CN203113361U - Deep foundation pit sealing precipitation device - Google Patents

Deep foundation pit sealing precipitation device Download PDF

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Publication number
CN203113361U
CN203113361U CN 201320097133 CN201320097133U CN203113361U CN 203113361 U CN203113361 U CN 203113361U CN 201320097133 CN201320097133 CN 201320097133 CN 201320097133 U CN201320097133 U CN 201320097133U CN 203113361 U CN203113361 U CN 203113361U
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CN
China
Prior art keywords
foundation pit
steel sheet
foundation ditch
precipitation device
deep foundation
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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.)
Expired - Lifetime
Application number
CN 201320097133
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Chinese (zh)
Inventor
张连科
邱乐方
万亚鲁
高瑞
张少康
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Jinan Urban Construction Group Co Ltd
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Jinan Urban Construction Group Co Ltd
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Filing date
Publication date
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Priority to CN 201320097133 priority Critical patent/CN203113361U/en
Application granted granted Critical
Publication of CN203113361U publication Critical patent/CN203113361U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a deep foundation pit sealing precipitation device which is suitable for foundation pit excavation construction in rich underground water regions. The deep foundation pit sealing precipitation device comprises a foundation pit, and is characterized in that a supporting and protecting system is placed on the upper surface of the foundation pit, and is supported and protected through steel sheet piles; a water-stopping curtain system is placed on the periphery of the supporting and protecting system, and is formed by cement dust injection piles in a lap joint mode; and cross arms are connected among the steel sheet piles. The deep foundation pit sealing precipitation device has the advantages of being capable of effectively solving the problem that precipitation construction greatly affects surroundings, improving working efficiency, saving costs, having good social benefits and economic benefits, wide application space in foundation pit excavation construction in the rich underground water regions and popularization value.

