CN206956707U - It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum - Google Patents

It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum Download PDF

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Publication number
CN206956707U
CN206956707U CN201720737182.XU CN201720737182U CN206956707U CN 206956707 U CN206956707 U CN 206956707U CN 201720737182 U CN201720737182 U CN 201720737182U CN 206956707 U CN206956707 U CN 206956707U
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China
Prior art keywords
ground
bar
water
foundation pit
guard
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CN201720737182.XU
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Chinese (zh)
Inventor
廖正根
郭智峰
何承海
陈旭
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CCCC Second Harbor Engineering Co
CCCC SHEC Fourth Engineering Co Ltd
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CCCC Second Harbor Engineering Co
CCCC SHEC Fourth Engineering Co Ltd
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Abstract

It is used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum the utility model discloses a kind of, the deep foundation pit construction field belonged in urban track traffic construction field and field of bridge construction, including underwater concrete, and the steel reinforcement cage in underwater concrete as skeleton, steel reinforcement cage is made up of some the drag hook muscle and distributing bar set between inside and outside two layers of reinforced mesh and two layers of mesh sheet, each drag hook muscle connects two layers of mesh sheet, distributing bar connects each drag hook muscle, inside and outside two layers of reinforced mesh forms by vertical cage bar and transverse horizontal reinforcing bar, each vertical cage bar is made up of some reinforcing bar bunchy arrangements.The utility model can play the bending resistance, shearing resistance, the ability of antidumping of increase ground-connecting-wall, the effectively thickness of the company's of being thinned wall, so as to reach the purpose for reducing construction total cost, and can increases impervious, the seepage capability of ground-connecting-wall, reduces ground-connecting-wall in Deep Excavation and infiltration, water burst, the risk for gushing sand occurs.

Description

It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum
Technical field
The deep foundation pit construction field that the utility model belongs in urban track traffic construction field and field of bridge construction, especially It is related to a kind of special ground-connecting-wall gone along with sb. to guard him for ultra-deep foundation pit in water-rich sand layer stratum.
Background technology
In city track traffic engineering section ventilating shaft and underground station construction, due to section ventilating shaft and underground station foundation ditch Excavation is deeper, and deep basal pit is located in strong infiltrative water-rich sand layer stratum, and excavation of foundation pit depth is too deep, to ensure that deep basal pit is opened Safety is dug, needs to design special ground-connecting-wall mostly as going along with sb. to guard him water-retaining structure.
In bridge foundation construction, because the embedding depth of cushion cap or cushion cap are located at deeper water, to ensure that cushion cap can be smooth Construction, it also need to design a kind of special ground-connecting-wall in cushion cap surrounding and carry out supporting, dash, so that cushion cap forms dry construction operation bar Part.
When these foundation ditches are located in water-rich sand layer, and cutting depth is more than 25 meters, the design and deep basal pit of ground-connecting-wall are opened Digging difficulty and risk will dramatically increase.Because ground-connecting-wall has larger pressure differential inside and outside digging process, foundation ditch, so cause Larger deformation occurs for building enclosure.Problem be present because ground-connecting-wall designs improper or construction quality, easily produced in digging process Raw water burst, gush husky and basement high, serious meeting causes the outer surface subsidence of foundation ditch, collapses and pipe settlement, fracture, or even can make Collapsed into foundation ditch and tilt, collapse with periphery construction of structures.To ensure excavation of foundation pit safety, then need to ensure that the design of ground-connecting-wall is strong Degree, rigidity and stable sexual satisfaction force request, and the water shutoff of ground-connecting-wall, anti-seepage effect will meet construction requirement.
Utility model content
The purpose of this utility model is:It is proposed that a kind of water-rich sand layer that is used for (is often referred to aqueous profuse water-bearing layer, list Position water yield q >=10L/sm) ultra-deep foundation pit (being often referred to depth more than 25 meters) is gone along with sb. to guard him in stratum ground-connecting-wall, increase can be played The bending resistance of ground-connecting-wall, shearing resistance, the thickness of the ability of antidumping, the effectively company's of being thinned wall, construction total cost is reduced so as to reach Purpose, and can increase ground-connecting-wall impervious, seepage capability, reduce Deep Excavation in ground-connecting-wall occur infiltration, water burst, The risk of sand is gushed, the construction quality of ground-connecting-wall and the excavation safety of deep basal pit is ensured that, deep basal pit can be effectively improved Excavation progress.
The purpose of this utility model is realized by following technical proposals:
It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum, including underwater concrete and underwater mixed Steel reinforcement cage in solidifying soil as skeleton, steel reinforcement cage is by some drag hook muscle for being set between inside and outside two layers of reinforced mesh and two layers of mesh sheet Formed with distributing bar, each drag hook muscle connects two layers of mesh sheet, and distributing bar connects each drag hook muscle, inside and outside two layers of reinforced mesh by Vertical cage bar and transverse horizontal reinforcing bar composition, each vertical cage bar are made up of some reinforcing bar bunchy arrangements.
Alternatively, tie together into that 2 rows 2 arrange or 3 rows 2 arrange arrangement by 4 or 6 reinforcing bars per Shu Shuxiang cage bars.
Alternatively, vertical cage bar uses a diameter of 32~36mm spiral.In the program, cage bar diameter is relatively Greatly.
Alternatively, it is 75~100mm per Shu Shuxiang cage bars clear spacing.In the program, bar spacing is relatively small, reinforcing bar It is intensive.
Alternatively, transverse horizontal bar spacing is 100~150mm.In the program, bar spacing is relatively small, reinforcing bar It is intensive.
Alternatively, rebar ratio is 350~450kg/m in ground-connecting-wall3.In this programme, reinforcing bar arrangement of reinforcement in ground-connecting-wall Rate is of a relatively high.
Alternatively, for concrete using the underwater concrete of the broken microlith of counterattack, intensity is C35 or so.Stone in concrete Particle diameter is relatively small, and particle diameter is 5~10mm.Concrete slump is larger, is 200~240mm.
The foregoing main scheme of the utility model and its each further selection scheme can be with independent assortments to form multiple schemes, The scheme that can be used and be claimed for the utility model;And the utility model, (each non conflicting selection) selection between and Can also independent assortment between other selections.Those skilled in the art are after the present invention program is understood according to prior art and public affairs Know that general knowledge can understand there are multiple combinations, be the claimed technical scheme of the utility model, do not do exhaustion herein.
The beneficial effects of the utility model:
1) ground-connecting-wall bending resistance, bending resistance, resistance to capsizing are strong, and the ground-connecting-wall rigidity of condition of equivalent thickness is bigger.
2) it is large number of because cage bar is intensive in the timing of deep pit digging depth one, cage bar reinforcing bar tension can be given full play to This strong characteristic of ability, can effectively reach the thickness for reducing ground-connecting-wall, so as to reach the quantities and engineering that reduce ground-connecting-wall The purpose of cost.
3) slump is big, good fluidity, is easier to pour into a mould when pouring into a mould concrete closely knit, it is not easy to cause plugging.
4) infiltration, water burst occur during excavation of foundation pit, gushes that husky probability is smaller, and a rate of advance is faster safer.
5) phenomenon of generation leakage muscle is relatively small, and ground-connecting-wall inherent quality and presentation quality are relatively preferable.
6) labour and expense that the modification to ground-connecting-wall, leak stopping are spent greatly reduce.
Brief description of the drawings
Fig. 1 is the facade structures schematic diagram of the utility model embodiment;
In figure, 1 is transverse horizontal reinforcing bar, and 2 be vertical cage bar, and 3 be drag hook muscle, and 4 be distributing bar, and 5 be underwater concrete.
Embodiment
The utility model is further described with reference to specific embodiments and the drawings.
It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum, including underwater concrete with reference to shown in figure 1 Steel reinforcement cage in 5, and underwater concrete 5 as skeleton, new ground-connecting-wall structure have following characteristics:
1) steel reinforcement cage is by some the drag hook muscle 3 and distributing bar 4 that are set between inside and outside two layers of reinforced mesh and two layers of mesh sheet Composition.
2) two layers of reinforced mesh forms by vertical cage bar 2 and transverse horizontal reinforcing bar 1 inside and outside, and each drag hook muscle 3 connects vertically Two layers of mesh sheet, each drag hook muscle 3 of the horizontal connection of distributing bar 4, the vertical diameter of cage bar 2 is relatively large, typically using a diameter of 32~ 36mm spiral.
3) according to stress needs, vertical cage bar 2 can bunchy arrangement, i.e., often Shu Shuxiang cage bars 2 can be by 4 or 6 reinforcing bars Tie together into 2 rows 2 arrange or 3 rows 2 arrange arrangement, to substitute the single cage bar in regular reinforcement cage.
4) bar spacing is relatively small, and reinforcing bar is intensive:It is 75~100mm per the clear spacing of Shu Shuxiang cage bars 2, transverse horizontal steel The spacing of muscle 1 is 100~150mm.
5) rebar ratio is of a relatively high in ground-connecting-wall, up to 350~450kg/m3
6) for underwater concrete 5 using the underwater concrete of the broken microlith of counterattack, intensity is C35 or so.
7) cobble-stone diameter is relatively small, and particle diameter is 5~10mm.
8) slump of underwater concrete 5 is larger, is 200~240mm.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (6)

