CN106284296B - Supporting structure of double-row steel sheet piles and construction method thereof - Google Patents
Supporting structure of double-row steel sheet piles and construction method thereof Download PDFInfo
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- CN106284296B CN106284296B CN201610877630.6A CN201610877630A CN106284296B CN 106284296 B CN106284296 B CN 106284296B CN 201610877630 A CN201610877630 A CN 201610877630A CN 106284296 B CN106284296 B CN 106284296B
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- 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
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- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/16—Auxiliary devices rigidly or detachably arranged on sheet piles for facilitating assembly
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
本发明公开了一种双排钢板桩的支护结构及其施工方法，支护结构包括前排钢板桩、后排钢板桩、围檩、卡槽、连系梁、螺栓。所述围檩将每排的钢板桩连接成一整体，所述卡槽卡入钢板桩桩顶，所述连系梁的端部与卡槽对齐，钢板桩、卡槽、连系梁均留有螺栓孔并由螺栓一次性固定。施工方法为：首先打入前后排钢板桩并搭设围檩，然后卡入卡槽、固定连系梁，之后对排桩间土体和基坑进行降水，最后基坑开挖并施工地下结构等。本发明的钢结构可回收利用，通过固定连系梁使得前后排桩桩顶变形相协调，通过对排桩间土体的降水，大大减小了前排钢板桩的水平受力，加大了渗流路径，增加了基坑开挖的安全性，降低了施工成本。
The invention discloses a double-row steel sheet pile supporting structure and a construction method thereof. The supporting structure comprises a front row of steel sheet piles, a rear row of steel sheet piles, purlins, clamping grooves, connecting beams and bolts. The purlin connects the steel sheet piles of each row into a whole, the clipping groove is inserted into the top of the steel sheet pile, the end of the connecting beam is aligned with the clipping slot, and the steel sheet pile, clipping slot and connecting beam are all left with Bolt holes and one-time fixation by bolts. The construction method is as follows: firstly drive the front and rear rows of steel sheet piles and set up the surrounding purlins, then insert the clip grooves and fix the connecting beams, then dewater the soil and foundation pits between the rows of piles, and finally excavate the foundation pits and construct the underground structure, etc. . The steel structure of the invention can be recycled, and the deformation of the front and rear rows of piles can be coordinated by fixing the connecting beams. The seepage path increases the safety of foundation pit excavation and reduces the construction cost.
Description
Technical field
The present invention relates to the technical fields of geotechnical engineering, are to be related to a kind of supporting knot of double steel sheet pile more specifically
Structure and its construction method.
Background technique
With the development of China's skyscraper, traditional single supporting construction cannot better meet engine request, double
Campshed building enclosure is widely applied in base pit engineering because it is with preferable implementation and achieves good economy, society
It can benefit.General double-row pile mostly uses cast-in-situ bored pile, and cast-in-situ bored pile is with bearing capacity is big, stability is good, settling amount is small
The advantages of, but there is also complex process, the problems such as mud rubbish is more, and cost is higher.A large amount of case history and theory
The rigid connection of analytical proof, campshed stake top is more more reasonable than connectionless, at present there are many connection types of campshed stake top, but
The less stake top connectivity problem for relating to double steel sheet pile.Sealing gear can be effectively played by setting steel sheet pile around foundation pit
The effect of soil can extract steel sheet pile after foundation pit construction to reduce construction cost, however steel sheet pile supporting belong to it is soft
Property supporting, when excavation of foundation pit is deeper, steel sheet-pile deformation can be larger, and setting double steel sheet pile although can reduce Support Deformation, but
It is the percolation path of level of ground water still along front-seat steel sheet pile, the solution still not yet in effect of the seepage deformation problem of foundation pit.
Summary of the invention
The purpose of the present invention is in view of the above shortcomings of the prior art, provide a kind of supporting construction of double steel sheet pile and its
Construction method is become with solving foundation pit seepage deformation caused by the stake top connectivity problem and excavation of foundation pit of double steel sheet pile and steel sheet pile
The problem of shape.
