CN105369813A - Geotextile bag type support erecting method - Google Patents
Geotextile bag type support erecting method Download PDFInfo
- Publication number
- CN105369813A CN105369813A CN201510659219.7A CN201510659219A CN105369813A CN 105369813 A CN105369813 A CN 105369813A CN 201510659219 A CN201510659219 A CN 201510659219A CN 105369813 A CN105369813 A CN 105369813A
- Authority
- CN
- China
- Prior art keywords
- fabric bag
- geotechnical fabric
- concrete
- geotechnical
- excavation
- 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
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)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a geotextile bag type support erecting method. Before a foundation pit is excavated, geotextile bags are filled with concrete, and a concrete supporting system with certain rigidity and strength is formed after the concrete solidifies. Due to the fact that the concrete supporting system is formed before excavation, continuous excavation can be achieved in excavating. Thus, the excavating speed is greatly improved, and deformation caused by foundation pit excavation is greatly reduced. The geotextile bag type support erecting method has the good application prospect and is worth popularizing.
Description
Technical field
Support technical field with the present invention relates to weak soil, particularly a kind of geotechnical fabric bag formula bracing frame equipment, method, particularly relate to and soft foundation changes bracing frame equipment, method in deformation of deep excavation control method and reduce excavation based on space to the impact of foundation pit deformation.
Background technology
In the bustling section in city, subway underground station is set, due to station deep foundation ditch planar dimension and cutting depth all larger, and surrounding environment is complicated, when foundation pit deformation is excessive, surrounding buildings settlement amount and gradient may be caused to exceed utmost carrying ability, thus generation crack, affect functional performance and the durability of structure; Also may cause earth surface cracks, other disasters such as line break, base pit engineering problem on deformation is the emphasis controlled for this reason simultaneously.
The excavation stage is the main stage of development of foundation pit deformation.Conventional foundation pit construction is substep stage excavation, after every one deck soil excavation completes, starts just now to support erection.At first floor soil excavation to first support place, install first and support; Second layer soil excavation, to second support place, now has larger distortion, installs second and supports; Third layer soil excavation, to the 3rd road support place, produces larger distortion again ... body of wall put in place before the after-applied pre-applied force of support erection at every layer of excavation, and lateral deformation amount reaches maximum; The accumulative distortion of space enclosing structure, especially near substrate, by deformational overprint in multilayer digging process, its result makes this place's deflection generally can reach maximum.
Foundation ditch is this supports erection construction method from top to bottom, at cutting depth scope interior building enclosure deformational overprint in each excavation stage, is the major reason that space enclosing structure distortion is larger; In addition in the excavation stage of every one deck soil, by supporting erection and soil excavation cross influence, support the erection time general longer, therefore foundation pit deformation also can correspondingly increase by time and space effects, and this point is especially outstanding for foundation ditch performance on soft foundation.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of geotechnical fabric bag formula bracing frame equipment, method, by filling concrete in geotechnical fabric bag, solidify the concrete support system that rear formation has certain Rigidity and strength, therefore continuous excavation can be accomplished during excavation, thus greatly accelerate excavation construction speed, decrease the distortion caused by excavation.
For solving the problem, the present invention specifically by the following technical solutions:
A kind of geotechnical fabric bag formula bracing frame equipment, method, is characterized in that, comprise the following steps:
Step (1), according to on-the-spot foundation ditch size customization geotechnical fabric bag;
Step (2), digs a groove at foundation ditch for the position arranging geotechnical fabric bag formula support system;
Step (3), lays the geotechnical fabric bag customized in a groove, and be full of clear water in geotechnical fabric bag, make geotechnical fabric bag sink in groove;
Step (4), checks geotechnical fabric bag sinkage, confirms that geotechnical fabric bag is drowned into bottom portion of groove;
Step (5), inserts conduit along geotechnical fabric bag mouth;
Step (6), pours in geotechnical fabric bag by concrete by conduit, and perfusion limit, limit promotes, until be only filled into earth's surface sack;
Step (7), completes first concrete support;
Step (8), after concrete setting, excavates every one deck soil, when after excavation of foundation pit to substrate design absolute altitude, builds bed course, and complete construction of bottom plates;
Step (9), makes structure interior wall and abolishes geotechnical fabric bag concrete wall;
Step (10), makes waterproof roofing, and backfill.
