CN105239591A - Steel pipe driven pile foundation with steel boxed cofferdam and dual bearing platforms, and construction method of foundation - Google Patents
Steel pipe driven pile foundation with steel boxed cofferdam and dual bearing platforms, and construction method of foundation Download PDFInfo
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- CN105239591A CN105239591A CN201510628901.XA CN201510628901A CN105239591A CN 105239591 A CN105239591 A CN 105239591A CN 201510628901 A CN201510628901 A CN 201510628901A CN 105239591 A CN105239591 A CN 105239591A
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Abstract
The invention relates to a steel pipe driven pile foundation with a steel boxed cofferdam and dual bearing platforms, and a construction method of the foundation. The upper part of the foundation is the steel boxed cofferdam, the lower part of the foundation is a steel pipe driven pile foundation body, and the steel boxed cofferdam and the steel pipe driven pile foundation body are fixedly connected through the lower bearing platform. The upper bearing platform and a pier base are arranged on the steel boxed cofferdam. A thin-wall shell of the steel boxed cofferdam is filled with concrete, and the bottom of the steel boxed cofferdam is filled with subsealing concrete. The construction method includes the steps that a steel pipe pile is driven into a pier location stratum, the steel boxed cofferdam obtained through manufacturing is transported to the pier location, is positioned accurately and sinks for implantation by injecting water, then pouring of the subsealing concrete of the steel boxed cofferdam and concrete filling in the steel shell are performed, water in the steel boxed cofferdam is pumped out, and the lower and upper bearing platforms are constructed on the water-free condition. The foundation can resist horizontal loads, avoid risks of the sinking construction and shorten the construction period, and is low in manufacturing price, high in efficiency and reliable in quality. The foundation is applicable to bridge foundations and electric tower foundations built in oceans or rivers with large water depth and strong scouring, and can effectively reduce the current force and river-bed scouring.
Description
Technical field
The present invention relates to a kind of new type of deep-water foundation structure form and construction method thereof, be specifically related to the two cushion cap steel pipe Driven-in Pile Foundations of a kind of steel boxed cofferdam and construction method thereof.
Background technology
The design and construction of deep water foundation is the difficult point of engineering circles all the time, conventional deep water foundation form has pile foundation and open caisson foundation, when the depth of water is darker, the drift of stake will increase, pile body is stressed very unfavorable, the electric tower foundation less for vertical load especially, horizontal loading is very large, just more unfavorable, can only overcome with increase stake number, cause the increase of construction costs; But after stake number increases, basic current obstruction area increases, and drag force and bed scour also strengthen, and produce new unfavorable factor to structure simultaneously.Open caisson foundation is also conventional deep water foundation form, but when geological conditions is poor, when bearing stratum buried depth is darker, open caisson foundation must sink very dark, and difficulty of construction is large, long in time limit.
In view of current existing deep water foundation form, not being well positioned to meet the requirement of engineering reality, in order to solve this difficult problem, needing to carry out innovative design to deep water foundation form.
Summary of the invention
The object of the invention is for above-mentioned present situation, aim to provide the drift that can reduce pile foundation, drag force and bed scour can be reduced again, reduce steel boxed cofferdam submergence depth simultaneously and improve the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam and the construction method thereof that basic anti-ship hits ability.
The implementation of object of the present invention is, the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam, basis point upper and lower two parts, and top is divided into steel boxed cofferdam, and bottom is divided into steel pipe Driven-in Pile Foundations; Elevation residing for the steel pipe pile pile crown of described steel pipe Driven-in Pile Foundations is face, riverbed place; The steel pipe pile pile crown of upper part steel boxed cofferdam and lower part is consolidated by lower cushion cap; Steel boxed cofferdam there is upper cushion cap, upper cushion cap has tower seat or pier base; Described steel boxed cofferdam in steel boxed cofferdam thin wall, is filled with concrete, the cofferdam that underfill has bottom concrete to be formed.
The construction method of the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam, concrete steps are:
1) in stratum, pier position, squeeze into steel pipe pile, innermost ring steel pipe pile is Vertical Pile, and remaining is oblique stake, and elevation residing for pile crown is face, riverbed place;
2) after steel pipe pile has been constructed, by the steel boxed cofferdam manufactured, transportation by driving is to basic engineering pier position place, and after accurately locating with steel pipe pile multi-column pier foundation center, water filling sinking implantation, guarantees that steel boxed cofferdam by steel pipe pile pile crown cover within it;
3) build cofferdam bottom concrete at steel boxed cofferdam bottom pour mold, fill steel boxed cofferdam shell inner concrete;
4) extract the water in steel boxed cofferdam out, the lower cushion cap of construction, guarantees that steel pipe pile and steel boxed cofferdam are connected firmly in anhydrous conditions;
5) the upper cushion cap of finally construction, forms the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam.
The present invention has following advantage:
1, steel pipe pile is taper pile, is conducive to resisting horizontal loading; Steel boxed cofferdam reduces the drift of steel pipe pile, and both learn from other's strong points to offset one's weaknesses, and brings out the best in each other;
2, normal dia steel pipe pile Construction of Driven Pile technology maturation, efficiency is high, reliable in quality, saves the duration;
3, steel boxed cofferdam submergence depth can be reduced, avoid sinking construction risk, and steel boxed cofferdam factory manufactures, with steel pipe pile driven pile synchronous construction, can reduction of erection time greatly, save construction costs.
The present invention be applicable to the depth of water comparatively dark, wash away the bridge foundation and electric tower foundation built in larger ocean, river environment, can effectively reduce drag force, channel scour.
Accompanying drawing explanation
Fig. 1 is shape assumption diagram of the present invention,
Fig. 2 is the C-C direction view of Fig. 1,
Fig. 3 is A-A direction view of Fig. 1, Fig. 2,
Fig. 4 is B-B direction view of Fig. 1, Fig. 2,
Fig. 5 is D-D direction view of Fig. 1.
Detailed description of the invention
With reference to the accompanying drawings in detail the present invention is described in detail.
With reference to Fig. 1,2,3,4,5, the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam of the present invention divides upper and lower two parts, and top is divided into steel boxed cofferdam 2, and bottom is divided into steel pipe Driven-in Pile Foundations 6; Elevation residing for the steel pipe pile pile crown of described steel pipe Driven-in Pile Foundations is face, riverbed place; The steel pipe pile pile crown of upper part and lower part is consolidated by lower cushion cap 4.Steel boxed cofferdam there is upper cushion cap 1, upper cushion cap has tower seat or pier base 7.Upper cushion cap 1 is concrete structure, can improve the durability of structure.
Described steel boxed cofferdam is filled with concrete in steel boxed cofferdam thin wall, the cofferdam that underfill has bottom concrete 5 to be formed.Be filled with concrete in steel boxed cofferdam thin wall, basic anti-ship can be improved and hit ability.
Steel pipe driven pile 6 plane presses annulus layout, quincuncial arrangement or rectangular arrangement; Innermost ring steel pipe pile 6 is Vertical Pile, for location and supporting steel precast-boxed cofferdam.All the other are for being in tilted layout, and can resist powerful horizontal loading preferably.
Steel boxed cofferdam 2 planar design is circular, nose circle shape or ellipse, and circular cross-section can reduce the active force of current to basis to greatest extent, reduces bed scour.
The construction method of the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam, concrete steps are:
1) in stratum, pier position, squeeze into steel pipe pile, innermost ring steel pipe pile is Vertical Pile, and remaining is oblique stake, and elevation residing for pile crown is face, riverbed place;
2) after steel pipe pile has been constructed, by the steel boxed cofferdam manufactured, transportation by driving is to basic engineering pier position place, and after accurately locating with steel pipe pile multi-column pier foundation center, water filling sinking implantation, guarantees that steel boxed cofferdam by steel pipe pile pile crown cover within it;
3) build cofferdam bottom concrete at steel boxed cofferdam bottom pour mold, fill steel boxed cofferdam shell inner concrete;
4) extract the water in steel boxed cofferdam out, the lower cushion cap of construction, guarantees that steel pipe pile and steel boxed cofferdam are connected firmly in anhydrous conditions;
5) the upper cushion cap of finally construction, forms the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam.
The present invention be applicable to the depth of water comparatively dark, wash away the bridge foundation and electric tower foundation built in larger ocean, river environment, can effectively reduce drag force, channel scour.
