CN207452911U - A kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure - Google Patents
A kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure Download PDFInfo
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- CN207452911U CN207452911U CN201721455197.3U CN201721455197U CN207452911U CN 207452911 U CN207452911 U CN 207452911U CN 201721455197 U CN201721455197 U CN 201721455197U CN 207452911 U CN207452911 U CN 207452911U
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- foundation pit
- shaped steel
- enclosure wall
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- supporting structure
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Abstract
The utility model is related to a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure, include the foundation pit of underground agent structure, the agent structure of a plurality of circuit is staggeredly arranged up and down or left and right position in foundation pit；Foundation pit includes the big foundation pit on top and the small foundation pit of lower part；Big foundation pit both sides set enclosure wall, and Guan Liang is provided at the top of enclosure wall；Small foundation pit one side is provided with enclosure wall, is same enclosure wall with the big foundation pit side, and opposite side is provided with shaped steel spray anchor combination gear shield；Concrete slab support is provided at the top of small foundation pit；It is vertical layered in foundation pit to be provided with concrete support or bracing members.Earth excavation and Underground Construction space are good, reduce pit enclosure parapet in ground consisting of hard rock hole（Stake）The problem of encroachment line, is gone along with sb. to guard him in inclined hole, can play the role of retaining soil and water；Plate support is provided between upper body structure and enclosure wall, plays the role of good stress check calculation, can ensure deep pit monitor.
Description
Technical field
The utility model belongs to traffic engineering technical field, and in particular to multi-thread crossings on different level abnormal shape deep foundation pit support knot
Structure.
Background technology
In recent years, the country of China track traffic Large scale construction is inevitable in the core plot that city is bustling or plans
There is a plurality of gauze plane, facade intersection, overlapping etc., thus also generate many special-shaped open-cut foundation ditch.Special-shaped foundation pit stress is answered
It is miscellaneous, be susceptible to stress concentration, if supporting set improper, constructional difficulties, inefficiency, result even in deformation it is excessive, topple,
The engineering accidents such as collapse.
For special-shaped foundation pit, the support system taken at present is mostly with fender post（Wall）Based on+inner support unitary system, for
How under the premise that security is guaranteed the special-shaped foundation pit of native rock compound stratum, provides a kind of simple, economy, the supporting of rapid construction
Structure is very necessary.
The content of the invention
The purpose of this utility model is to provide a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure, and support stiffness is big,
Facilitate earth excavation and Underground Construction.
Technical solution is used by the utility model：
A kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure, it is characterised in that：
Include the foundation pit of underground agent structure, the agent structure of a plurality of circuit staggers up and down or left and right position in foundation pit
Arrangement；
Foundation pit includes the big foundation pit on top and the small foundation pit of lower part；Big foundation pit both sides set enclosure wall, are set at the top of enclosure wall
It is equipped with Guan Liang；Small foundation pit one side is provided with enclosure wall, is same enclosure wall with the big foundation pit side, and opposite side is provided with shaped steel spray anchor
Combination gear shield；Concrete slab support is provided at the top of small foundation pit；
It is vertical layered in foundation pit to be provided with concrete support or bracing members.
Shaped steel column is provided in big foundation pit, shaped steel column bottom is provided with upright post basic stake.
Shaped steel spray anchor combination gear shield includes shaped steel, and anchor pole is set between shaped steel；
Shaped steel vertical section is set up, and lock foot anchor tube is set at segmented seam.
Shaped steel spray anchor combination gear shield outside is provided with vertical Grouting Pipe.
Concrete support end peaks at enclosure wall by being propped up after being connected with concrete purlin.
Bracing members end peaks at enclosure wall by steel purlin branch or shaped steel sprays anchor combination gear shield.
It is provided in agent structure in small foundation pit and switches support.
It is provided at the top of Guan Liang and blocks waterwall.
The utility model has the following advantages：
Earth-retaining sealing is carried out using the good enclosure wall of rigidity and water-stagnating effect on the outside of the utility model structure, lower part hard rock
Layer foundation pit one side is using shaped steel combined bolting and shotcrete and built-in slip casting pipe, one side are using the downwardly extending enclosure wall of top foundation pit, with reference to geology
Situation differentiation is set, and stability is good, safe, lower part earth excavation and main body construction space are good, and economic performance is opposite
Preferably, avoid and inside is cheated in hole using fender post（Wall）When inclined hole, invade limit, a large amount of useless empty the problems such as boring.
Description of the drawings
Fig. 1 is that the multi-thread crossings on different level abnormal shape deep foundation pit supporting structure horizontal path directional profile of the utility model is arranged
Figure.