Aforesaid a kind of geotechnical fabric bag formula bracing frame equipment, method, is characterized in that, in described step (2), the width of groove is 1m, the dark 5m of the degree of depth of depth ratio foundation ditch.
Aforesaid a kind of geotechnical fabric bag formula bracing frame equipment, method, is characterized in that, in described step (6), concrete is C30 underwater concrete.
Aforesaid a kind of geotechnical fabric bag formula bracing frame equipment, method, is characterized in that, in described step (8) when concrete setting reaches design strength 14.3MPa, excavates every one deck soil, when after excavation of foundation pit to substrate design absolute altitude, builds bed course, and complete construction of bottom plates.
Beneficial effect: a kind of geotechnical fabric bag formula bracing frame equipment, method provided by the invention, before excavation of foundation pit, first in the grooving of supported design position, the dark 5m of the grooving depth ratio excavation design degree of depth, Support Position is placed on bottom land together, namely reinforce and support similar substrate lower support, play the effect that stripping is reinforced under conventional substrate; Other Support Positions within the scope of cutting depth can directly be determined by designing requirement, to the last complete the first road concrete support on top layer.By filling concrete in geotechnical fabric bag, solidify the concrete support system that rear formation has certain Rigidity and strength, therefore continuous excavation can be accomplished during excavation, thus greatly accelerate excavation construction speed, decrease the distortion caused by excavation, and change top-down support erection construction method in the conventional digging process of foundation ditch, have a good application prospect, be worthy to be popularized.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
A kind of geotechnical fabric bag formula bracing frame equipment, method, comprises the following steps:
Step (1), according to on-the-spot foundation ditch size customization geotechnical fabric bag;
Step (2), before excavation of foundation pit, dig a groove at foundation ditch for arranging support system position, the width of groove is 1m, the dark 5m of the degree of depth of depth ratio foundation ditch;
Step (3), lays the geotechnical fabric bag customized in a groove, and be full of clear water in geotechnical fabric bag, make geotechnical fabric bag sink in groove;
Step (4), checks geotechnical fabric bag sinkage, confirms that geotechnical fabric bag is drowned into bottom portion of groove;
Step (5), inserts conduit along geotechnical fabric bag mouth;
Step (6), pours in geotechnical fabric bag by C30 underwater concrete by conduit, and perfusion limit, limit promotes, until be only filled into earth's surface sack; Note concrete density in every layer of geotechnical fabric bag, by filling concrete in geotechnical fabric bag, solidify the concrete support system that rear formation has certain Rigidity and strength;
Step (7), completes first concrete support;
Step (8), when concrete setting reaches design strength 14.3MPa, every one deck soil can be excavated, complete because foundation ditch supports, so foundation ditch is sustainable be excavated to substrate design absolute altitude after, build bed course, and complete construction of bottom plates, check the concrete support system of geotechnical fabric bag, need if desired to strengthen;
Step (9), makes structure interior wall and removes the concrete support system of geotechnical fabric bag;
Step (10), makes waterproof roofing, and backfill.
Be deformed in multilayer digging process in this place's deformational overprint result for the accumulative of space enclosing structure, before considering that intensity index cohesive force (c) of Soft Soil Layer, angle of internal friction (φ) are less simultaneously and causing Soft Soil Layer position place wall, Passive earth forces is little, after wall, soil pressure in active area is large, and then it is unfavorable to going along with sb. to guard him Deformation control, therefore geotechnical fabric bag formula bracing frame equipment, method disclosed by the invention is before excavation, first complete geotechnical fabric bag filling concrete and form concrete support girder system system, accomplish first to support to excavate again, reach the object of Reducing distortion.This method is before excavation of foundation pit, by filling concrete in geotechnical fabric bag, the concrete support system with certain Rigidity and strength is formed after concrete setting, formed owing to excavating front concrete support system, therefore continuous excavation can be accomplished during excavation, thus greatly accelerate excavation construction speed, and greatly reduce the distortion caused by excavation.