To achieve the above object, the technical solution adopted by the present invention are as follows: a kind of supporting construction of double steel sheet pile, including it is preceding
Arrange steel sheet pile, heel row steel sheet pile, purlin, card slot, linking beam, bolt, it is characterised in that: the purlin connects the steel sheet pile of every row
It is connected into an entirety, the card slot is caught at front and rear row steel plate stake top straight panel, and the end of the linking beam is aligned with card slot, steel
Sheet pile, card slot, linking beam are one-time fixed there are bolt hole and by bolt.
Preferably, the purlin using double Pin, is arranged in every row's steel sheet pile close to foundation pit side and slightly above ground.
Preferably, the card slot is U-shaped structure, two interplanar distance of front and back and thickness at the straight panel of institute steel-fastening sheet pile are identical simultaneously
And front and back two sides is respectively arranged symmetrically four bolts hole.
Preferably, the front row steel sheet pile, heel row steel sheet pile are U-shaped Larsen steel sheet pile, it is disposed at stake top straight panel
Four bolts hole, steel sheet pile basset 0.5m.
Preferably, the linking beam both ends are welded with one block of steel plate, there are four bolts hole for arrangement on steel plate.
Preferably, the bolt hole of the bolt hole of the steel plate stake top, card slot and the bolt hole hole location on linking beam
It corresponds, and can be one-time fixed by the bolt hole that bolt passes through three.
A kind of construction method of supporting construction based on double steel sheet pile, comprising the following steps:
Step 1: the long model of front and rear row steel sheet pile, stake, array pitch, construction depth are determined according to place and design requirement,
Select suitable purlin, card slot, linking beam model and position；
Step 2: squeezing into front and rear row steel sheet pile and setting up purlin；
Step 3: stake top card slot is caught in, so that card slot bolt hole is overlapped with steel sheet pile bolt hole；
Step 4: fixed linking beam, is directed at card slot bolt hole for linking beam bolt hole, by screw bolt by steel sheet pile,
Card slot, linking beam are fixed；
Step 5: carrying out precipitation to front and rear row inter-pile soil body, inter-pile soil body water level is not less than hole bottom water position；
Step 6: carrying out precipitation to foundation pit, hole bottom water position meets design requirement；
Step 7: excavation of foundation pit and underground structure of constructing；
Step 8: Underground Construction goes out terrace, after the gap between structure and foundation pit crater wall is backfilling and compacted, recycling is enclosed
Purlin, card slot, linking beam simultaneously extract steel sheet pile.
The beneficial effects of the present invention are:
1, stake top connection structure of the invention coordinates steel plate stake top deformation in front and back mutually.
2, between campshed of the invention the soil body precipitation, reduce the horizontal force of front-seat steel sheet pile, make percolation path by edge
Front-seat steel sheet pile reach foundation pit bottom and increase then to pass through soil body arrival base between the steel sheet pile stake bottom of front and back via heel row steel sheet pile
Bottom is cheated, thus reduces Support Deformation and seepage flow deformation, improves the safety of excavation of foundation pit.
3, a kind of supporting construction of double steel sheet pile of the invention can the factorial production, the construction period is short, low cost, safety
Property it is high, structure is can be recycled.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the double steel sheet pile of the present invention.
Fig. 2 is the connection schematic diagram between structure of the invention.
Fig. 3 is the precipitation schematic diagram of the double steel sheet pile of the present invention.
In figure: 1, front-seat steel sheet pile, 2, heel row steel sheet pile, 3, purlin, 4, card slot, 5, linking beam, 6, bolt, 7, underground water
Position, 8, inter-pile soil body water level, 9, hole bottom water position, 10, foundation pit bottom, 11, ground.
Specific embodiment
Embodiment is joined as shown in figure 1 to 3: a kind of supporting construction of double steel sheet pile, including front-seat steel sheet pile 1, heel row steel plate
Stake 2, purlin 3, card slot 4, linking beam 5, bolt 6, it is characterised in that: the purlin 3 by the steel sheet pile of every row connect into one it is whole
Body, the card slot 4 are respectively clamped into front-seat steel sheet pile 1, at 2 stake top straight panel of heel row steel sheet pile, the end of the linking beam 5 and card slot
4 alignment, front-seat steel sheet pile 1, heel row steel sheet pile 2, card slot 4, linking beam 5 are one-time fixed there are bolt hole and by bolt 6.
