CN113279779A - Pipe curtain supporting construction based on prestressing force steel strand wires and annular hasp are connected - Google Patents
Pipe curtain supporting construction based on prestressing force steel strand wires and annular hasp are connected Download PDFInfo
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- CN113279779A CN113279779A CN202110567143.0A CN202110567143A CN113279779A CN 113279779 A CN113279779 A CN 113279779A CN 202110567143 A CN202110567143 A CN 202110567143A CN 113279779 A CN113279779 A CN 113279779A
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- pipe
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- pipe curtain
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 106
- 239000010959 steel Substances 0.000 title claims abstract description 106
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 239000011376 self-consolidating concrete Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a pipe curtain supporting structure based on connection of a prestressed steel strand and an annular lock catch, wherein supporting parts of the pipe curtain supporting structure comprise lateral supporting parts arranged on two sides and a transverse supporting part connected with the upper ends of the lateral supporting parts, and round steel pipes are arranged at four top corners respectively; the supporting part is formed by connecting a plurality of rectangular steel pipes and a rectangular cavity, a pair of annular lock catches are respectively arranged on two sides of each rectangular steel pipe, and adjacent steel pipes are connected in a sealing mode through the annular lock catches to form the rectangular cavity; the prestressed steel strand penetrates through the supporting part, and two ends of the steel strand are fixed in the circular steel pipe through the fixing device; and filling concrete in the supporting part and the round steel pipe. The pipe curtain supporting structure provided by the invention has the advantages of high bearing capacity, high rigidity, simple and convenient pipe connection and easy operation, does not need to pour concrete among steel pipes, can effectively shorten the construction period, saves the economic cost, and can be used for providing a solution for the defects of weak stress at the joint of adjacent steel pipes of the traditional pipe curtain structure or complex connection of the traditional pipe curtain structure.
Description
Technical Field
The invention relates to a pipe curtain supporting structure based on connection of prestressed steel strands and annular lock catches, and belongs to the technical field of tunnel and underground engineering construction.
Background
The pipe curtain construction method is used for building channel engineering for passing through railways at the earliest in Japan, and the pipe curtain construction method is used for the first time in China in the building of underground channels of a certain city in hong Kong. The pipe curtain construction method has been developed and matured through years of domestic research and successful implementation in engineering. The traditional pipe curtain Construction Method has been researched and innovated by many scholars to derive various novel pipe curtain Construction methods, such as NIT Construction Method (New Italian piping Method), TRCM Construction Method (Tubular Roof Construction Method), NTR Construction Method (New Tunnel road of Method), STS Construction Method (Steel Tube Slab Method), etc. The pipe curtain construction method has certain engineering application value, but has some problems, such as poor steel bar binding operation condition in a steel pipe, more steel pipe cuts and welding seams and certain influence on waterproof quality due to the fact that the NIT construction method, the TRCM construction method and the NTR construction method need to be carried out. The reinforcing work of the STS construction method is very complicated and has certain difficulty in controlling the quality.
Disclosure of Invention
Aiming at the defects of the existing pipe curtain construction method in connection mode and field construction technology, the invention provides a pipe curtain supporting structure which is simple to operate and high in construction efficiency.
The technical scheme for realizing the aim of the invention is to provide a pipe curtain supporting structure based on the connection of a prestressed steel strand and an annular lock catch, which comprises a supporting part, a round steel pipe and a steel strand, wherein the supporting part is a lateral supporting part vertically arranged at two sides and a transverse supporting part horizontally arranged between the lateral supporting parts; the transverse supporting part and the lateral supporting part are respectively formed by connecting a plurality of rectangular steel pipes and rectangular cavities, a pair of annular lock catches are respectively arranged on two sides of each rectangular steel pipe, and adjacent steel pipes are hermetically connected through the annular lock catches to form the rectangular cavities; a plurality of pairs of prefabricated through holes are arranged on the pipe walls of two sides of the rectangular steel pipe in a segmented mode along the axial direction, the prestressed steel strands respectively penetrate through the lateral supporting portion and the transverse supporting portion through the through holes, and two ends of each steel strand are fixed in the circular steel pipe through fixing devices; and filling concrete in the supporting part and the round steel pipe.
In the technical scheme of the invention, the width of the rectangular cavity is the same as that of the rectangular steel pipe; the arrangement distance of the steel strands along the axial direction of the rectangular steel pipe is 0.5-1 m; the filled concrete is superfluid self-compacting concrete.
Compared with the technical scheme of the existing pipe curtain construction method, the invention has the beneficial effects that:
1. the bearing capacity and the rigidity of the integral pipe curtain structure are increased by applying prestress on the steel strands, and compared with the traditional lock catch and steel plate connection mode, the number of the notches and the welding lines in the steel pipe is greatly reduced.
2. The holes of the embedded steel strands can be prefabricated, operation in narrow and small space in the pipe is effectively avoided, and construction efficiency is improved.
3. Compared with a round steel pipe, the rectangular steel pipe is adopted in the middle, so that the contact area between the steel pipes can be effectively increased, inter-pipe grouting is not needed, and the construction process is simplified.
