CN105178277A - Foundation reconnaissance and design method applied in special environment - Google Patents

Foundation reconnaissance and design method applied in special environment Download PDF

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Publication number
CN105178277A
CN105178277A CN201510456505.3A CN201510456505A CN105178277A CN 105178277 A CN105178277 A CN 105178277A CN 201510456505 A CN201510456505 A CN 201510456505A CN 105178277 A CN105178277 A CN 105178277A
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CN
China
Prior art keywords
pile
soil
pile foundation
reconnaissance
foundation
Prior art date
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CN201510456505.3A
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Chinese (zh)
Inventor
曾奇
朱敏
张宏刚
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中机国能电力工程有限公司
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Application filed by 中机国能电力工程有限公司 filed Critical 中机国能电力工程有限公司
Priority to CN201510456505.3A priority Critical patent/CN105178277A/en
Publication of CN105178277A publication Critical patent/CN105178277A/en

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Abstract

The invention discloses a foundation reconnaissance and design method applied in a special environment. The foundation reconnaissance and design method applied in the special environment includes the following steps that (1) reconnaissance is carried out, and the interval between adjacent reconnaissance points is controlled to be more than 50 m; (2) a pile foundation is designed, and the length of the pile foundation is formed by splicing a plurality of precast piles; (3) the pile foundation is constructed, the pile foundation end enters the depth of a bearing stratum to meet the design requirements, and hammering is stopped after the pile foundation is stabilized. The foundation reconnaissance and design method applied in the special environment is reasonable in design, simple in structure and capable of lowering the workload of detailed reconnaissance and improving construction efficiency. The pile foundation is formed by splicing the precast piles, the engineering quality can be guaranteed, the construction progress is accelerated, and the engineering cost is reduced.

Description

A kind of soil investigation, soil exploration, method for designing be applied under particular surroundings

Technical field

The present invention relates to soil investigation, soil exploration method and technology field, be related specifically to a kind of soil investigation, soil exploration, method for designing be applied under particular surroundings.

Background technology

Current domestic soil investigation, soil exploration mainly performs the standard such as " Code for investigation of geotechnical engineering " (GB50021-2001), " geotechnical investigation technical specification " (YS5202-2004), " steam power station exploration of geotechnical engineering tecnical regulations " (DL/T5074-2006), and such as " Code for investigation of geotechnical engineering " (GB50021-2001) requires as follows:

The spacing (m) of detailed prospecting exploratory point

Due to the detailed exploratory point close together of GB standard-required, so domestic design teacher is when Pile Foundations Design, usually be all specify absolute altitude at the bottom of stake top and stake, namely specify stake long, press design length when producing preformed pile to produce, scene does not need to cut stake work substantially, there is following shortcoming in above method, between adjacent exploratory point, spacing is nearer, improve the workload of constructor, and have a strong impact on efficiency of construction, and when producing preformed pile, mounting design produced in lengths, require higher to the production equipment producing preformed pile, and production efficiency is low, be not easy to produce in enormous quantities.

But for the deficiencies in the prior art, developer is necessary that a kind of reasonable in design, structure of development is simple, can reduce the workload surveyed in detail, improve efficiency of construction, by the pile foundation that preformed pile is spliced to form, can workmanship be ensured, improve construction speed and a kind of soil investigation, soil exploration, method for designing be applied under particular surroundings of saving construction costs.

Summary of the invention

For solving prior art Problems existing, the object of the invention provide a kind of reasonable in design, structure simple, the workload surveyed in detail can be reduced, improve efficiency of construction, by the pile foundation that preformed pile is spliced to form, can workmanship be ensured, improve construction speed and a kind of soil investigation, soil exploration, method for designing be applied under particular surroundings of saving construction costs.

For solving above technical problem, the present invention comes to be realize by the following technical solutions:

Be applied to the soil investigation, soil exploration under particular surroundings, a method for designing, comprise the following steps:

1) reconnoitre, adjacent exploratory point spacing is controlled at more than 50m;

2) Pile Foundations Design, pile foundation length is spliced by some preformed piles;

3) pile foundation construction, pile foundation end enter bearing stratum depth meet design requirement stable after stop hammer.

In a preferred embodiments of the present invention, described step 1) in, the main purpose of prospecting is the uniformity judging soil layer.

In a preferred embodiments of the present invention, described step 2) in, preformed pile length is 6m or 9m or 12m.

In a preferred embodiments of the present invention, described step 3) in, meet design requirement stable after stop hammer, stable condition is that pile penetration should meet 30mm/10 and hits.

Compared with prior art, the spacing of adjacent exploratory point controls at more than 50m by the present invention, decrease the workload surveyed in detail, and pile foundation is spliced by some preformed piles, workmanship can be ensured, and preformed pile listened modulus can the preformed pile of production department 6m or 9m or 12m, make the production plant of preformed pile, modularization, mass, to reach maximum operating efficiency, thus improve construction speed, and effectively save construction costs.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the arrangement of reconnaissance point figure that certain project external is worked out by GB code requirement.

Fig. 2 and Fig. 1 is the arrangement of reconnaissance point figure that identical project is worked out by patent of the present invention.

Fig. 3 is operating process schematic diagram of the present invention.

Detailed description of the invention

The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.

With reference to shown in Fig. 1, be certain project external, levelling of the land, according to the requirement of GB specification and the evaluation of domestic ground expert, at least will arrange 62 exploratory points, the on-the-spot situation according to exploration, likely increases at any time and counts.

