CN203639957U - Static load test loading structure of driven pile foundation - Google Patents

Static load test loading structure of driven pile foundation Download PDF

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Publication number
CN203639957U
CN203639957U CN201320809756.1U CN201320809756U CN203639957U CN 203639957 U CN203639957 U CN 203639957U CN 201320809756 U CN201320809756 U CN 201320809756U CN 203639957 U CN203639957 U CN 203639957U
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China
Prior art keywords
steel pipe
driven
pile foundation
test
loading structure
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CN201320809756.1U
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Chinese (zh)
Inventor
邱琼海
王立忠
于祥君
姜江华
李斐
徐乐乐
刘胜光
黄令庆
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China Railway Major Bridge Engineering Group Co Ltd MBEC
2nd Engineering Co Ltd of MBEC
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China Railway Major Bridge Engineering Group Co Ltd MBEC
2nd Engineering Co Ltd of MBEC
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Priority to CN201320809756.1U priority Critical patent/CN203639957U/en
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Abstract

The utility model relates to a static load test loading structure of a driven pile foundation. The static load test loading structure of the driven pile foundation comprises steel pipe vertical pillars, a bottom layer vertical pillar connecting system and a cross beam, wherein the four steel pipe vertical pillars connected together are arranged at the top of the cross beam, the bottom layer vertical pillar connecting system is arranged at the bottom of the cross beam, is near the bottoms of the steel pipe vertical pillars, is welded to a phase crown line of the steel pipe vertical pillars in a cutting mode and serves as a communication pipe, and the cross beam serves as a load distribution platform. The static load test loading structure of the driven pile foundation has the advantages of resolving the problem that a single driven pile foundation can not reach the design value required by the test when adopting steel materials or sand bags due to the limited load distribution range, also resolving the problems that the stacking height is high, the danger coefficient is increased and operation is difficult in order to reach the design value required by the test, reducing the investment on structures such as a lifting jack, a hydraulic pump, a counter-force beam and an anchor pile, being low in test const, being convenient to construct, being easy to operate, carrying out loading and unloading stably, controlling the loading weight and time easily, improving the accuracy of the static load test, and having high popularization value.