Fig. 2 is the multi-thread crossings on different level abnormal shape deep foundation pit supporting structure fair line road directional profile layout drawing of the utility model.
In figure：1- enclosure walls（Stake）, 2- Guan Liangs, 3- shaped steel columns, 4- upright post basic stakes, 5- concrete supports, 6- steel branch
Support, 7- concrete purlins, 8- steel purlins, 9- shaped steel, 10- anchor poles, 11- lock foot pipe layings, 12- switch support, and 13- concrete slabs support,
14- agent structures, 15- block waterwall, 16- Grouting Pipes.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model is related to multi-thread crossings on different level abnormal shape deep foundation pit supporting structure, include the base of underground agent structure 14
Hole, the agent structure 14 of a plurality of circuit are staggeredly arranged up and down or left and right position in foundation pit.Foundation pit includes the big foundation pit on top
With the small foundation pit of lower part；Big foundation pit both sides set enclosure wall 1, and 1 top of enclosure wall is provided with Guan Liang 2, and 2 top of Guan Liang, which is provided with, blocks
Waterwall 15；Small foundation pit one side sets enclosure wall 1, is same enclosure wall 1 with the big foundation pit side, and opposite side is provided with shaped steel spray anchor group
Close gear shield；Concrete slab support 13 is provided at the top of small foundation pit, is arranged between 14 bottom plate of upper body structure and enclosure wall 1,
0.5~0.8m of thickness of slab, plate support formwork erection after upper body structure base slab pours completion, waterproof layer is laid with pour, plate support and main body
Reinforcing bar, which disconnects, between structure is set.Plate support needs continuously to set in horizontal direction according to stress, also space set.It is erected in foundation pit
Layering is provided with concrete support 5 or bracing members 6, is arranged as required to switch support in the agent structure 14 in small foundation pit
12, support arrangement and spacing are determined according to geological conditions and environmental protection requirement after carrying out force analysis.
Shaped steel column 3 is set according to foundation pit width in big foundation pit, 3 bottom of shaped steel column is arranged at upright post basic stake 4.
Shaped steel spray anchor combination gear shield includes shaped steel 9, sets anchor pole 10 between shaped steel 9, anchors into rock mass certain depth, shaped steel water
It puts down and is reliably welded using reinforcing bar between, shaped steel surface and axial clearance are using gunite concrete closing, leveling.9 spacing of shaped steel
0.5~1.0m, vertical section is set up, 3.5~5m of section length, and lock foot anchor tube 11 is set at segmented seam.Shaped steel spray anchor combination
Gear shield outside is provided with vertical Grouting Pipe 16, can in advance be buried in excavation of foundation pit bottom of foundation ditch big to top, Grouting Pipe water
Flat 0.8~1.2m of spacing can set 1 row or 2 rows, when running into underground water during the excavation of foundation pit of lower part, using on platform
Grouting Pipe carries out grouting for water blocking.Shaped steel forms integral protection system with anchor pole, anchor tube and in-network processing.
5 end of concrete support peaks at enclosure wall 1 by being propped up after being connected with concrete purlin 7.6 end of bracing members passes through steel
Purlin 8 peaks at enclosure wall 1 or shaped steel spray anchor combination gear shield.5 6~9m of horizontal direction spacing of concrete support, vertical spacing 4~
6m.6 3~4.5m of horizontal direction spacing of bracing members, vertical 4~6m of spacing.
