CN205422752U - Interior top longeron of pilot tunnel serves as a contrast synchronous construction structures with hogging no. 2 in secretly digging station median septum method - Google Patents
Interior top longeron of pilot tunnel serves as a contrast synchronous construction structures with hogging no. 2 in secretly digging station median septum method Download PDFInfo
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- CN205422752U CN205422752U CN201520951024.5U CN201520951024U CN205422752U CN 205422752 U CN205422752 U CN 205422752U CN 201520951024 U CN201520951024 U CN 201520951024U CN 205422752 U CN205422752 U CN 205422752U
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Abstract
Interior top longeron of pilot tunnel serves as a contrast synchronous construction structures with hogging no. 2 in secretly digging station median septum method, the pilot tunnel adopts median septum method excavation in the middle of the station, and the construction of the little pilot tunnel ingate of construction shaft transverse passage -way and station is being undertaken to the construction shaft four sides wall of a well, must successively abolish, and for ensureing shaft wall of a well stable in structure, pilot tunnel C district's soil body and slip casting are consolidated in the middle of reserving, and reserved part shaft wall is not abolished, treats to abolish after station top longeron link up again, simultaneously for an eccentric pressurized of longeron construction centering pilot tunnel hunch portion, adopt two linings of top longeron and hogging to detain the safety measure who encircles synchronous construction, this structure effective control the earth's surface subside, the operation space has increased, improved the efficiency of construction, reduced the twice construction joint between top longeron and the hogging moreover, favourable station main part structural waterproof effect.
Description
Technical field
In this utility model relates to Station median septum method middle drift, top longeron serves as a contrast synchronous construction structure with hogging two, belongs to urban rail transit technology field.
Background technology
The construction of subway PBA engineering method Station often uses little pilot tunnel method to excavate, general upper strata use four little pilot drives to be unfavorable for surface settlement control, construction top longeron and hogging two lining button arch time space are narrow and small, be not easy to construction, and main structure construction seam is more, is unfavorable for station integral waterproofing effect.In the middle of using, two pilot tunnels merge into median septum method excavation, can effectively control ground settlement, top longeron and hogging two serve as a contrast operation and can synchronize to lead in-cavity construction at CD simultaneously, increase working space, improve efficiency of construction, and decrease the twice construction joint between top longeron and hogging, favourable station agent structure waterproof effect.
Summary of the invention
On the basis of subway PBA engineering method Station construction technology, excavate by taking middle two pilot tunnels to merge into median septum method, top longeron and hogging two serve as a contrast the mode that operation is constructed simultaneously, increase working space, improve efficiency of construction, decreasing the construction joint between top longeron and hogging, define top longeron and hogging two lining button arch synchronous construction structure in subway PBA engineering method Station median septum method middle drift, in construction, monitoring measurement indices all meets the requirements.
The technical solution adopted in the utility model is that Station median septum method middle drift interior top longeron serves as a contrast synchronous construction structure with hogging two, and this structure includes that station median septum method excavation middle drift 1, station hogging two lining detain arch 2, top longeron 3, median septum method pilot tunnel median septum 4, limit, station pilot tunnel 5, bottom girder 6, the C district soil body 7, steel pipe column 8, construction shaft and transverse passage-way 9.
The preliminary bracing structure that station median septum method excavation middle drift 1 excavates for station, this structure uses benching tunnelling method excavation to shape, and the digging distance of adjacent station median septum method excavation middle drift 1 is interlaced；Station hogging two lining button arch 2 is arch, station agent structure and the inner side being arranged on station median septum method excavation middle drift 1；Top longeron 3 pours for station body top structure and with station hogging two lining button arch 2 simultaneously, median septum method pilot tunnel median septum 4 is arranged on the centre of station median septum method excavation middle drift 1 and constitutes the temporary structure of station preliminary bracing, when station hogging two lining button arch 2 and top longeron 3 are constructed, median septum method pilot tunnel median septum 4 is removed in segmentation；Limit, station pilot tunnel 5 is arranged on the both sides of station median septum method excavation middle drift 1, and it is station preliminary bracing structure；Bottom girder 6 is arranged on the bottom of station agent structure, the C district soil body 7 uses pre-grouting to carry out reinforcing and be arranged at construction shaft borehole wall temporary support, owing to four boreholes wall of construction shaft are both needed to successively abolish, the C district soil body 7 is station middle drift temperature pier structure, removes after top longeron 3 has been constructed；Steel pipe column 8 is station main body supporting structure, and steel pipe column 8 bottom connects bottom girder 6, and top connects top longeron 3；Construction shaft and transverse passage-way 9 are arranged on the middle position of station median septum method excavation middle drift 1, as construction transport channel.