More than show and describe general principle of the present invention, principal character and advantage.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. a geotechnical fabric bag formula bracing frame equipment, method, is characterized in that, comprise the following steps:
Step (1), according to on-the-spot foundation ditch size customization geotechnical fabric bag;
Step (2), digs a groove at foundation ditch for arranging geotechnical fabric bag formula support system position;
Step (3), lays the geotechnical fabric bag customized in a groove, and be full of clear water in geotechnical fabric bag, make geotechnical fabric bag sink in groove;
Step (4), checks geotechnical fabric bag sinkage, confirms that geotechnical fabric bag is drowned into bottom portion of groove;
Step (5), inserts conduit along geotechnical fabric bag mouth;
Step (6), pours in geotechnical fabric bag by concrete by conduit, and perfusion limit, limit promotes, until be only filled into earth's surface sack;
Step (7), completes first concrete support;
Step (8), forms geotechnical fabric bag concrete wall after concrete setting, excavates every one deck soil, when after excavation of foundation pit to substrate design absolute altitude, builds bed course, and complete construction of bottom plates;
Step (9), makes structure interior wall and abolishes geotechnical fabric bag concrete wall;
Step (10), makes waterproof roofing, and backfill.
2. a kind of geotechnical fabric bag formula bracing frame equipment, method according to claim 1, is characterized in that, in described step (2), the width of groove is 1m, the dark 5m of the degree of depth of depth ratio foundation ditch.
3. a kind of geotechnical fabric bag formula bracing frame equipment, method according to claim 1, is characterized in that, in described step (6), concrete is C30 underwater concrete.
4. a kind of geotechnical fabric bag formula bracing frame equipment, method according to claim 1, it is characterized in that, after forming geotechnical fabric bag concrete wall in described step (8) when concrete setting reaches design strength 14.3MPa, excavate every one deck soil, when after excavation of foundation pit to substrate design absolute altitude, build bed course, and complete construction of bottom plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659219.7A CN105369813A (en) | 2015-10-14 | 2015-10-14 | Geotextile bag type support erecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510659219.7A CN105369813A (en) | 2015-10-14 | 2015-10-14 | Geotextile bag type support erecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105369813A true CN105369813A (en) | 2016-03-02 |
Family
ID=55372398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510659219.7A Pending CN105369813A (en) | 2015-10-14 | 2015-10-14 | Geotextile bag type support erecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105369813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498966A (en) * | 2016-11-18 | 2017-03-15 | 中国电建集团成都勘测设计研究院有限公司 | Impervious wall construction structure |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139838A (en) * | 2007-10-15 | 2008-03-12 | 上海市隧道工程轨道交通设计研究院 | Construction method for high artesian area ultra-deep foundation pit |
| CN101892667A (en) * | 2010-07-23 | 2010-11-24 | 中国建筑第二工程局有限公司 | Foundation pit supporting device and construction method |
| CN101899828A (en) * | 2010-04-27 | 2010-12-01 | 河海大学 | Construction method of bagged rammed small-diameter soil-cement pile composite foundation |
| CN101956395A (en) * | 2010-10-29 | 2011-01-26 | 浙江宝业建设集团有限公司 | Base board for reducing deformation at periphery of base pit and construction method thereof |
| CN102220759A (en) * | 2010-02-07 | 2011-10-19 | 谢世尊 | New drilling (punching) bored concrete pile construction method |
| CN103437360A (en) * | 2013-08-08 | 2013-12-11 | 广东省基础工程公司 | Construction method without change of support in deep foundation pit engineering |
| CN203755296U (en) * | 2014-03-18 | 2014-08-06 | 中铁二十二局集团第一工程有限公司 | Underground diaphragm wall construction building envelope |
| CN103967050A (en) * | 2014-01-29 | 2014-08-06 | 广州机施建设集团有限公司 | Construction system of subway station |
| CN104480945A (en) * | 2013-06-14 | 2015-04-01 | 孔志坚 | Inversed construction method for foundation pit |
| CN204401631U (en) * | 2014-12-16 | 2015-06-17 | 山东浩珂矿业工程有限公司 | A kind of Concrete Filled mould bag |
| CN204530730U (en) * | 2015-03-27 | 2015-08-05 | 济南轨道交通集团有限公司 | The novel closed cutting off water system of a kind of water rich strata foundation ditch |
-
2015
- 2015-10-14 CN CN201510659219.7A patent/CN105369813A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139838A (en) * | 2007-10-15 | 2008-03-12 | 上海市隧道工程轨道交通设计研究院 | Construction method for high artesian area ultra-deep foundation pit |