The construction method of above-mentioned multi-thread crossings on different level abnormal shape deep foundation pit supporting structure, comprises the following steps：
Step 1：Enclosure wall 1 from 14 outside of earth's surface construction agent structure, while the construction of upright post basic stake 4 is completed, and
Interim shaped steel column 3,2.5~3.5m of insertion depth are inserted into before concrete final set；Then the Guan Liang on 1 top of construction enclosure wall
2 and block waterwall 15；
Step 2：Foundation pit earth stone excavation is carried out, needs to be layered between erection foundation pit enclosure wall 1 according to geology and surrounding enviroment
Concrete support 5 or bracing members 6, support end concrete purlin 7 or steel purlin 8 are set；The principle for first supportting and digging afterwards is followed, really
Protect supporting safety；Bracing members 6, concrete support 5 are reliably connected with 3 infall of shaped steel column simultaneously；
Step 3：Support, spoil stone to big bottom of foundation ditch are set up successively, pours bottom cushion, complete the small foundation pit in lower part
Grouting Pipe 16 it is embedded；
Step 4：The small excavation of foundation pit of lower part hard rock is carried out, segmentation is excavated, is layered progress, vertical 3~5m of excavation height,
8~10m of horizontal direction step spacing；The protection body of gap gunite concrete between shaped steel 9, anchor pole 10 and shaped steel on the inside of constructing
System, and lock foot anchor tube 11 is set in steelframe merogenesis connector bottom, 3~5m of rock mass is anchored into, forms whole shaped steel spray anchor combination gear
Shield；
Step 5：The small foundation pit in lower part sets up one of bracing members 6；It, can be appropriate according to stress needs if cutting depth is more than 8m
Increase support, present case lower part cutting depth about 10m；Bottom of foundation ditch is excavated to, concrete cushion, waterproof layer is laid with, starts to pour
Build the agent structure 14 of lower part；
Step 6：Bottom plate, the side wall of underground agent structure 14 are poured from bottom to top, and support 12 is switched in erection, is removed most next
Road bracing members 6 are completed lower rectangular frame structure and are poured；
Step 7：Start the big foundation pit agent structure 14 in top to pour, complete bed course first and pour, be laid with waterproof layer, then
Pour bottom plate, the side wall of big foundation pit agent structure 14；Before the most lower support together of big foundation pit is removed, concrete slab support 13 is completed
Pour, ensure formed together continuous rigid support；Then dismounting and upper body structure side wall are supported and top plate pours
It builds, forms upper frame agent structure, complete the excavation and main body construction of entire multi-thread special-shaped foundation pit.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality
Type specification and to any equivalent conversion that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (8)
1. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure, it is characterised in that：
Including underground agent structure（14）Foundation pit, the agent structure of a plurality of circuit（14）The up and down or left and right position in foundation pit
It is staggeredly arranged；
Foundation pit includes the big foundation pit on top and the small foundation pit of lower part；Big foundation pit both sides set enclosure wall（1）, enclosure wall（1）Top
It is provided with Guan Liang（2）；Small foundation pit one side is provided with enclosure wall（1）, it is same enclosure wall with the big foundation pit side（1）, opposite side sets
It is equipped with shaped steel spray anchor combination gear shield；Concrete slab support is provided at the top of small foundation pit（13）；
It is vertical layered in foundation pit to be provided with concrete support（5）Or bracing members（6）.
2. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure according to claim 1, it is characterised in that：
Shaped steel column is provided in big foundation pit（3）, shaped steel column（3）Bottom is provided with upright post basic stake（4）.
3. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure according to claim 1, it is characterised in that：
Shaped steel spray anchor combination gear shield includes shaped steel（9）, shaped steel（9）Between anchor pole is set（10）；
Shaped steel（9）Vertical section is set up, and lock foot anchor tube is set at segmented seam（11）.
4. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure according to claim 3, it is characterised in that：
Shaped steel spray anchor combination gear shield outside is provided with vertical Grouting Pipe（16）.
5. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure according to claim 1, it is characterised in that：
Concrete support（5）End by with concrete purlin（7）Branch peaks at enclosure wall after connection（1）.
6. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure according to claim 1, it is characterised in that：
Bracing members（6）End passes through steel purlin（8）Branch peaks at enclosure wall（1）Or shaped steel spray anchor combination gear shield.
7. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure according to claim 1, it is characterised in that：
Agent structure in small foundation pit（14）In be provided with and switch support（12）.
8. a kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure according to claim 1, it is characterised in that：
Guan Liang（2）Top, which is provided with, blocks waterwall（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721455197.3U CN207452911U (en) | 2017-11-03 | 2017-11-03 | A kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure |
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|---|---|---|---|
| CN201721455197.3U CN207452911U (en) | 2017-11-03 | 2017-11-03 | A kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700498A (en) * | 2017-11-03 | 2018-02-16 | 中铁第勘察设计院集团有限公司 | Multi-thread crossings on different level abnormal shape deep foundation pit supporting structure and its construction method |
| CN109403349A (en) * | 2018-12-10 | 2019-03-01 | 中建局集团建设发展有限公司 | A kind of upper flexible and lower rigid system of deep foundation pit support and its construction method |
| CN109629577A (en) * | 2018-12-14 | 2019-04-16 | 山东大学 | A kind of Adjacent Pit successively excavates co-walled structural support system and construction method |
-
2017
- 2017-11-03 CN CN201721455197.3U patent/CN207452911U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107700498A (en) * | 2017-11-03 | 2018-02-16 | 中铁第勘察设计院集团有限公司 | Multi-thread crossings on different level abnormal shape deep foundation pit supporting structure and its construction method |
| CN109403349A (en) * | 2018-12-10 | 2019-03-01 | 中建局集团建设发展有限公司 | A kind of upper flexible and lower rigid system of deep foundation pit support and its construction method |
| CN109629577A (en) * | 2018-12-14 | 2019-04-16 | 山东大学 | A kind of Adjacent Pit successively excavates co-walled structural support system and construction method |
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