In Station median septum method middle drift, top longeron serves as a contrast synchronous construction structure with hogging two, in the middle of station, pilot tunnel uses median septum method excavation, the construction shaft four sides borehole wall carries construction shaft transverse passage-way and station little pilot tunnel horse-head ingate, must successively abolish, for guaranteeing shaft wall Stability Analysis of Structures, pilot tunnel C district's soil body grouting and reinforcing in the middle of reserved, reserved part hoistway wall is not abolished, and abolishes after top, station longeron is through again；In order to push up longeron construction, middle drift arch eccentric compression, employing top longeron and hogging two lining button are encircleed the safety measure of synchronous construction simultaneously, specific as follows:
1, in the middle of station during pilot tunnel median septum method construction ingate, the reserved C district soil body grouting and reinforcing, C district soil body extent length 3500mm, as shown in Figure 2.Reserved part hoistway wall is not abolished, and abolishes after top, station longeron is through again.
2, after bottom girder of having constructed, steel pipe column, use top longeron and middle top longeron and hogging two lining button arch synchronous construction, in work progress it is noted that the middle interim median septum of pilot tunnel to abolish length unsuitable long, this engineering top longeron and hogging two are lined with every 6m and abolish a length of 8m as line production section, interim median septum.
Utility model, has the advantage that
1, use median septum method to excavate little pilot tunnel and can effectively control ground settlement.
2, the twice construction joint between top longeron and hogging, beneficially station agent structure waterproof effect are decreased.
3, increase working space, improve efficiency of construction.
4, entirety is advanced by the construction period of 25%.
5, the construction cost of about 10% is reduced.
Accompanying drawing explanation
Fig. 1 station structure profile.
Fig. 2 station structure plane graph.
In figure: 1, station median septum method excavation pilot tunnel, 2, station hogging two lining button arch, 3, top longeron, 4, median septum method pilot tunnel median septum, 5, the little pilot tunnel in station, 6, bottom girder, 7, the C district soil body, 8, steel pipe column, 9, construction shaft and transverse passage-way.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings:
As it is shown in figure 1, top longeron serves as a contrast synchronous construction technique with hogging two in this utility model Station median septum method middle drift, station middle drift uses median septum method excavation, pilot tunnel physical dimension 9600 × 5700mm.Owing to the construction shaft surrounding borehole wall is successively abolished, for guaranteeing that shaft wall supporting is stable, the reserved C district soil body grouting and reinforcing, reserved part hoistway wall is not abolished, and abolishes after top, station longeron is through again.C district soil body extent length 3500mm, has performed bottom girder, steel pipe column, in median septum method middle drift top longeron with in across button arch synchronous construction.
Specific construction flow process step sequence is:
The first step: median septum method excavation middle drift
Median septum method excavation middle drift, pilot tunnel physical dimension 9600 × 5700mm.Owing to the construction shaft surrounding borehole wall is successively abolished, for guaranteeing that shaft wall supporting is stable, the reserved C district soil body grouting and reinforcing, reserved part hoistway wall is not abolished, and abolishes after top, station longeron is through again.C district soil body extent length 3500mm, as shown in Figure 2.
Second step: construction bottom girder and steel pipe column
Routine performs bottom girder and steel pipe column.
3rd step: top longeron serves as a contrast synchronous construction with hogging two
Abolishing median septum method pilot tunnel median septum, synchronous construction two top longeron serves as a contrast with hogging two, pushes up longeron and hogging two serves as a contrast waterproof, reinforcing bar, template, concrete and constructs simultaneously.
4th step: the settlement monitoring in work progress
Settlement observation point should be arranged in advance before construction AT STATION, periodically sedimentation should be monitored during follow-up boring construction, it is ensured that the verity of settling data and promptness, and combine settlement monitoring data reasonable arrangement site operation progress.
Above this utility model Station little pilot tunnel median septum method construction technology, for the exemplary embodiments of PBA tunneling subway station, enforcement of the present utility model is not limited to this.Station little pilot tunnel median septum method construction can effectively control ground settlement, increase working space, improve efficiency of construction, beneficially station agent structure waterproof effect, therefore, this little pilot tunnel median septum method construction method has special meaning to following hidden digging structure construction.
