CN1837512B - Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same - Google Patents
Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same Download PDFInfo
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- CN1837512B CN1837512B CN200610025535XA CN200610025535A CN1837512B CN 1837512 B CN1837512 B CN 1837512B CN 200610025535X A CN200610025535X A CN 200610025535XA CN 200610025535 A CN200610025535 A CN 200610025535A CN 1837512 B CN1837512 B CN 1837512B
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Abstract
The invention discloses a steel plate-tube post combined cofferdam and relative method, which is characterized in that: at least one steel plate post is arranged between two steel tube posts; and nearby steel plate and tube posts are connected by grooves; the depths of steel tube and plate posts are the same. The invention can combine the properties of steel plate and tube posts, to solve the waterproof problem. It can reduce the material consumption and the working time, with better economic benefits.
Description
Technical field:
The present invention relates to foundation ditch sealing in the subaqueous work process and go along with sb. to guard him the large-scale civil material of aspect, particularly a kind of steel sheet pile and steel pipe pile combined cofferdam.
Background technology:
For excavation of foundation pit in the water, the protection of safe foundation ditch specifically should be arranged, promptly around foundation ditch, build the cofferdam, so that draining, dig base and build foundation construction by laying bricks or stones.Coffering mainly should be considered the requirement of stable and antiseepage.The type in cofferdam commonly used has: earth fill cofferdam, straw bag cofferdam, wood sheet-pile cofferdam, steel cofferdam and steel concrete cofferdam etc.The base pit engineering that the safe class of constructing in deep water is higher, relatively stricter to the stability and the barrier properties requirement in cofferdam.Steel cofferdam since advantage such as self rigidity is bigger, and barrier properties is good, and the scope of application is wider in engineering, be widely used.Steel cofferdam generally comprises forms such as steel sheet pile, steel pipe pile.Steel sheet pile has stable material quality, reliable in quality, speed of application is fast in soft layer, technology is also simpler, and have dash preferably, and can extract repeated use as the steel sheet pile of temporary structure, reduce advantages such as construction costs, but it is less to exist rigidity, is out of shape shortcomings such as very big under the lateral pressure effect.Steel pipe pile rigidity is very big, not yielding, but is difficult to guarantee in the construction of the stagnant water effect of interface between steel pipe pile and the steel pipe pile.
Summary of the invention:
An object of the present invention is to provide a kind of steel sheet pile and steel pipe pile combined cofferdam that can overcome above defective.
To achieve these goals, technical scheme of the present invention is: a kind of steel sheet pile and steel pipe pile combined cofferdam, it is characterized in that being provided with between two steel pipe piles a slice steel sheet pile at least, connect by tongue and groove between adjacent steel sheet pile and the steel pipe pile, the length of steel pipe pile and steel sheet pile is consistent, length is 10～50m, and the pile sinking degree of depth of steel pipe pile and steel sheet pile is consistent, and the pile sinking degree of depth is 5m～40m.Between two steel pipe piles 1～3 steel sheet pile can be set.
Another object of the present invention provides a kind of steel sheet pile and steel pipe pile combined cofferdam preparation method that can overcome above defective.
To achieve these goals, technical scheme of the present invention is: a kind of steel sheet pile and steel pipe pile combined cofferdam preparation method is characterized in that it may further comprise the steps: A, set up workbench, clear up water-bed obstruction, and with the leveling of position, cofferdam, riverbed, leveling back ground inclination degree is not more than 0.5%; B, alternately lift steel pipe pile and steel sheet pile, and connect the location with tongue and groove, 1～3 steel sheet pile is set between two adjacent steel pipe piles, the length of steel pipe pile and steel sheet pile is consistent, and length is 10～50m; C, utilize pile driving equipment that it is sunk to the riverbed, the pile sinking degree of depth of steel pipe pile and steel sheet pile is consistent, and the pile sinking degree of depth is 5m～40m.
The present invention is linked together with steel pipe pile and steel sheet pile, cofferdam structure and foundation pit enclosure structure are combined, both solved the sealing problem in the subaqueous work, the problem of Extra-Deep Foundation Pit under water is provided again, economical with materials, reduced the workload of the cofferdam scope and the cubic metre of earth and stone, easy construction, it is reasonable more economically to add the pattern foundation pit supporting structure form than other cofferdam.
Description of drawings:
Fig. 1 is the floor map of structure according to an embodiment of the invention
Fig. 2 is the floor map of structure according to another embodiment of the present invention
Fig. 3 is the structural representation of steel sheet pile
Fig. 4 is the structural representation of steel pipe pile
The specific embodiment:
Below in conjunction with drawings and Examples the present invention is further described.