Description

Deep foundation ditch sealing precipitation device
(1) technical field
The utility model relates to a kind of deep foundation ditch sealing precipitation device, particularly a kind of deep foundation ditch sealing precipitation device that is applicable to the excavation of foundation pit construction of rich groundwater zone.
(2) background technology
In the deep foundation pit precipitation work progress, often occur the differential settlement phenomenon occurring because precipitation causes peripheral structure (building) to build thing, at present, also do not have a kind of equipment to address this problem preferably.
(3) utility model content
The utility model is in order to remedy the deficiencies in the prior art, provides a kind of efficiency of construction height, cost is low, workmanship is high, efficiently solve the deep foundation ditch sealing precipitation device of the considerable influence that dewatering construction produces surrounding enviroment.
The utility model is achieved by the following technical solution:
A kind of deep foundation ditch sealing precipitation device, comprise foundation ditch, it is characterized in that: described foundation ditch upper surface is provided with support system, support system adopts the steel sheet pile supporting, be provided with the water-stop curtain system around the support system, the water-stop curtain system adopts Investigation of Cement Powder Spray stake overlap joint to form, and is connected with stull between the steel sheet pile.
Described water-stop curtain system is arranged at steel sheet pile 1~2m place in addition.
It is long by 0.01~0.15 that the stake footpath of described Investigation of Cement Powder Spray stake is selected 500mm, Investigation of Cement Powder Spray stake lap length for use, and is not less than 150mm, perpendicularity deviation≤1/100.
The verticality control of described steel sheet pile is 1.5%.
The beneficial effects of the utility model are: water-stop curtain has strengthened the distance footpath of seepage action of ground water in conjunction with pattern foundation pit supporting structure system dewatering construction, changed the path of foundation ditch periphery underground water to the interior seepage flow in hole, stop the infiltration of domatic and substrate, stablize the soil body, prevent erosion, overcome the drift sand phenomenon, the additional settlement control that the stratum of foundation ditch periphery is formed because of precipitation is to a certain degree, thereby reduced the influence of foundation pit dewatering to surrounding enviroment; Guaranteeing to have guaranteed cost minimization under the safe and effective condition that reaches dewatering effect of foundation ditch; Meet the requirement of foundation pit construction sealing precipitation technology in " 10 new technologies of builing industry " green construction technology, obtained good environmental benefit; Compare with traditional handicraft, have good social benefit and economic benefit, greatly promotional value is arranged in the municipal engineering deep foundation pit construction.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is plane structure schematic diagram of the present utility model;
Accompanying drawing 2 is section structure schematic diagram of the present utility model;
Among the figure, 1 foundation ditch, 2 steel sheet piles, 3 Investigation of Cement Powder Spray stakes, 4 stulls.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises foundation ditch 1, foundation ditch 1 upper surface is provided with support system, and support system adopts steel sheet pile 2 supportings, is provided with the water-stop curtain system around the support system, the water-stop curtain system adopts Investigation of Cement Powder Spray stake 3 overlap joints to form, and is connected with stull 4 between the steel sheet pile 2.The water-stop curtain system is arranged at steel sheet pile 2 1~2m place in addition.It is long by 0.01~0.15 that the stake footpath of Investigation of Cement Powder Spray stake 3 is selected 500mm, Investigation of Cement Powder Spray stake 3 lap length for use, and is not less than 150mm, perpendicularity deviation≤1/100.The verticality control of steel sheet pile 2 is 1.5%.
A kind of job practices of deep foundation ditch sealing precipitation device may further comprise the steps:
(1), preparation of construction: according to the geology exploration report field investigation is carried out in aspects such as foundation ditch position groundwater table situation, soil property, by the data of grasping, determine foundation pit supporting system and water-stop curtain form etc.According to designing requirement, foundation pit supporting system stability, water-stop curtain pile body length and stake footpath are calculated, determine construction parameter.For rich groundwater, water level is more shallow, and has the area of drift sand phenomenon, and foundation pit supporting system is generally selected the i shaped steel sheet pile for use.The sealing dewatering construction adopts the suspension type water-stop curtain;
(2), measure unwrapping wire: according to design drawing, emit the foundation ditch sideline, determine the support system plan-position according to the foundation ditch sideline, determine support system peripheral water stopping curtain layout simultaneously, water-stop curtain is arranged on steel sheet pile 1~2 meter in addition, arranges around steel sheet pile.
(3), foundation ditch steel sheet pile support system is installed: according to calculated data, steel sheet pile is carried out solid matter according to the unwrapping wire position arrange.Select for use hydraulic crawler vibrating type pile driver to beat and pull out steel sheet pile, control well in the piling process stake verticality and piling speed, prevent from causing tilt phenomenon in the piling process.When advancing stake is discharged near the hammering and pulling-out machine within 6 meters scopes, hammering and pulling-out machine plays pile holder and hangs the piling gray line sky simultaneously.Steel sheet pile adopts vibration-sunk, adopts deadweight to sink during the beginning pile sinking, treats that pile body has to adopt vibration-sunk again after enough stable, should temporarily welding with reinforcing bar last sheet pile and front before follow-up steel sheet pile is squeezed into;
(4), the Investigation of Cement Powder Spray pile water stopping curtain is installed: determine the water-stop curtain pile body degree of depth according to hole end seepage deformation and two aspects of foundation ditch surrounding ground sedimentation.At first check and approve the rotary churning pile run of steel and carry out mark according to the pile driving position absolute altitude, then the rotary churning pile machine is placed on the locating hole position, guarantee to get into the verticality of code requirement simultaneously, behind the pile-forming machine perching, must do level correction, make position, rig perpendicular alignmnet hole, and fix a machine, perpendicularity deviation is less than 1/100.When spraying the slip casting operation, Grouting Pipe is reached the absolute altitude of regulation after, carry out underground examination spray, namely carry out spraying operation from bottom to top after all are normal, adjust air compressor machine, high mudjack, make its pressure reach that the hoisting velocity according to designing requirement promotes the rotation whitewashing after the designing requirement, to a stake top mark height;
(5), channel excavation: the groove step excavation, whenever finish a step and carry out support system simultaneously and enclose auxiliary draining in purlin reinforcement of weld and the hole.Take submersible pump to extract simultaneously or draw to ooze the interior existing underground water of excavation of foundation pit scope;
(6), structure construction, backfill and steel sheet pile reclaim: after the underground structure construction is finished, from foundation ditch bottom slice backfilling compaction, when being backfilled to the stull position, removing stull and continue backfill, until being backfilled to design elevation.The space that stays after steel sheet pile is extracted is closely knit with the yellow ground backfill.
Adopt deep foundation ditch sealing precipitation device of the present utility model, the measure that intercepts water at the bottom of employing Investigation of Cement Powder Spray pile water stopping curtain+foundation ditch underseal is in conjunction with foundation ditch steel sheet pile support system, and the underground water of stopping foundation pit side-wall and foundation ditch ground flows into foundation ditch.Take dewatering measure to extract simultaneously or draw the existing phreatic precipitation method that oozes in the excavation of foundation pit scope, the additional settlement control that the stratum of foundation ditch periphery is formed because of precipitation is to a certain degree, thereby reduces foundation pit dewatering to the influence of surrounding enviroment.
Adopt the job practices of deep foundation ditch sealing precipitation device of the present utility model, concrete construction sequence is as follows: preparation of construction → measurement unwrapping wire → foundation ditch steel sheet pile support system → Investigation of Cement Powder Spray pile water stopping curtain → channel excavation → structure construction, backfill and steel sheet pile reclaim.
Adopting deep foundation ditch of the present utility model sealing precipitation device, should be that drift sand or periphery have structure (building) and build in the deep foundation pit construction of object area and adopt in rich groundwater, soil property.
Adopt deep foundation ditch sealing precipitation device of the present utility model, in processes such as No. 7 way road drainage workss in high and new technology industrial development zone, Jinan, the Jinan second destructor plant 110kV electricity generation grid-connecting engineering, be used widely, played the effect of remarkable precipitation, and surrounding enviroment have not been had a negative impact.