4. When the soil body below the pipe curtain is excavated, a large number of temporary supports do not need to be erected, the construction period is shortened, and the engineering cost is saved.
Drawings
Fig. 1 is a schematic view of a pipe curtain supporting structure based on connection of prestressed steel strands and annular latches according to an embodiment of the present invention;
FIG. 2 is a schematic view of the embodiment of the present invention used for the lap joint of the circular lock catches between the rectangular steel pipes;
FIG. 3 is a schematic structural diagram of a rectangular steel tube and an annular lock according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a fixing device for fixing a steel strand inside a circular steel roof according to an embodiment of the invention.
In the figure: 1. a circular steel pipe; 2. a rectangular steel pipe; 3. an annular lock catch; 4. steel strand wires; 6. a fixing device; 6. concrete; 7. a rectangular cavity.
Detailed Description
The technical scheme of the invention is further elaborated by combining the drawings and the embodiments.
Referring to the attached drawing 1, which is a schematic diagram of a pipe curtain supporting structure based on connection of a prestressed steel strand and an annular lock catch provided in this embodiment, the pipe curtain supporting structure mainly includes a supporting portion, a circular steel pipe and a steel strand, the supporting portion is a lateral supporting portion vertically arranged at two sides and a transverse supporting portion connected between the lateral supporting portions and horizontally arranged, the top and the bottom of the lateral supporting portion are respectively provided with the circular steel pipe 1, and the circular steel pipe arranged at the top of the lateral supporting portion is respectively connected with two ends of the transverse supporting portion; the transverse supporting part and the lateral supporting part are respectively formed by connecting a plurality of rectangular steel pipes 2 and rectangular cavities 7, a pair of annular latches 3 are respectively arranged on two sides of each rectangular steel pipe 2, and adjacent rectangular steel pipes are hermetically connected through the annular latches 3 to form the rectangular cavities 7; a plurality of pairs of through holes are axially and sectionally arranged on the pipe walls at two sides of the rectangular steel pipe, the prestressed steel strand 4 respectively penetrates through the lateral supporting part and the transverse supporting part through the through holes, and two ends of the steel strand are fixed in the round steel pipe by a fixing device 5; concrete 6 is filled in the rectangular steel pipe, the rectangular cavity and the round steel pipe of the supporting part. In this embodiment, the width of rectangular cavity is the same with the width of rectangular steel pipe, and the concrete of filling is superfluid self-compaction concrete. In general, the arrangement distance of the steel strands along the axial direction of the rectangular steel pipe is 0.5-1 m, and the specific distance range can be set according to actual engineering requirements; the prestress applied to the steel strand is not more than 0.7 times of the ultimate strength of the steel strand, and the specific numerical value is designed according to the actual engineering requirement.
Referring to FIG. 2, it is a schematic diagram of the present embodiment for the lap joint of the circular lock catches between the steel pipes; referring to fig. 3, it is a schematic structural diagram of the rectangular steel tube and the annular lock catch provided in this embodiment; as can be seen from fig. 2 and 3, a pair of matched annular latches 3 are respectively fixed on two sides of a rectangular steel pipe 2, adjacent steel pipes are hermetically connected through the annular latches 3 to form a rectangular cavity 7, and a transverse supporting part and a lateral supporting part are respectively formed by connecting a plurality of rectangular steel pipes 2 and the rectangular cavities 7; both ends of the transverse supporting part are connected with the round steel pipe 1.
Referring to fig. 4, it is a schematic structural diagram of the fixing device for fixing the steel strand inside the circular steel roof provided in this embodiment. The steel strands 4 respectively penetrating through the transverse supporting part and the lateral supporting part are fixed in the round steel pipe 1 by a fixing device 5.
By adopting the pipe curtain supporting structure based on the connection of the prestressed steel strands and the annular lock catches, the construction method comprises the following steps:
excavating a vertical shaft, constructing a construction platform, firstly constructing circular steel pipes at four corners of an excavation section, then jacking the circular steel pipes into rectangular steel pipes, and forming a rectangular cavity through sealing connection of annular lock catches to hermetically connect the rectangular steel pipes. After the rectangular steel pipe is jacked in, holes are reserved in the rectangular steel pipe, steel strands are embedded into the holes, and the two ends of the steel strands are fixed through a high-strength detachable fixing device. And after the steel strand is installed, tensioning the steel strand, and then pouring concrete in the rectangular steel pipe, the rectangular cavity and the circular steel pipe. And after the concrete reaches the design strength, excavating a soil body under the pipe curtain supporting structure, and pouring the bottom plate while excavating. And repeating the construction method to finish the tunnel excavation work section by section.