A kind of steel sheet pile and steel pipe pile combined cofferdam, it is characterized in that being provided with between two steel pipe piles 1 a slice steel sheet pile 2 at least, connect by tongue and groove between adjacent steel sheet pile 2 and the steel pipe pile 1, steel pipe pile 1 is consistent with the length of steel sheet pile 2, length is 10～50m, the pile sinking degree of depth of steel pipe pile 1 and steel sheet pile 2 is consistent, and the pile sinking degree of depth is 5m～40m.The specification of the steel pipe pile 1 that the present invention adopts is that (diameter/mm), the specification of steel sheet pile 2 is III number (400 * 150 * 13.1) or IV number (400 * 170 * 15.5) steel sheet pile to φ 400～φ 1500, and the structure of steel pipe pile 1 and steel sheet pile 2 as shown in Figure 3 and Figure 4.Between adjacent two steel pipe piles 1 of the present invention 1～3 steel sheet pile 2 can be set, so the center distance of adjacent two steel pipe piles 1 is between 800mm～2700mm.Steel pipe pile 1 both sides are provided with steel pipe pile tongue and groove 4, steel sheet pile 2 both sides are provided with steel sheet pile tongue and groove 3, be connected with steel pipe pile tongue and groove 4 by steel sheet pile tongue and groove 3 between adjacent steel pipe pile 1 and the steel sheet pile 2, the steel sheet pile tongue and groove 3 that passes through between two adjacent steel sheet piles 2 separately connects.Steel sheet pile 2 is consistent with the steel pipe pile 1 pile sinking degree of depth, all to reach the impervious projected depth in cofferdam, require to calculate the impervious projected depth in cofferdam according to the foundation ditch antiseepage, concrete grammar see " basic design specification of the foundation " (DGJ08-11-1999), " base pit engineering design discipline " (DGJ08-61-97).
Steel sheet pile tongue and groove 3 outsides are provided with a connection and collude part, and steel pipe pile tongue and groove 4 outsides also are provided with a connection in steel sheet pile tongue and groove 3 and collude the part that colludes that part matches, so steel sheet pile tongue and groove 3 not only can be connected with steel sheet pile tongue and groove 3, also can be connected with steel pipe pile tongue and groove 4.
A kind of steel sheet pile and steel pipe pile combined cofferdam preparation method is characterized in that it may further comprise the steps: A, set up workbench, clear up water-bed obstruction, with the leveling of position, cofferdam, riverbed, leveling back ground inclination degree is not more than 0.5%; B, alternately lift steel pipe pile 1 and steel sheet pile 2, and connect the location with tongue and groove, 1～3 steel sheet pile 2 is set between two steel pipe piles 1, steel pipe pile 1 is consistent with the length of steel sheet pile 2, and length is 10～50m; C, utilize pile driving equipment that it is sunk to the riverbed, the pile sinking degree of depth of steel pipe pile 1 and steel sheet pile 2 is consistent, and the pile sinking degree of depth is 5m～40m.The method pile sinking that the cofferdam of land part adopts land driver to squeeze into, the stake of above-water cofferdam is then adopted by loop wheel machine on the barge and is hung the method pile sinking that vibrating hammer is squeezed into, hammer is heavy should not should to have the horizontal restrain device to prevent horizontal unstability greater than 4.5t (diesel hammer) before the pile frame in the hammering process.Pile driving process will carry out the repeatedly measurement of absolute altitude, plan-position, gradient etc., the pile sinking degree of depth of steel pipe pile 1 and steel sheet pile 2 is consistent, promptly pushes up end absolute altitude unanimity, and the high allowable variation of stake top mark is-50～100mm, pile sinking plan-position allowable variation is 150mm, and the pile sinking gradient is not more than 1%.
Case history: open excavation in certain river, the dark 5m of river, excavation of foundation pit degree of depth 10m under the riverbed, foundation ditch overall circumference 500m.Adopt the present invention as water-retaining cofferdam double as excavation supporting structure.Form combined cofferdam with Φ 800 tongue and groove steel pipe piles and III steel sheet pile (400 * 150 * 13.1), the long 32m of stake, the pile sinking degree of depth is 22m.According to " basic design specification of the foundation " (DGJ08-11-1999), " base pit engineering design discipline " (DGJ08-61-97) carry out stability checking computations to cofferdam structure, the result is as follows:
(a) resistance to overturning K
RS=1.6＞1.2
(b) topple and sliding stability
K
a＝1.38＞1.3；K
C＝7.42＞1.3
(c) swell stable K
h=3.07＞1.3
(d) analysis of seepage flow stability K
RW=1.38＞1.2
(e) sand is pressed in anti-piping checking computations, safety coefficient K=1.629,
Press clay, safety coefficient K=2.443
(f) cofferdam maximum horizontal distortion 17.9mm＜30mm.