Claims (4)

1. a deep foundation ditch seals the precipitation device, comprise foundation ditch (1), it is characterized in that: described foundation ditch (1) upper surface is provided with support system, support system adopts steel sheet pile (2) supporting, be provided with the water-stop curtain system around the support system, the water-stop curtain system adopts Investigation of Cement Powder Spray stake (3) overlap joint to form, and is connected with stull (4) between the steel sheet pile (2).
2. deep foundation ditch according to claim 1 seals the precipitation device, and it is characterized in that: described water-stop curtain system is arranged at steel sheet pile (2) 1~2m place in addition.
3. deep foundation ditch according to claim 1 seals the precipitation device, it is characterized in that: 500mm is selected in the stake footpath of described Investigation of Cement Powder Spray stake (3) for use, Investigation of Cement Powder Spray stake (3) lap length is that stake is long by 0.01~0.15, and is not less than 150mm, perpendicularity deviation≤1/100.
4. deep foundation ditch according to claim 1 seals the precipitation device, it is characterized in that: the verticality control of described steel sheet pile (2) is 1.5%.
CN 201320097133 2013-03-04 2013-03-04 Deep foundation pit sealing precipitation device Expired - Lifetime CN203113361U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320097133 CN203113361U (en) 2013-03-04 2013-03-04 Deep foundation pit sealing precipitation device

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Application Number Priority Date Filing Date Title
CN 201320097133 CN203113361U (en) 2013-03-04 2013-03-04 Deep foundation pit sealing precipitation device

Publications (1)

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CN203113361U true CN203113361U (en) 2013-08-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103114599A (en) * 2013-03-04 2013-05-22 济南城建集团有限公司 Deep foundation pit sealed precipitation device and construction method thereof
CN103615015A (en) * 2013-10-26 2014-03-05 芜湖新兴铸管有限责任公司 Building foundation reinforcing structure
CN109137949A (en) * 2018-09-06 2019-01-04 中铁第勘察设计院集团有限公司 Deep soft stratum combined type foundation pit Water outburst treatment construction and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103114599A (en) * 2013-03-04 2013-05-22 济南城建集团有限公司 Deep foundation pit sealed precipitation device and construction method thereof
CN103114599B (en) * 2013-03-04 2016-05-18 济南城建集团有限公司 Deep basal pit sealing dewatering device and construction method thereof
CN103615015A (en) * 2013-10-26 2014-03-05 芜湖新兴铸管有限责任公司 Building foundation reinforcing structure
CN109137949A (en) * 2018-09-06 2019-01-04 中铁第勘察设计院集团有限公司 Deep soft stratum combined type foundation pit Water outburst treatment construction and method

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CX01 Expiry of patent term

Granted publication date: 20130807

CX01 Expiry of patent term