Claims (5)
1. the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam, it is characterized in that: basis point upper and lower two parts, top is divided into steel boxed cofferdam, and bottom is divided into steel pipe Driven-in Pile Foundations; Elevation residing for the steel pipe pile pile crown of described steel pipe Driven-in Pile Foundations is face, riverbed place; The steel pipe pile pile crown of upper part steel boxed cofferdam and lower part is consolidated by lower cushion cap; Steel boxed cofferdam there is upper cushion cap, upper cushion cap has tower seat or pier base; Described steel boxed cofferdam be in steel boxed cofferdam thin wall, be filled with concrete, cofferdam that underfill has bottom concrete to be formed.
2. the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam according to claim 1 and construction method thereof, is characterized in that: steel pipe driven pile (6) layout is by annulus layout, quincuncial arrangement or rectangular arrangement; Innermost ring steel pipe pile (6) is Vertical Pile, and all the other are for being in tilted layout.
3. the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam according to claim 1, is characterized in that: steel boxed cofferdam (2) planar design is circular, nose circle shape or ellipse.
4. the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam according to claim 1, is characterized in that: upper cushion cap (1) is concrete structure.
5. the construction method of the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam according to claim 1, is characterized in that: concrete steps are:
1) in stratum, pier position, squeeze into steel pipe pile, innermost ring steel pipe pile is Vertical Pile, and remaining is oblique stake, and elevation residing for pile crown is face, riverbed place;
2) after steel pipe pile has been constructed, by the steel boxed cofferdam manufactured, transportation by driving is to basic engineering pier position place, and after accurately locating with steel pipe pile multi-column pier foundation center, water filling sinking implantation, guarantees that steel boxed cofferdam by steel pipe pile pile crown cover within it;
3) build cofferdam bottom concrete at steel boxed cofferdam bottom pour mold, fill steel boxed cofferdam shell inner concrete;
4) extract the water in steel boxed cofferdam out, the lower cushion cap of construction, guarantees that steel pipe pile and steel boxed cofferdam are connected firmly in anhydrous conditions;
5) the upper cushion cap of finally construction, forms the two cushion cap steel pipe Driven-in Pile Foundations of steel boxed cofferdam.
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| CN201510628901.XA CN105239591A (en) | 2015-09-28 | 2015-09-28 | Steel pipe driven pile foundation with steel boxed cofferdam and dual bearing platforms, and construction method of foundation |
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| CN201510628901.XA CN105239591A (en) | 2015-09-28 | 2015-09-28 | Steel pipe driven pile foundation with steel boxed cofferdam and dual bearing platforms, and construction method of foundation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059901A (en) * | 2017-05-24 | 2017-08-18 | 中铁十六局集团第三工程有限公司 | A kind of steel jacket box and its cofferdam method |
| CN108660941A (en) * | 2018-07-24 | 2018-10-16 | 东北大学 | A kind of lock steel pipe splicing pile cofferdam and construction method |
| CN108894262A (en) * | 2018-06-29 | 2018-11-27 | 华南理工大学 | A kind of high pile foundation steel sleeve reinforced construction method and device |
| CN112796369A (en) * | 2020-12-17 | 2021-05-14 | 重庆市市政设计研究院有限公司 | Shallow water taking facility for riverbed bottom bearing layer and construction method |
| CN114703762A (en) * | 2022-05-16 | 2022-07-05 | 四川公路桥梁建设集团有限公司 | Foundation construction method of steel-concrete composite beam |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059901A (en) * | 2017-05-24 | 2017-08-18 | 中铁十六局集团第三工程有限公司 | A kind of steel jacket box and its cofferdam method |
| CN107059901B (en) * | 2017-05-24 | 2022-08-09 | 中铁十六局集团第三工程有限公司 | Steel casing and cofferdam method thereof |
| CN108894262A (en) * | 2018-06-29 | 2018-11-27 | 华南理工大学 | A kind of high pile foundation steel sleeve reinforced construction method and device |
| CN108660941A (en) * | 2018-07-24 | 2018-10-16 | 东北大学 | A kind of lock steel pipe splicing pile cofferdam and construction method |
| CN112796369A (en) * | 2020-12-17 | 2021-05-14 | 重庆市市政设计研究院有限公司 | Shallow water taking facility for riverbed bottom bearing layer and construction method |
| CN114703762A (en) * | 2022-05-16 | 2022-07-05 | 四川公路桥梁建设集团有限公司 | Foundation construction method of steel-concrete composite beam |
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