CN103290850A - Arch combination foundation pit retaining and protection system and construction method thereof - Google Patents
Arch combination foundation pit retaining and protection system and construction method thereof Download PDFInfo
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- CN103290850A CN103290850A CN2013102470401A CN201310247040A CN103290850A CN 103290850 A CN103290850 A CN 103290850A CN 2013102470401 A CN2013102470401 A CN 2013102470401A CN 201310247040 A CN201310247040 A CN 201310247040A CN 103290850 A CN103290850 A CN 103290850A
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Abstract
The invention relates to an arch combination foundation pit retaining and protection system and a construction method of the arch combination foundation pit and protection system, and provides a combination foundation pit retaining and protection system which is simple in structural style, fast in construction method, capable of sufficiently utilizing property advantages of materials and combining the soil blocking function and waterproof function, and suitable for an arch-shaped cement soil mixing pile large in excavating depth and prefabrication of a high-strength concrete thin-wall steel tube pile, and the construction method of the combination foundation pit retaining and protection system. The arch combination foundation pit retaining and protection system comprises arch-shaped cement soil mixing pile walls (1), high-strength concrete thin-wall steel pipe piles (2), pile top beams (3) and inner supports (4), wherein the high-strength concrete thin-wall steel pipe piles (2) are arranged inside the foundation pit in a scattered mode, the pile top beams (3) connect the high-strength concrete thin-wall steel pipe piles into a whole, each inner support (4) is arranged on the outer side of each high-strength concrete thin-wall steel pipe pile (2), each arch-shaped cement soil mixing pile wall (1) is arranged between two high-strength concrete thin-wall steel pipe pile (2) and the arch-shaped cement soil mixing pile walls (1) to be connected into a whole, and the arch-shaped foundation pit retaining and protection system is formed.
Description
Technical field
The present invention relates to a kind of combined foundation ditch support system and job practices thereof, belong to geotechnical engineering Base hole supporting technology field.Be applicable to that cutting depth is big, groundwater table is buried shallow base pit engineering and gone along with sb. to guard him construction, especially more apparent advantage under weak soil, flour sand silt geological conditions.
Background technology
The major function of foundation pit supporting system is retaining soil and sealing.The cement mixing method barricade can play the effect of retaining soil and sealing simultaneously, but its excavation of foundation pit degree of depth is restricted because the material tensile property is low as foundation ditch rigidity support system.Shaped steel cement mixing method barricade after the improvement then is to insert shaped steel in the cement mixing method of socket continuously, form compound retaining soil sealing supporting and protection structure, this supporting and protection structure technology is simple, pile-forming speed is fast, the body of wall barrier performance is good, and the recyclable repeated use of shaped steel is to advantages such as surrounding environment influence are little.But because the lateral rigidity of shaped steel cement mixing method barricade is mainly provided by shaped steel, lateral rigidity is less relatively, and the shaped steel use amount is bigger.When to foundation pit supporting construction lateral deformation have relatively high expectations, the foundation ditch surrounding enviroment are comparatively responsive to underground SEA LEVEL VARIATION, when especially major part is the stronger soil layer of water permeabilitys such as silt, flour sand in the cement mixing method pile body scope, more answer careful in selecting.
Summary of the invention
Technical problem: the object of the present invention is to provide a kind of arch combined foundation ditch support system and job practices thereof, this arch combined foundation ditch support architecture form is simple, job practices is quick, take full advantage of the material property advantage, have retaining soil and sealing function concurrently, be applicable to arch cement mixing method and prefabricated high-strength concrete thin steel pipe pile combined foundation ditch support system that cutting depth is bigger, and job practices.
Technical scheme: arch combined foundation ditch support system of the present invention comprises arch cement mixing method wall, high-strength concrete thin steel pipe pile, stake apical cap beam and interior support; Wherein, the high-strength concrete thin steel pipe pile disperses to be arranged in the foundation ditch, stake apical cap beam is linked to be an integral body with the high-strength concrete thin steel pipe pile, the interior outside that is positioned at each high-strength concrete thin steel pipe pile of supporting, arch cement mixing method wall lays respectively between two high-strength concrete thin steel pipe piles and is linked to be an integral body, forms arch combined foundation ditch support system.
