connector comprises:
two connectors and a connecting pipe; wherein,
one end of each connector is movably connected to the internal threads at the two ends of the connecting pipe through threads;
the free end of each connector is provided with a through hole for connecting the supporting unit bodies, and the middle part of each connecting pipe is provided with a clamping part.
3. The supporting structure of claim 1, wherein each supporting unit body is composed of a rectangular arc-shaped plate and an arc-shaped pipe fixedly arranged at the middle part of one side of the rectangular arc-shaped plate;
and a plurality of cushion blocks are arranged between the pipe body and the rectangular arc-shaped plate, so that gaps are formed between at least one of the two ends and the middle of the pipe body and the rectangular arc-shaped plate in a separating way.
4. The support structure of claim 3, wherein the rectangular arc plate and the arc tube have a corresponding central angle of 60 °, a curvature of 13.4%, and a radius of curvature of 2500 mm.
5. A support structure as claimed in claim 3, wherein the length of the rectangular arc plates and arc tubes is 2500 mm.
6. A supporting construction as claimed in claim 3, 4 or 5, wherein bolt holes are provided at both ends of the arc tube.
7. A supporting structure as claimed in any one of claims 1 to 5, wherein the annular connecting member is constituted by a connecting pipe member provided with connecting holes at both ends and a connecting bolt capable of being disposed in the connecting holes.
8. The supporting structure of claim 7, wherein the inner diameter of the end of the connecting pipe is larger than the outer diameter of the pipe body at the connection with the supporting unit body.
9. The support structure of any one of claims 1 to 5, further comprising: a plurality of vertical connectors;
the formed circular ring-shaped structural bodies are arranged in a layered and overlapped mode, and the vertical connecting pieces are vertically connected among the circular ring-shaped structural bodies of all layers to form the whole circular ring-shaped structural body.
10. The support structure of claim 9, wherein the vertical connectors are vertically connected between each layer of the ring structures by anchor ears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735504.9U CN203755314U (en) | 2013-11-19 | 2013-11-19 | Circular foundation pit splicing support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735504.9U CN203755314U (en) | 2013-11-19 | 2013-11-19 | Circular foundation pit splicing support structure |
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| Publication Number | Publication Date |
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| CN203755314U true CN203755314U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320735504.9U Expired - Lifetime CN203755314U (en) | 2013-11-19 | 2013-11-19 | Circular foundation pit splicing support structure |
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| CN (1) | CN203755314U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532856A (en) * | 2015-01-05 | 2015-04-22 | 广西瑞宇建筑科技有限公司 | Fabricated lattice unit for foundation pit supporting and installation method |
| CN109778875A (en) * | 2019-03-06 | 2019-05-21 | 戴向胜 | The combination Circular Steel Support structure of axle power command displacement |
| CN109898516A (en) * | 2019-02-28 | 2019-06-18 | 温州国宁建设有限公司 | A kind of deep foundation pit supporting structure |
-
2013
- 2013-11-19 CN CN201320735504.9U patent/CN203755314U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532856A (en) * | 2015-01-05 | 2015-04-22 | 广西瑞宇建筑科技有限公司 | Fabricated lattice unit for foundation pit supporting and installation method |
| CN109898516A (en) * | 2019-02-28 | 2019-06-18 | 温州国宁建设有限公司 | A kind of deep foundation pit supporting structure |
| CN109898516B (en) * | 2019-02-28 | 2021-01-05 | 温州国宁建设有限公司 | Deep foundation pit supporting structure |
| CN109778875A (en) * | 2019-03-06 | 2019-05-21 | 戴向胜 | The combination Circular Steel Support structure of axle power command displacement |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180717 Address after: 100083, No. 16, No. 16, Beijing, Zhi Xin Village, 304 Patentee after: BEIJING ZHONGDI SHIELD ENGINEERING TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: 100083 No. 29, Haidian District, Beijing, Xueyuan Road Patentee before: China University of Geosciences (Beijing) |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |