CN203939036U - A kind of steel sheet pile cofferdam structure that is applicable to river course - Google Patents

A kind of steel sheet pile cofferdam structure that is applicable to river course Download PDF

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Publication number
CN203939036U
CN203939036U CN201420296661.9U CN201420296661U CN203939036U CN 203939036 U CN203939036 U CN 203939036U CN 201420296661 U CN201420296661 U CN 201420296661U CN 203939036 U CN203939036 U CN 203939036U
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China
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steel sheet
sheet pile
pile
row
interior row
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CN201420296661.9U
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Inventor
李伟
鲁颖
伊颖锋
付冬平
王志刚
梁智岳
王祥林
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Guangzhou City Engineering Design studies total institute
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Grand Project Contracting Co Ltd In Guangzhou
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Abstract

The utility model discloses a kind of steel sheet pile cofferdam structure that is applicable to river course, comprise the outer row's steel sheet pile arranging near water, the single steel sheet pile that interior row's steel sheet pile and backwater arrange, arrange outside between steel sheet pile and interior row's steel sheet pile and fill packed clay, outer row's steel sheet pile is embedded in riverbed, interior row's steel sheet pile is embedded in ground consisting of hard rock through riverbed, single steel sheet pile is embedded in ground consisting of hard rock through existing embankment stratum, single steel sheet pile, the end face that interior row's steel sheet pile contacts with ground consisting of hard rock is provided with argillic horizon, by double steel sheet pile is set, effectively solve cofferdam side and land side pressure imbalance problem near water, improve the resistance to overturning of steel sheet-pile cofferdam, auger is dug in advance auxiliary equipment and first the ground consisting of hard rock of bottom, riverbed is carried out to fragmentation backfill clay, while being pressed into steel sheet pile, clay covers in steel sheet pile bottom and gos deep into, to ground consisting of hard rock, forming an argillic horizon in steel sheet pile lower surface, stop current from the infiltration of steel sheet pile bottom, sealing performance is good.