More than checking computations all meet design requirement.
This engineering is used III steel sheet pile (400 * 150 * 13.1) if adopt the conventional steel plates pile cofferdam, long 40m, and the pile sinking degree of depth is 30m, adds up to steel using amount 7532.5t.This engineering is used Φ 800 tongue and groove steel pipe piles if adopt the conventional steel pile cofferdam, long 30m, and the pile sinking degree of depth is 20m, adds up to steel using amount 6026t.In this case history, the present invention adds up to steel using amount 5785t, is respectively 75.8% and 96% of conventional steel plates pile cofferdam and steel pipe pile cofferdam steel using amount.Because the present invention links to each other steel pipe pile at interval with steel sheet pile, utilize steel pipe pile to improve the integral rigidity in cofferdam, utilize the distortion between coordinating of the flexibility of steel sheet pile, guaranteed the rigidity and the stagnant water effect in cofferdam better.
Claims (3)
1. steel sheet pile and steel pipe pile combined cofferdam, it is characterized in that being provided with between two steel pipe piles a slice steel sheet pile at least, connect by tongue and groove between adjacent steel sheet pile and the steel pipe pile, the steel sheet pile tongue and groove outside is provided with a connection and colludes part, the steel pipe pile tongue and groove outside also be provided with one with collude the part that colludes that part matches being connected of steel sheet pile tongue and groove, the length overall of steel pipe pile and steel sheet pile is consistent, is 10～50m, the pile sinking degree of depth of steel pipe pile and steel sheet pile is consistent, and the pile sinking degree of depth is 5m～40m.
2. steel sheet pile as claimed in claim 1 and steel pipe pile combined cofferdam is characterized in that being provided with between two adjacent steel pipe piles 1～3 steel sheet pile.
3. steel sheet pile and steel pipe pile combined cofferdam preparation method is characterized in that it may further comprise the steps: A, set up workbench, clear up water-bed obstruction, and with the leveling of position, cofferdam, riverbed, leveling back ground inclination degree is not more than 0.5%; B, alternately lift steel pipe pile and steel sheet pile, and connect the location with tongue and groove, 1～3 steel sheet pile is set between two adjacent steel pipe piles, the length of steel pipe pile and steel sheet pile is consistent, and length is 10～50m; C, utilize pile driving equipment that it is sunk to the riverbed, the pile sinking degree of depth of steel pipe pile and steel sheet pile is consistent, and the pile sinking degree of depth is 5m～40m, and the high allowable variation of stake top mark of steel pipe pile and steel sheet pile is-50～100mm, pile sinking plan-position allowable variation is 150mm, and the pile sinking gradient is not more than 1%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610025535XA CN1837512B (en) | 2006-04-07 | 2006-04-07 | Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610025535XA CN1837512B (en) | 2006-04-07 | 2006-04-07 | Combined cofferdam of steel slab pile and steel pipe pile an method for manufacturing the same |
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|---|---|
| CN1837512A CN1837512A (en) | 2006-09-27 |
| CN1837512B true CN1837512B (en) | 2011-04-20 |
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| CN101597904B (en) * | 2009-07-03 | 2013-02-27 | 东南大学 | Waterproof sheet pile cofferdam and construction method thereof |
| JP5284249B2 (en) * | 2009-11-30 | 2013-09-11 | 新日鐵住金株式会社 | Steel pipe sheet pile joint structure and steel pipe sheet pile foundation |
| WO2011125347A1 (en) * | 2010-04-01 | 2011-10-13 | 住友金属工業株式会社 | Connected wall structure consisting of steel pipe sheet piles and steel sheet pile, and method of constructing same |
| WO2011142047A1 (en) * | 2010-05-10 | 2011-11-17 | 住友金属工業株式会社 | Steel wall and method for constructing steel wall |
| CN102477735A (en) * | 2010-11-25 | 2012-05-30 | 中铁十八局集团有限公司 | Steel pipe pile for rectangular pier cofferdam |
| CN102182176B (en) * | 2010-12-20 | 2012-12-19 | 陈健雄 | Cast-in-place concrete tube-sheet pile, piling device and piling construction method thereof |
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| CN106368216B (en) * | 2015-07-20 | 2018-04-03 | 上海思珂润机电有限公司 | The construction method that a kind of steel sheet pile precisely closes |
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