The job practices of arch combined foundation ditch support system comprises the steps:
The first step: according to engineering geological conditions and the excavation of foundation pit degree of depth, design prefabricated high-strength concrete thin-wall steel tube pile spacing, diameter, thickness, radian, the cement mixing content of every arch cement mixing method wall between the design pile tube;
Second step: design stake apical cap beam size and interior Support Position and size;
The 3rd step: construction arch cement mixing method wall;
The 4th step: cement-soil reaches designing requirement and inserts prefabricated high-strength concrete thin steel pipe pile;
The 5th step: construction stake apical cap beam and interior support;
The 6th step: soil excavation in the foundation ditch, finish the underground structure main body construction;
The 7th step: support and Guan Liang in removing, extract prefabricated high-strength concrete thin steel pipe pile, Foundation Pit Construction finishes.
Beneficial effect: the present invention adopts above technical scheme and corresponding job practices; possess following advantage compared with prior art: arch cement mixing method wall not only plays the sealing effect; more can bear the effect of native water pressure behind the foundation ditch; give full play to the cement-soil compressive property, prefabricated high-strength concrete thin steel pipe pile transmits native water pressure and improves the barricade bending rigidity.Technical scheme principle of the present invention is simple, and construction technology is simple and efficient, shortens the construction period, can save material usage simultaneously.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing and case study on implementation.
Fig. 1: arch combined foundation ditch support system floor map
Have among the above figure: arch cement mixing method wall 1, high-strength concrete thin steel pipe pile 2, stake apical cap beam 3 and interior support 4; The soil body 5 in the foundation ditch; The outer soil body 6 of foundation ditch.
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated:
This arch combined foundation ditch support system comprises arch cement mixing method wall 1, high-strength concrete thin steel pipe pile 2, stake apical cap beam 3 and interior support 4; Wherein, high-strength concrete thin steel pipe pile 2 disperses to be arranged in the foundation ditch, stake apical cap beam 3 is linked to be an integral body with high-strength concrete thin steel pipe pile 2, interior support 4 is positioned at the outside of each high-strength concrete thin steel pipe pile 2, arch cement mixing method wall 1 lays respectively between two high-strength concrete thin steel pipe piles 2 and is linked to be an integral body, forms arch combined foundation ditch support system.
A kind of arch combined foundation ditch support system of the present invention and job practices thereof, its feature mainly comprises the steps:
The first step: according to engineering geological conditions and the excavation of foundation pit degree of depth, design prefabricated high-strength concrete thin steel pipe pile 2 spacings, diameter, thickness, radian, the cement mixing content of every arch cement mixing method wall 1 between the design pile tube;
Second step: design stake apical cap beam 3 sizes and interior support 4 positions and size;
The 3rd step: construction arch cement mixing method wall 1;
The 4th step: cement-soil reaches designing requirement and inserts prefabricated high-strength concrete thin steel pipe pile 2;
The 5th step: construction stake apical cap beam 3 and interior support 4;
The 6th step: the soil body 5 excavations in the foundation ditch, finish the underground structure main body construction;
The 7th step: support 4 and hat beam 3 in removing, extract prefabricated high-strength concrete thin steel pipe pile 2, Foundation Pit Construction finishes.
Claims (2)
1. arch combined foundation ditch support system is characterized in that: this arch combined foundation ditch support system comprises arch cement mixing method wall (1), high-strength concrete thin steel pipe pile (2), stake apical cap beam (3) and interior support (4); Wherein, high-strength concrete thin steel pipe pile (2) disperses to be arranged in the foundation ditch, stake apical cap beam (3) is linked to be an integral body with high-strength concrete thin steel pipe pile (2), interior support (4) is positioned at the outside of each high-strength concrete thin steel pipe pile (2), arch cement mixing method wall (1) lays respectively between two high-strength concrete thin steel pipe piles (2) and is linked to be an integral body, forms arch combined foundation ditch support system.
2. the job practices of an arch combined foundation ditch support system as claimed in claim 1 is characterized in that this job practices comprises the steps:
The first step: according to engineering geological conditions and the excavation of foundation pit degree of depth, design prefabricated high-strength concrete thin steel pipe pile (2) spacing, diameter, thickness, radian, the cement mixing content of every arch cement mixing method wall (1) between the design pile tube;
Second step: design stake apical cap beam (3) size and interior support (4) position and size;
The 3rd step: construction arch cement mixing method wall (1);
The 4th step: cement-soil reaches designing requirement and inserts prefabricated high-strength concrete thin steel pipe pile (2);
The 5th step: construction stake apical cap beam (3) and interior support (4);
The 6th step: the soil body (5) excavation in the foundation ditch, finish the underground structure main body construction;
The 7th step: support (4) and Guan Liang (3) in removing, extract prefabricated high-strength concrete thin steel pipe pile (2), Foundation Pit Construction finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013102470401A CN103290850A (en) | 2013-06-20 | 2013-06-20 | Arch combination foundation pit retaining and protection system and construction method thereof |
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| CN2013102470401A CN103290850A (en) | 2013-06-20 | 2013-06-20 | Arch combination foundation pit retaining and protection system and construction method thereof |
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| CN103290850A true CN103290850A (en) | 2013-09-11 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239584A (en) * | 2015-09-30 | 2016-01-13 | 常州大学怀德学院 | Multi-arch sheet pile supporting structure and construction process |
| CN103696428B (en) * | 2013-11-21 | 2016-08-17 | 广州华磊建筑基础工程有限公司 | White-out gravity type cement soil wall and preparation method thereof |
| CN107794910A (en) * | 2017-09-28 | 2018-03-13 | 华侨大学 | A kind of cement mixing pile isolation arch wall and its method for preventing the nearly tomography failure of pile foundation |
| CN108166504A (en) * | 2018-01-17 | 2018-06-15 | 广州地铁设计研究院有限公司 | A kind of reinforced double steel sheet piling pit supporting construction and its construction method |
| CN109235447A (en) * | 2018-10-11 | 2019-01-18 | 安徽省城建设计研究总院股份有限公司 | A kind of horizontal arch shell foundation pit support device |
| CN109235448A (en) * | 2018-10-11 | 2019-01-18 | 安徽省城建设计研究总院股份有限公司 | A kind of horizontal arch shell foundation pit supporting method |
| CN112302030A (en) * | 2020-10-14 | 2021-02-02 | 中冶集团武汉勘察研究院有限公司 | Foundation pit structure for reducing displacement of cantilever pile foundation pit supporting system and construction method |
| CN114016515A (en) * | 2021-09-30 | 2022-02-08 | 中铁第四勘察设计院集团有限公司 | Double-steel-pipe concrete pile foundation pit supporting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696428B (en) * | 2013-11-21 | 2016-08-17 | 广州华磊建筑基础工程有限公司 | White-out gravity type cement soil wall and preparation method thereof |
| CN105239584A (en) * | 2015-09-30 | 2016-01-13 | 常州大学怀德学院 | Multi-arch sheet pile supporting structure and construction process |
| CN107794910A (en) * | 2017-09-28 | 2018-03-13 | 华侨大学 | A kind of cement mixing pile isolation arch wall and its method for preventing the nearly tomography failure of pile foundation |
| CN108166504A (en) * | 2018-01-17 | 2018-06-15 | 广州地铁设计研究院有限公司 | A kind of reinforced double steel sheet piling pit supporting construction and its construction method |
| CN109235447A (en) * | 2018-10-11 | 2019-01-18 | 安徽省城建设计研究总院股份有限公司 | A kind of horizontal arch shell foundation pit support device |
| CN109235448A (en) * | 2018-10-11 | 2019-01-18 | 安徽省城建设计研究总院股份有限公司 | A kind of horizontal arch shell foundation pit supporting method |
| CN112302030A (en) * | 2020-10-14 | 2021-02-02 | 中冶集团武汉勘察研究院有限公司 | Foundation pit structure for reducing displacement of cantilever pile foundation pit supporting system and construction method |
| CN114016515A (en) * | 2021-09-30 | 2022-02-08 | 中铁第四勘察设计院集团有限公司 | Double-steel-pipe concrete pile foundation pit supporting method |
| CN114016515B (en) * | 2021-09-30 | 2023-03-10 | 中铁第四勘察设计院集团有限公司 | Double-steel-pipe concrete pile foundation pit supporting method |
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Application publication date: 20130911 |