| CN102220759A (en) * | 2010-02-07 | 2011-10-19 | 谢世尊 | New drilling (punching) bored concrete pile construction method |
| CN101899828A (en) * | 2010-04-27 | 2010-12-01 | 河海大学 | Construction method of bagged rammed small-diameter soil-cement pile composite foundation |
| CN101892667A (en) * | 2010-07-23 | 2010-11-24 | 中国建筑第二工程局有限公司 | Foundation pit supporting device and construction method |
| CN101956395A (en) * | 2010-10-29 | 2011-01-26 | 浙江宝业建设集团有限公司 | Base board for reducing deformation at periphery of base pit and construction method thereof |
| CN104480945A (en) * | 2013-06-14 | 2015-04-01 | 孔志坚 | Inversed construction method for foundation pit |
| CN103437360A (en) * | 2013-08-08 | 2013-12-11 | 广东省基础工程公司 | Construction method without change of support in deep foundation pit engineering |
| CN103967050A (en) * | 2014-01-29 | 2014-08-06 | 广州机施建设集团有限公司 | Construction system of subway station |
| CN203755296U (en) * | 2014-03-18 | 2014-08-06 | 中铁二十二局集团第一工程有限公司 | Underground diaphragm wall construction building envelope |
| CN204401631U (en) * | 2014-12-16 | 2015-06-17 | 山东浩珂矿业工程有限公司 | A kind of Concrete Filled mould bag |
| CN204530730U (en) * | 2015-03-27 | 2015-08-05 | 济南轨道交通集团有限公司 | The novel closed cutting off water system of a kind of water rich strata foundation ditch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498966A (en) * | 2016-11-18 | 2017-03-15 | 中国电建集团成都勘测设计研究院有限公司 | Impervious wall construction structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102966108B (en) | Construction method of deep foundation pit close to building and adopting underground structure as internal support | |
| CN102094425B (en) | Foundation pit construction method adopting shallow buried depth Larsen steel plate pile as protective cofferdam | |
| CN107313431B (en) | Close on not contour foundation pit method for synchronously constructing | |
| CN103981898B (en) | A kind of inverse underground engineering construction method done of overall open cut node | |
| CN104563128B (en) | The asymmetric deep big foundation pit in soft clay area synchronizes support system and the implementation of excavation | |
| CN106049532B (en) | A kind of pipe gallery open-cut branch blocking means and its construction method | |
| CN102704957A (en) | Shed-frame method for shallowly burying large-sized underground structure construction | |
| CN105040595B (en) | Bridge main pier bearing platform foundation pit supporting structure on gentle slope riverbed bedrock and construction method thereof | |
| CN107119691A (en) | One kind is applied to the square deep basal pit of the high pressure-bearing of rich water sand gravel layer and its excavation method | |
| CN105178327A (en) | Composite retaining structure of foundation pit project and construction method thereof | |
| CN205134193U (en) | Bridge main pier cushion cap foundation pit supporting structure on gentle slope riverbed bedrock | |
| CN104404974A (en) | High-pressure-bearing water and thick sand and pebble formation deep foundation pit grouting bottom-sealing structure and construction technology thereof | |
| CN108589771A (en) | One kind having runed underground station increasing layer transfer node construction method | |
| CN103866701B (en) | Construction method for reserved laterally widened structure of underground box culvert structure | |
| CN204491624U (en) | The synchronous excavation supporting system of the asymmetric deep big foundation pit in soft clay area | |
| CN105239578A (en) | Water-rich sand layer deep foundation pit underwater construction method | |
| CN101824825B (en) | Deep foundation pit open cutting construction method | |
| CN104652444A (en) | Construction method for overall reverse operation of ultra-large type deep foundation pit center island type alternative earth excavation | |
| CN101498133B (en) | Method and supporting construction for enlarging basement top-down method earth excavation space | |
| CN204940298U (en) | A kind of Composite Enclosure Structure of base pit engineering | |
| CN203939036U (en) | A kind of steel sheet pile cofferdam structure that is applicable to river course | |
| CN104499489B (en) | Foundation pit construction method | |
| CN209760299U (en) | light and shade of avoiding house to tear open and move is dug and is combined subway station structure | |
| CN107642101A (en) | A kind of rocky bed steel cofferdam back cover leak stopping and guarded drainage construction method | |
| CN104480945A (en) | Inversed construction method for foundation pit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160302 |