1. a kind of be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum, it is characterised in that:Including underwater concrete, with And steel reinforcement cage as skeleton in underwater concrete, if steel reinforcement cage between inside and outside two layers of reinforced mesh and two layers of mesh sheet by setting Dry drawing hooked bar and distributing bar composition, each drag hook muscle connect two layers of mesh sheet, and distributing bar connects each drag hook muscle, inside and outside two layers of reinforcing bar Mesh sheet is formed by vertical cage bar and transverse horizontal reinforcing bar, and each vertical cage bar is made up of some reinforcing bar bunchy arrangements.
2. it is used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum as claimed in claim 1, it is characterised in that:Per beam Vertical cage bar is tied together into that 2 rows 2 arrange or 3 rows 2 arrange arrangement by 4 or 6 reinforcing bars.
3. it is used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum as claimed in claim 1, it is characterised in that:Vertically Cage bar uses a diameter of 32~36mm spiral.
4. it is used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum as claimed in claim 1, it is characterised in that:Per beam Vertical cage bar clear spacing is 75~100mm.
5. it is used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum as claimed in claim 1, it is characterised in that:Laterally Horizontal reinforcement spacing is 100~150mm.
6. it is used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum as claimed in claim 1, it is characterised in that:Ground connects Rebar ratio is 350~450kg/m in wall3
CN201720737182.XU 2017-06-22 2017-06-22 It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum Active CN206956707U (en)

Priority Applications (1)

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CN201720737182.XU CN206956707U (en) 2017-06-22 2017-06-22 It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720737182.XU CN206956707U (en) 2017-06-22 2017-06-22 It is a kind of to be used for the ground-connecting-wall that ultra-deep foundation pit is gone along with sb. to guard him in water-rich sand layer stratum

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CN206956707U true CN206956707U (en) 2018-02-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110295602A (en) * 2019-04-24 2019-10-01 浙江省钱塘江管理局勘测设计院 A kind of underwater concrete pouring technique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110295602A (en) * 2019-04-24 2019-10-01 浙江省钱塘江管理局勘测设计院 A kind of underwater concrete pouring technique

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