Description

A kind of steel sheet pile cofferdam structure that is applicable to river course
Technical field
the utility model relates to steel sheet pile cofferdam structure technical field, particularly a kind of steel sheet pile cofferdam structure that is applicable to river course.
Background technology
For excavation of foundation pit in water, specifically should there is the protection of safe foundation ditch, around foundation ditch, build cofferdam, to draining, dig base and build foundation construction by laying bricks or stones.River channel sewage intercepting engineering often need to flow away wastewater interception pipe to being embedded in riverbed along the river, constructs at present in river course, mostly adopts steel sheet-pile cofferdam, for foundation excavation in water provides supporting, carries out safety work to realize constructor and equipment in anhydrous cofferdam.
But, for having firm hard formation and jackstone, boulder bed situation under riverbed, in the time building steel sheet-pile cofferdam, steel sheet pile bottom is difficult to through jackstone, boulder bed and is embedded in firm hard formation be fixed, thereby be difficult to ensure stability and the safety of steel sheet-pile cofferdam entirety, have construction safety hidden danger, easily there is seepage flow in steel sheet pile bottom and firm hard formation junction simultaneously, is difficult to the stagnant water effect that reaches good; In addition, when closing on bank in river course and building steel sheet-pile cofferdam, there is the problem of pressure imbalance in back side steel sheet pile and upstream face steel sheet pile, easily causes steel sheet-pile cofferdam unstability, affects the stability of steel sheet-pile cofferdam.
Utility model content
Technical problem to be solved in the utility model is to provide the steel sheet pile cofferdam structure that is applicable to river course that a kind of structural safety is stable, stagnant water effect is good.
For solving the problems of the technologies described above adopted technical scheme: a kind of steel sheet pile cofferdam structure that is applicable to river course, comprise the double steel sheet pile of setting near water and the single steel sheet pile that backwater arranges, described double steel sheet pile comprises outer row's steel sheet pile and the interior row's steel sheet pile that spaced and parallel arranges, between described outer row's steel sheet pile and interior row's steel sheet pile, fill packed clay and form operation platform, between described outer row's steel sheet pile and interior row's steel sheet pile, top is connected by a pull bar, described outer row's steel sheet pile is embedded in riverbed, described interior row's steel sheet pile is embedded in ground consisting of hard rock through riverbed, described single steel sheet pile is embedded in ground consisting of hard rock through existing embankment stratum, described single steel sheet pile, the end face that interior row's steel sheet pile contacts with ground consisting of hard rock is provided with argillic horizon, between described single steel sheet pile and interior row's steel sheet pile, be laterally provided with multiple tracks horizontal shore, the foundation ditch bottom surrounding at described single steel sheet pile and interior row's steel sheet pile is provided with cement mixing pile, build and be formed with a concrete strengthening layer at described cement mixing pile top.
Beneficial effect: this steel sheet pile cofferdam structure by cofferdam near water a side double steel sheet pile is set and fills packed clay between the two, effectively solve cofferdam side and land side pressure imbalance problem near water, resistance to overturning and the safety of steel sheet-pile cofferdam are improved, the platform that simultaneously fills clay formation can be used as operation platform, makes construction more convenient; Meanwhile, double steel sheet pile, by pull bar is set, is connected to form entirety by double steel sheet pile, when being subject under extraneous load action, double steel sheet pile forms cooperative transformation, solves the larger problem of steel sheet pile malformation, further strengthens the structural stability of steel sheet-pile cofferdam.Wherein, being pressed into before single steel sheet pile and interior row's steel sheet pile, auger is dug in advance auxiliary equipment and first the ground consisting of hard rock of bottom, riverbed is carried out to fragmentation backfill clay, because clay has the strong and features such as bad hydraulic permeability of viscosity, steel sheet pile is when being pressed into the broken region of ground consisting of hard rock, and clay covers in steel sheet pile bottom deeply to ground consisting of hard rock, and then clay and ground consisting of hard rock are combined closely, form an argillic horizon in steel sheet pile lower surface, stop current from the infiltration of steel sheet pile bottom, sealing performance is good.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described further;
Fig. 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
With reference to Fig. 1, a kind of steel sheet pile cofferdam structure that is applicable to river course of the utility model, comprise the double steel sheet pile of setting near water and the single steel sheet pile 1 that backwater arranges, double steel sheet pile comprises outer row's steel sheet pile 2 and the interior row's steel sheet pile 3 that spaced and parallel arranges, arrange outside and between steel sheet pile 2 and interior row's steel sheet pile 3, fill packed clay 4 and form operation platform, between outer row's steel sheet pile 2 and interior row's steel sheet pile 3, top is connected by a pull bar 5, outer row's steel sheet pile 2 is embedded in riverbed, single steel sheet pile 1 is through existing embankment and jackstone, boulder bed and interior row's steel sheet pile 3 are embedded in ground consisting of hard rock through riverbed, single steel sheet pile 1, the end face that interior row's steel sheet pile 3 contacts with ground consisting of hard rock is provided with argillic horizon 6, between single steel sheet pile 1 and interior row's steel sheet pile 3, be laterally provided with multiple tracks horizontal shore 7, the foundation ditch bottom surrounding at single steel sheet pile 1 and interior row's steel sheet pile 3 is provided with cement mixing pile 8, build and be formed with a concrete strengthening layer 9 at cement mixing pile 8 tops.
Compared with prior art Steel Sheet Pile cofferdam, this steel sheet-pile cofferdam is to adopt static-pressure pile planting machine to carry out steel sheet pile construction by static pressure engineering method, pile driver rides on the steel sheet pile of having constructed and walks, realize under next-door neighbour's river course building and narrow inland river river surface and bridge and constructing, overcome and abolish existing embankment and jackstone, boulder bed difficulty and urban waterway bridge along the line is numerous, under-clearance higher primary school, the problem that difficulty of construction is large, thereby, realize river course periphery building without injury, to surrounding enviroment noiselessness, friction, pollution-free, compared with conventional concrete support pattern economy, environmental protection, green, low-carbon (LC), meet sustainable development idea.Particularly, being pressed into before single steel sheet pile 1 and interior row's steel sheet pile 3, first dig in advance auxiliary equipment by auger and first the ground consisting of hard rock of bottom, riverbed is carried out to fragmentation backfill clay, simultaneously static-pressure pile planting machine is pressed into steel sheet pile ground consisting of hard rock and has the broken region of clay, steel sheet pile bottom is embedded in ground consisting of hard rock, and so construction forms and is embedded in single steel sheet pile 1 and the interior row's steel sheet pile 3 in ground consisting of hard rock through existing embankment and jackstone, boulder bed and riverbed.
Due to interior row's steel sheet pile 3 near water and single steel sheet pile 1 faces soil, the pressure imbalance that single steel sheet pile 1 and interior row's steel sheet pile 3 both sides are suffered, easily cause steel sheet-pile cofferdam unstability, therefore be also provided with outer row's steel sheet pile 2 outside interior row's steel sheet pile 3, make a side near water form double steel sheet pile, and arrange outside between steel sheet pile 2 and interior row's steel sheet pile 3 and also fill packed clay 4, make interior row's steel sheet pile 3 and single steel sheet pile 1 both sides pressure keep balance, to improve resistance to overturning and the safety of steel sheet-pile cofferdam.Simultaneously, between outer row's steel sheet pile 2 and interior row's steel sheet pile 3 also by pull bar 5 is set, outer row's steel sheet pile 2 is connected to form to entirety with interior row's steel sheet pile 3, when being subject under extraneous load action, outer row's steel sheet pile 2 forms cooperative transformation with interior row's steel sheet pile 3, solve the larger problem of steel sheet pile malformation, further strengthen the structural stability of steel sheet-pile cofferdam.
The foundation ditch bottom surrounding at single steel sheet pile 1 and interior row's steel sheet pile 3 is provided with cement mixing pile 8, wherein cement mixing pile 8 is close to and is abutted against single steel sheet pile 1 and arrange with interior row's steel sheet pile 3, the Main Function of cement mixing pile stake 8 is displacements of the single steel sheet pile 1 of constraint and interior row's steel sheet pile 3, reduce steel sheet-pile deformation, further increase the structural stability of steel sheet-pile cofferdam.Build and be formed with a concrete strengthening layer 9 at cement mixing pile 8 tops, wastewater interception pipe or the canal case placed in order to carrying.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken possessing at described technical field those of ordinary skill, can also under the prerequisite that does not depart from the utility model aim, make various variations.

Claims (1)

1. one kind is applicable to the steel sheet pile cofferdam structure in river course, it is characterized in that: comprise the double steel sheet pile of setting near water and the single steel sheet pile that backwater arranges, described double steel sheet pile comprises outer row's steel sheet pile and the interior row's steel sheet pile that spaced and parallel arranges, between described outer row's steel sheet pile and interior row's steel sheet pile, fill packed clay and form operation platform, between described outer row's steel sheet pile and interior row's steel sheet pile, top is connected by a pull bar, described outer row's steel sheet pile is embedded in riverbed, described interior row's steel sheet pile is embedded in ground consisting of hard rock through riverbed, described single steel sheet pile is embedded in ground consisting of hard rock through existing embankment stratum, described single steel sheet pile, the end face that interior row's steel sheet pile contacts with ground consisting of hard rock is provided with argillic horizon, between described single steel sheet pile and interior row's steel sheet pile, be laterally provided with multiple tracks horizontal shore, the foundation ditch bottom surrounding at described single steel sheet pile and interior row's steel sheet pile is provided with cement mixing pile, build and be formed with a concrete strengthening layer at described cement mixing pile top.
CN201420296661.9U 2014-06-05 2014-06-05 A kind of steel sheet pile cofferdam structure that is applicable to river course Active CN203939036U (en)

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Application Number Priority Date Filing Date Title
CN201420296661.9U CN203939036U (en) 2014-06-05 2014-06-05 A kind of steel sheet pile cofferdam structure that is applicable to river course

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109898403A (en) * 2019-04-02 2019-06-18 广州市恒盛建设工程有限公司 The underwater canal case steel suspension bridge of urban rives construction method nested with double steel sheet-pile cofferdam
CN111576458A (en) * 2020-06-02 2020-08-25 浙江交工金筑交通建设有限公司 Inner support-free steel pipe pile cofferdam structure and construction method thereof
CN111851540A (en) * 2020-07-07 2020-10-30 广东珠荣工程设计有限公司 High-rigidity anti-seepage combined cofferdam and construction method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109898403A (en) * 2019-04-02 2019-06-18 广州市恒盛建设工程有限公司 The underwater canal case steel suspension bridge of urban rives construction method nested with double steel sheet-pile cofferdam
CN111576458A (en) * 2020-06-02 2020-08-25 浙江交工金筑交通建设有限公司 Inner support-free steel pipe pile cofferdam structure and construction method thereof
CN111851540A (en) * 2020-07-07 2020-10-30 广东珠荣工程设计有限公司 High-rigidity anti-seepage combined cofferdam and construction method thereof

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C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20160527

Address after: 510060 Guangzhou City, Yuexiu District Province, East Ring Road, No. 348, No.

Patentee after: Guangzhou City Engineering Design studies total institute

Address before: 510060 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District

Patentee before: The grand Project Contracting Co., Ltd in Guangzhou