The purlin 3 is arranged in every row's steel sheet pile close to foundation pit side and slightly above ground 11 using double Pin.
The card slot 4 is U-shaped structure, and two interplanar distance of front and back and the thickness at the steel sheet pile straight panel of institute Ka Chu are identical and preceding
Two sides is respectively arranged symmetrically four bolts hole afterwards.
The front row steel sheet pile 1, heel row steel sheet pile 2 are U-shaped Larsen steel sheet pile, and every campshed passes through lock with stake and mutually takes
It connects, there are four bolts hole for arrangement at stake top straight panel.
5 both ends of linking beam are welded with one block of steel plate, and there are four bolts hole for arrangement on steel plate.
The front row steel sheet pile 1 or the bolt hole of 2 stake top of heel row steel sheet pile, card slot 4 bolt hole and linking beam 5 on
Bolt hole hole location corresponds, and can be one-time fixed by the bolt hole that bolt 6 passes through three.
A kind of construction method of supporting construction based on double steel sheet pile, comprising the following steps:
Step 1: determining that front row steel sheet pile 1, the model of heel row steel sheet pile 2, stake is long, arranges according to place and design requirement
Away from selecting suitable purlin 3, card slot 4,5 model of linking beam and position；
Step 2: squeezing into front-seat steel sheet pile 1, heel row steel sheet pile 2 respectively and setting up corresponding purlin 3, it is ensured that stake top compares
Ground 11 is higher by 0.5m, and purlin 3 is disposed adjacent at ground 11, and guarantees two stake top of front and back in the same horizontal line；
Step 2: being caught in stake top card slot 4, two card slots 4 are respectively clamped into symmetrical front-seat steel sheet pile 1, heel row steel plate
At 2 stake top straight panels of stake, so that the bolt hole of card slot 4 and the steel sheet pile bolt hole of institute card position coincide；
Step 3: fixed linking beam 5, is respectively aligned to front-seat steel sheet pile 1, heel row steel plate for the bolt hole at 5 both ends of linking beam
The bolt hole of 2 stake top card slots 4 of stake, it is by screwing bolt 6 that front-seat steel sheet pile 1, heel row steel sheet pile 2, card slot 4, linking beam 5 is fixed
It is integral；
Step 4: the level of ground water 7 of the soil body between campshed is reduced, so that inter-pile soil body water level 8 is not low by setting dewatering well
In hole bottom water position 9；
Step 5: reducing the level of ground water 7 of foundation pit position by setting dewatering well, set so that hole bottom water position 9 meets
Meter requires；
Step 6: excavation of foundation pit is to foundation pit bottom 10 and underground structure of constructing；
Step 7: Underground Construction goes out terrace, after the gap between structure and foundation pit crater wall is backfilling and compacted, purlin is recycled
3, card slot 4, linking beam 5 and front-seat steel sheet pile 1, heel row steel sheet pile 2 are extracted.
It should be pointed out that made by a specific embodiment of the invention detailed description can not be used to limit it is of the invention
Protection scope, those skilled in the art's made any change under the inspiration of the present invention, when not departing from the present invention
Principle and claim when, all belong to the scope of protection of the present invention.