Claims (1)
1. in Station median septum method middle drift, top longeron serves as a contrast synchronous construction structure with hogging two, it is characterised in that: this structure includes station median septum method excavation middle drift (1), station hogging two lining button arch (2), top longeron (3), median septum method pilot tunnel median septum (4), limit, station pilot tunnel (5), bottom girder (6), the C district soil body (7), steel pipe column (8), construction shaft and transverse passage-way (9)；
Station median septum method excavation middle drift (1) is the preliminary bracing structure of station excavation, and this structure uses benching tunnelling method excavation to shape, and the digging distance of adjacent station median septum method excavation middle drift (1) is interlaced；Station hogging two lining button arch (2) is arch, station agent structure and the inner side being arranged on station median septum method excavation middle drift (1)；Top longeron (3) is station body top structure and pours with station hogging two lining button arch (2) simultaneously, median septum method pilot tunnel median septum (4) is arranged on the centre at station median septum method excavation middle drift (1) and constitutes the temporary structure of station preliminary bracing, when station hogging two lining button arch (2) and top longeron (3) construction, median septum method pilot tunnel median septum (4) is removed in segmentation；Limit, station pilot tunnel (5) is arranged on the both sides at station median septum method excavation middle drift (1), and it is station preliminary bracing structure；Bottom girder (6) is arranged on the bottom of station agent structure, the C district soil body (7) uses pre-grouting to carry out reinforcing and be arranged at construction shaft borehole wall temporary support, owing to four boreholes wall of construction shaft are both needed to successively abolish, the C district soil body (7) is station middle drift temperature pier structure, removes after having constructed in top longeron (3)；Steel pipe column (8) is station main body supporting structure, and steel pipe column (8) bottom connects bottom girder (6), and top connects top longeron (3)；Construction shaft and transverse passage-way (9) are arranged on the middle position at station median septum method excavation middle drift (1), as construction transport channel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520951024.5U CN205422752U (en) | 2015-11-25 | 2015-11-25 | Interior top longeron of pilot tunnel serves as a contrast synchronous construction structures with hogging no. 2 in secretly digging station median septum method |
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| CN201520951024.5U CN205422752U (en) | 2015-11-25 | 2015-11-25 | Interior top longeron of pilot tunnel serves as a contrast synchronous construction structures with hogging no. 2 in secretly digging station median septum method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005664A (en) * | 2018-02-02 | 2018-05-08 | 北京市政建设集团有限责任公司 | A kind of hole pile construction method of platform structure |
| CN108222981A (en) * | 2017-12-29 | 2018-06-29 | 中车建设工程有限公司 | Bright excavation construction method after underground station is first dark |
| CN108331587A (en) * | 2018-03-05 | 2018-07-27 | 北京市政建设集团有限责任公司 | A kind of transverse passage-way ingate abolishes construction and restructuring bankrupt |
| CN112065466A (en) * | 2020-09-23 | 2020-12-11 | 中铁工程装备集团有限公司 | Multilayer underground engineering supporting structure and construction method thereof |
| CN114320376A (en) * | 2022-03-17 | 2022-04-12 | 中国铁路设计集团有限公司 | Supporting structure for underground excavation station to enter main tunnel from cross channel and construction method |
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2015
- 2015-11-25 CN CN201520951024.5U patent/CN205422752U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222981A (en) * | 2017-12-29 | 2018-06-29 | 中车建设工程有限公司 | Bright excavation construction method after underground station is first dark |
| CN108005664A (en) * | 2018-02-02 | 2018-05-08 | 北京市政建设集团有限责任公司 | A kind of hole pile construction method of platform structure |
| CN108331587A (en) * | 2018-03-05 | 2018-07-27 | 北京市政建设集团有限责任公司 | A kind of transverse passage-way ingate abolishes construction and restructuring bankrupt |
| CN112065466A (en) * | 2020-09-23 | 2020-12-11 | 中铁工程装备集团有限公司 | Multilayer underground engineering supporting structure and construction method thereof |
| CN114320376A (en) * | 2022-03-17 | 2022-04-12 | 中国铁路设计集团有限公司 | Supporting structure for underground excavation station to enter main tunnel from cross channel and construction method |
| CN114320376B (en) * | 2022-03-17 | 2022-05-17 | 中国铁路设计集团有限公司 | Supporting structure for underground excavation station to enter main tunnel from cross channel and construction method |
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