Claims (4)
1. The utility model provides a pipe curtain supporting construction based on prestressing force steel strand wires and annular hasp are connected which characterized in that: the steel wire rope comprises a supporting part, circular steel pipes and steel strands, wherein the supporting part is a lateral supporting part which is vertically arranged on two sides and a transverse supporting part which is horizontally arranged between the lateral supporting parts, the circular steel pipes are respectively arranged at the top and the bottom of the lateral supporting part, and the circular steel pipes arranged at the top of the lateral supporting part are respectively connected with two ends of the transverse supporting part; the transverse supporting part and the lateral supporting part are respectively formed by connecting a plurality of rectangular steel pipes and rectangular cavities, a pair of annular lock catches are respectively arranged on two sides of each rectangular steel pipe, and adjacent steel pipes are hermetically connected through the annular lock catches to form the rectangular cavities; a plurality of pairs of prefabricated through holes are arranged on the pipe walls of two sides of the rectangular steel pipe in a segmented mode along the axial direction, the prestressed steel strands respectively penetrate through the lateral supporting portion and the transverse supporting portion through the through holes, and two ends of each steel strand are fixed in the circular steel pipe through fixing devices; and filling concrete in the supporting part and the round steel pipe.
2. The pipe curtain supporting structure based on prestress wire and annular hasp are connected of claim 1, characterized in that: the width of the rectangular cavity is the same as that of the rectangular steel pipe.
3. The pipe curtain supporting structure based on prestress wire and annular hasp are connected of claim 1, characterized in that: the arrangement distance of the steel strands along the axial direction of the rectangular steel pipe is 0.5-1 m.
4. The pipe curtain supporting structure based on prestress wire and annular hasp are connected of claim 1, characterized in that: the filled concrete is superfluid self-compacting concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567143.0A CN113279779A (en) | 2021-05-24 | 2021-05-24 | Pipe curtain supporting construction based on prestressing force steel strand wires and annular hasp are connected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567143.0A CN113279779A (en) | 2021-05-24 | 2021-05-24 | Pipe curtain supporting construction based on prestressing force steel strand wires and annular hasp are connected |
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| Publication Number | Publication Date |
|---|---|
| CN113279779A true CN113279779A (en) | 2021-08-20 |
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| CN202110567143.0A Pending CN113279779A (en) | 2021-05-24 | 2021-05-24 | Pipe curtain supporting construction based on prestressing force steel strand wires and annular hasp are connected |
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| CN (1) | CN113279779A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080004434A (en) * | 2007-12-20 | 2008-01-09 | 유필수 | A constructing method of underground structure using steel pipe and segment |
| CN102628366A (en) * | 2012-04-10 | 2012-08-08 | 葛洲坝集团第五工程有限公司 | Annular prestressed stranded wire reeving trolley and reeving method |
| CN106939791A (en) * | 2017-03-08 | 2017-07-11 | 广东水电二局股份有限公司 | One kind can prestress steel structure concrete pipe sheet and its construction method |
| CN108049891A (en) * | 2017-12-08 | 2018-05-18 | 东北大学 | For building the rectangular steel pipe support system of underground engineering with shallow and its construction method |
| CN108951642A (en) * | 2018-08-17 | 2018-12-07 | 浙江大学城市学院 | The ruggedized construction and construction method of anti-pit accident on a kind of across existing tunnel |
| CN109555540A (en) * | 2017-09-27 | 2019-04-02 | 上海同吉建筑工程设计有限公司 | Tunnel form prestressed pipe curtain structure and construction method |
| CN110513122A (en) * | 2019-08-09 | 2019-11-29 | 上海市基础工程集团有限公司 | Prestressed girder support system and method for the construction of pipe curtain |
| CN211547686U (en) * | 2019-11-19 | 2020-09-22 | 辽宁省城乡市政工程集团有限责任公司 | Prestressed concrete-filled steel tube pipe curtain structure based on prefabricated concrete-filled steel tube connection |
-
2021
- 2021-05-24 CN CN202110567143.0A patent/CN113279779A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080004434A (en) * | 2007-12-20 | 2008-01-09 | 유필수 | A constructing method of underground structure using steel pipe and segment |
| CN102628366A (en) * | 2012-04-10 | 2012-08-08 | 葛洲坝集团第五工程有限公司 | Annular prestressed stranded wire reeving trolley and reeving method |
| CN106939791A (en) * | 2017-03-08 | 2017-07-11 | 广东水电二局股份有限公司 | One kind can prestress steel structure concrete pipe sheet and its construction method |
| CN109555540A (en) * | 2017-09-27 | 2019-04-02 | 上海同吉建筑工程设计有限公司 | Tunnel form prestressed pipe curtain structure and construction method |
| CN108049891A (en) * | 2017-12-08 | 2018-05-18 | 东北大学 | For building the rectangular steel pipe support system of underground engineering with shallow and its construction method |
| CN108951642A (en) * | 2018-08-17 | 2018-12-07 | 浙江大学城市学院 | The ruggedized construction and construction method of anti-pit accident on a kind of across existing tunnel |
| CN110513122A (en) * | 2019-08-09 | 2019-11-29 | 上海市基础工程集团有限公司 | Prestressed girder support system and method for the construction of pipe curtain |
| CN211547686U (en) * | 2019-11-19 | 2020-09-22 | 辽宁省城乡市政工程集团有限责任公司 | Prestressed concrete-filled steel tube pipe curtain structure based on prefabricated concrete-filled steel tube connection |
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