Claims (2)
1. a kind of supporting construction of double steel sheet pile, including front-seat steel sheet pile, heel row steel sheet pile, purlin, card slot, linking beam, spiral shell
Bolt, it is characterised in that: the steel sheet pile of every row is connected into an entirety by the purlin, and the card slot is caught in steel plate stake top straight panel
Place, the end of the linking beam are aligned with card slot, and steel sheet pile, card slot, linking beam are there are bolt hole and disposably solid by bolt
Fixed, the purlin is arranged in every row's steel sheet pile close to foundation pit side and slightly above ground, the card slot is U-shaped knot using double Pin
Structure, two interplanar distance of front and back is identical as thickness at the straight panel of institute steel-fastening sheet pile and front and back two sides is respectively arranged symmetrically four bolts hole,
The front row steel sheet pile, heel row steel sheet pile are U-shaped Larsen steel sheet pile, and there are four bolt hole, steel sheet piles for arrangement at stake top straight panel
Basset 0.5m, and the linking beam both ends are welded with one block of steel plate, and there are four bolt hole, the steel sheet pile stakes for arrangement on steel plate
Bolt hole hole location on the bolt hole on top, the bolt hole of card slot and linking beam corresponds, and can pass through three's by bolt
Bolt hole one-time fixes；On the basis of gap between the front-seat steel sheet pile and heel row steel sheet pile, the front row steel sheet pile
" protrusion " on the outside of the gap is all had with heel row steel sheet pile and to " recess " on the inside of the gap, wherein each
" protrusion " each corresponding described heel row steel sheet pile of the front row steel sheet pile is corresponding " recess ", each described front-seat steel plate
Each corresponding described heel row steel sheet pile of " recess " of stake is corresponding " protrusion "；" protrusion " of each front-seat steel sheet pile and
" recess " of its each corresponding heel row steel sheet pile is connected by linking beam, each front-seat steel sheet pile
" protrusion " of each corresponding described heel row steel sheet pile of " recess " is connected by linking beam, and described in adjacent two
" protrusion " of the linking beam one connection front-seat steel sheet pile and the heel row steel sheet pile are corresponding " recess ", another connection institute
" recess " and the heel row steel sheet pile for stating front-seat steel sheet pile are corresponding " protrusion ".
2. based on a kind of construction method of the supporting construction of double steel sheet pile described in claim 1, it is characterised in that: including with
Lower step:
Step 1: determining the long model of front and rear row steel sheet pile, stake, array pitch, construction depth according to place and design requirement, select
Suitable purlin, card slot, linking beam model and position；
Step 2: squeezing into front and rear row steel sheet pile and setting up purlin；
Step 3: stake top card slot is caught in, so that card slot bolt hole is overlapped with steel sheet pile bolt hole；
Step 4: fixed linking beam, is directed at card slot bolt hole for linking beam bolt hole, by screw bolt by steel sheet pile, card slot,
Linking beam is fixed；
Step 5: carrying out precipitation to front and rear row inter-pile soil body, inter-pile soil body water level is not less than hole bottom water position；
Step 6: carrying out precipitation to foundation pit, hole bottom water position meets design requirement；
Step 7: excavation of foundation pit and underground structure of constructing；
Step 8: Underground Construction goes out terrace, and after the gap between structure and foundation pit crater wall is backfilling and compacted, recycling purlin, card
Slot, linking beam simultaneously extract steel sheet pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610877630.6A CN106284296B (en) | 2016-09-28 | 2016-09-28 | Supporting structure of double-row steel sheet piles and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610877630.6A CN106284296B (en) | 2016-09-28 | 2016-09-28 | Supporting structure of double-row steel sheet piles and construction method thereof |
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| CN106284296A CN106284296A (en) | 2017-01-04 |
| CN106284296B true CN106284296B (en) | 2019-04-23 |
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| CN201883438U (en) * | 2010-12-23 | 2011-06-29 | 东南大学 | Pit-in-foundation-pit steel sheet pile foundation pit supporting structure |
| JP5772658B2 (en) * | 2012-02-27 | 2015-09-02 | 新日鐵住金株式会社 | Hat-type steel sheet piles and structures using hat-type steel sheet piles |
| CN202559362U (en) * | 2012-04-09 | 2012-11-28 | 东南大学 | Double-row steel sheet pile and H-steel section combined foundation pit supporting structure |
| CN103669375A (en) * | 2013-12-27 | 2014-03-26 | 张安政 | Double-layer steel sheet pile soil core composite cofferdam structure without inner support and application thereof |
| CN103758134B (en) * | 2014-01-24 | 2015-09-30 | 中国建筑股份有限公司 | A kind of construction method combining Double-row Piles Support system |
| CN204311459U (en) * | 2014-11-13 | 2015-05-06 | 常州大学 | Oblique double soldier pile body structure before chair shape |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116537206A (en) * | 2023-05-05 | 2023-08-04 | 中建一局集团第五建筑有限公司 | Prestressed connection double-layer Larson steel sheet pile supporting structure and construction method |
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