In addition because engineering time is urgent, local exploratory techniques and preformed pile working condition are comparatively backward, and (contract requirement survey must be accepted by national surveying unit, the necessary local purchase of constructional materials), preformed pile manufacturer cannot be the customized length of each pile, and therefore the factor such as duration, technology, working condition seriously hinders the progress of this project.

With reference to shown in Fig. 2 and Fig. 3, a kind of soil investigation, soil exploration, the method for designing be applied under particular surroundings provided in figure, comprises the following steps: 1) reconnoitre; 2) Pile Foundations Design; 3) pile foundation construction.

In step 1) in reconnoitre by Britain BS standard (local be suitable for), adjacent exploratory point spacing is controlled at more than 50m, former 62 exploratory points by GB standard configuration is reduced to 23, is mainly used in the uniformity judging soil layer.

Step (1) can save prospecting time and expense in a large number, and especially run in early stage does not have the constraint of GB standard, and survey is accepted by the Di Kan department of locality mostly, and this measure more can be conducive to the control of programming.

In step 2) in Pile Foundations Design, without the need to being the accurate length of each root Pile Foundations Design, only need provide reference length, as 30 ~ 33m, the length of pile foundation is spliced by some preformed piles, and preformed pile length is 6m or 9m or 12m.

The actual pile foundation length of step (2) is spliced by preformed pile, design schedule can be accelerated, and reduce due to prospecting error or design error give on-the-spot piling work bring constant, and be conducive to the batch production of preformed pile, modularization, mass production, especially some run in early stage and economically less developed region, technics comparing falls behind, and obviously can reduce operating efficiency for each pile base is customized.

In step 3) in pile foundation construction, pile foundation end enter bearing stratum depth meet design requirement stable after stop hammer, stable condition is that pile penetration should meet 30mm/10 and hits.

Step (3), due to the length that pile foundation is not customized, so need to carry out scene to cut pile foundation work, cut pile foundation length generally to can be controlled between 0 ~ 3m, although cause certain waste, but from saving survey fee with, raising programming aspect consider, the raising of project total cost can not be caused, even more economically.

The spacing of adjacent exploratory point controls at more than 50m by the present invention in sum, decrease the workload surveyed in detail, and pile foundation is spliced by some preformed piles, workmanship can be ensured, and preformed pile listened modulus can the preformed pile of production department 6m or 9m or 12m, made the production plant of preformed pile, modularization, mass, to reach maximum operating efficiency, thus improve construction speed, and effectively save construction costs.

More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (4)

1. be applied to the soil investigation, soil exploration under particular surroundings, a method for designing, it is characterized in that, comprise the following steps:
1) reconnoitre, adjacent exploratory point spacing is controlled at more than 50m;
2) Pile Foundations Design, pile foundation length is that preformed pile is spliced;
3) pile foundation construction, pile foundation end enter bearing stratum depth meet design requirement stable after stop hammer.
2. a kind of soil investigation, soil exploration, method for designing be applied under particular surroundings as claimed in claim 1, is characterized in that, described step 1) in, the main purpose of prospecting is the uniformity judging soil layer.
3. a kind of soil investigation, soil exploration, method for designing be applied under particular surroundings as claimed in claim 1, is characterized in that, described step 2) in, preformed pile length is 6m or 9m or 12m.
4. a kind of soil investigation, soil exploration, method for designing be applied under particular surroundings as claimed in claim 1, is characterized in that, described step 3) in, meet design requirement stable after stop hammer, stable condition is that pile penetration should meet 30mm/10 and hits.
CN201510456505.3A 2015-07-29 2015-07-29 Foundation reconnaissance and design method applied in special environment CN105178277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510456505.3A CN105178277A (en) 2015-07-29 2015-07-29 Foundation reconnaissance and design method applied in special environment

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Application Number Priority Date Filing Date Title
CN201510456505.3A CN105178277A (en) 2015-07-29 2015-07-29 Foundation reconnaissance and design method applied in special environment

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CN105178277A true CN105178277A (en) 2015-12-23

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979779A (en) * 2010-10-29 2011-02-23 浙江宝业建设集团有限公司 Foundation pit construction method capable of preventing nearly inclined buildings from being tilted and sunk
CN102819631A (en) * 2012-07-18 2012-12-12 北京中科辅龙科技股份有限公司 Three-dimensional geological exploration analysis and interaction method
JP2013040499A (en) * 2011-08-17 2013-02-28 Jfd Engineering Co Ltd Columnar ground improvement method
CN103388342A (en) * 2013-07-30 2013-11-13 大连市建筑设计研究院有限公司 Composite foundation and design method thereof
CN103572755A (en) * 2013-11-01 2014-02-12 中淳高科桩业股份有限公司 Prestressed concrete precast pile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979779A (en) * 2010-10-29 2011-02-23 浙江宝业建设集团有限公司 Foundation pit construction method capable of preventing nearly inclined buildings from being tilted and sunk
JP2013040499A (en) * 2011-08-17 2013-02-28 Jfd Engineering Co Ltd Columnar ground improvement method
CN102819631A (en) * 2012-07-18 2012-12-12 北京中科辅龙科技股份有限公司 Three-dimensional geological exploration analysis and interaction method
CN103388342A (en) * 2013-07-30 2013-11-13 大连市建筑设计研究院有限公司 Composite foundation and design method thereof
CN103572755A (en) * 2013-11-01 2014-02-12 中淳高科桩业股份有限公司 Prestressed concrete precast pile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
戴洪军等: "利用旋挖工艺优化嵌岩桩的勘测方案", 《电力勘测设计》 *

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Application publication date: 20151223