Description

A kind of Driven-in Pile Foundations static loading test loading structure
Technical field
The utility model relates to a kind of Driven-in Pile Foundations static loading test loading structure, it is applicable to, in the time carrying out Driven-in Pile Foundations construction, after steel pipe pile inserted to play puts in place, according to designing requirement, Driven-in Pile Foundations be carried out to static loading test.Belong to technical field of bridge construction.
Background technology
While adopting driven pile as architecture basics, need carry out static loading test to driven pile according to single-pile stress design load.Static loading test adopts the test method close to the actual operating conditions of vertical pressure resisting pile, determines vertical ultimate bearing capacity of single pile.Tradition Static Load Test Method generally adopts steel or sand pocket to load, or load by anchoring pile reaction beam method, but for single Driven-in Pile Foundations, because carrying, cloth is limited in scope, adopt steel or sand pocket to be difficult to reach the design load of test requirements document, or reaching experimental design, to be worth required preloading highly higher, is difficult to operation.In addition, while adopting steel or sand pocket to load, load classification is not accurate enough, and experimental result error is larger.Adopt anchoring pile reaction beam method to load, not only need to prepare the device such as jack, oil pressure pump, also to prepare at least 4 anchoring piles, and enough powerful reaction beam is set thereon, be fixed on anchoring pile, the reaction force in order to balance jack to driven pile, therefore, aided process is more, complicated operation.
Summary of the invention
The utility model proposes a kind of Driven-in Pile Foundations static loading test loading structure, its object is intended to overcome the existing above-mentioned defect of prior art, has the functions such as the classification of the load of realization is accurate, experimental result error is little, cost is low, operation is extremely convenient.
Technical Solving of the present utility model: a kind of Driven-in Pile Foundations static loading test loading structure, its structure comprises that steel pipe post, bottom column connect system, rood beam, wherein four steel pipe posts that are connected as a single entity of top layout of rood beam, bottom column connects the bottom that ties up to rood beam, near at the bottom of the post of steel pipe post, and weld with the line of the hat mutually cutting of steel pipe post, bottom column connects system simultaneously as communicating pipe, and rood beam is as cloth carrying platform.
Advantage of the present utility model: solved single Driven-in Pile Foundations, because carrying, cloth is limited in scope, adopt steel or sand pocket to be difficult to reach test requirements document design load, solved simultaneously and reached experimental design and be worth that required preloading is highly higher, danger coefficient increases, be difficult to the problems such as operation.Jack, hydraulic pump, reaction beam, the isostructural input of anchoring pile are also reduced in addition.Less investment of the present invention, be existing structure, can adopt existing beam body support frame or steel pipe pile to fall to use, also not need special hydraulic machinery, experimentation cost is low, easy construction, easy operating, loading and unloading all can reach steadily and carry out, easily size and the time of controlled loading, improve the accuracy of static loading test simultaneously, there is larger promotional value.
Brief description of the drawings
Accompanying drawing 1 is that the facade of Driven-in Pile Foundations static loading test loading structure is arranged schematic diagram.
Accompanying drawing 2 is layout 1--1 schematic diagrames of Driven-in Pile Foundations static loading test loading structure.
Accompanying drawing 3 is layout 2--2 schematic diagrames of Driven-in Pile Foundations static loading test loading structure.
In figure, 1 is Driven-in Pile Foundations to be tested, the 2nd, and rood beam, the 3rd, Construction of continuous beam bracket upright post (four one group), the 4th, column connects system, and the 5th, guy wire rope, is reliably connected with pier shaft, and the 6th, plastic cement water pipe, the 7th, pier shaft, the 8th, stop valve.
Detailed description of the invention
Contrast accompanying drawing, a kind of Driven-in Pile Foundations static loading test loading structure, its structure comprise steel pipe post 3, bottom connect be 4, rood beam 2, wherein four steel pipe posts that are connected as a single entity of top layout of rood beam 2, it is 4 near at the bottom of steel pipe post 3 posts that bottom column connects, in the bottom of rood beam 2, rood beam is as cloth carrying platform.
3 four one group of described steel pipe post, bottom lock, is a closed steel tubing string, that to connect by column be 4 to be linked to be an entirety, it is 4 near at the bottom of steel pipe post 3 posts that bottom column connects, and with the line of the hat mutually cutting welding of steel pipe post 3, therefore to connect be 4 simultaneously as communicating pipe for this layer of column.It is 4 to be linked to be an entirety that steel pipe post 3 is connected with column, is positioned over rood beam 2 tops upper, and rood beam 2 is placed in the top of Driven-in Pile Foundations 1 to be tested, for ensureing the safety and stablization of steel pipe post 3, is connected with pier shaft 7 by guy wire rope 5.When loading, by plastic cement water pipe 6, to the interior water filling of steel pipe post 3, the stop valve 8 by plastic cement water pipe 6 and at the bottom of being placed in, realizes the steady loading and unloading of static loading test.
A construction method for Driven-in Pile Foundations static loading test loading structure, comprises following concrete steps:
1) according to designing requirement, Driven-in Pile Foundations 1 inserted to play is put in place;
2) rood beam 2 is arranged on driven pile top, and four steel pipe posts that are connected as a single entity 3 are arranged on rood beam 2 tops, and bottom column is communicated with and connects as bottom is 4;
3) on the steel pipe tube wall near steel pipe post bottom, all open Φ 10cm hole, current in four columns are communicated with, and stop valve 8 is installed.By opening stop valve 8, reach the object of steady unloading;
4) steel pipe post 3 tops are installed four jiaos to the guy wire rope 5 drawing, and are reliably connected, to ensure the vertical and stable of total with pier shaft 7;
5) pass through plastic cement water pipe 6 to the interior water filling of steel pipe post 3, realize Driven-in Pile Foundations 1 static loading test to be tested is loaded, and in control valve, water level completes hierarchical loading;
6) be loaded into design and hold after the lotus time, by steel pipe post 3 bottom stop valves 8 discharge water and control valve in water level carry out classification and complete unloading.
Described driven pile top arranges that rood beam is for single Driven-in Pile Foundations, arranges that rood beam is as cloth carrying platform.
Described employing steel pipe post is as water-storing device, and one group of steel pipe post bottom is communicated with between two, makes surrounding loading balance.
Described hierarchical loading or load shedding are by water filling, and water is as ballast, and realize the object of hierarchical loading or load shedding by controlling water level in steel pipe.

Claims (3)

1. a Driven-in Pile Foundations static loading test loading structure, it is characterized in that comprising that steel pipe post, bottom column connect system, rood beam, wherein four steel pipe posts that are connected as a single entity of top layout of rood beam, bottom column connects the bottom that ties up to rood beam, near at the bottom of the post of steel pipe post, and weld with the line of the hat mutually cutting of steel pipe post, bottom column connects system simultaneously as communicating pipe, and rood beam is as cloth carrying platform.
2. a kind of Driven-in Pile Foundations static loading test loading structure according to claim 1, is characterized in that described steel pipe post is four one group, and bottom lock, is a closed steel tubing string, connects by bottom column the entirety that system is linked to be.
3. a kind of Driven-in Pile Foundations static loading test loading structure according to claim 1, is characterized in that described rood beam is placed in the top of Driven-in Pile Foundations to be tested, is connected with pier shaft by guy wire rope.
CN201320809756.1U 2013-12-11 2013-12-11 Static load test loading structure of driven pile foundation Active CN203639957U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320809756.1U CN203639957U (en) 2013-12-11 2013-12-11 Static load test loading structure of driven pile foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320809756.1U CN203639957U (en) 2013-12-11 2013-12-11 Static load test loading structure of driven pile foundation

Publications (1)

Publication Number Publication Date
CN203639957U true CN203639957U (en) 2014-06-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643702A (en) * 2013-12-11 2014-03-19 中铁大桥局集团第二工程有限公司 Loading structure for static load test of driven pile foundation and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643702A (en) * 2013-12-11 2014-03-19 中铁大桥局集团第二工程有限公司 Loading structure for static load test of driven pile foundation and construction method thereof
CN103643702B (en) * 2013-12-11 2015-09-30 中铁大桥局集团第二工程有限公司 A kind of Driven-in Pile Foundations static test loading structure and construction method thereof

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