CN102979098A - Construction method for rapidly processing soft soil foundation - Google Patents
Construction method for rapidly processing soft soil foundation Download PDFInfo
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- CN102979098A CN102979098A CN2012104630839A CN201210463083A CN102979098A CN 102979098 A CN102979098 A CN 102979098A CN 2012104630839 A CN2012104630839 A CN 2012104630839A CN 201210463083 A CN201210463083 A CN 201210463083A CN 102979098 A CN102979098 A CN 102979098A
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Abstract
The invention belongs to the technical field of soft soil foundation processing and particularly relates to a construction method for rapidly processing a soft oil foundation. The construction method for rapidly processing the soft soil foundation solves the defects of the existing soft soil foundation processing methods of being big in investing waste, polluting environment, being long in schedule and the like. The construction method for rapidly processing soft soil foundation includes the following steps of in a soft soil foundation area, plugging and striking a steel sheet pile in the construction range and laying two layers of color strip cloth on the top of the striking steel sheet pile, and, on the upper portion of the color strip cloths, constructing reinforced concrete base and maintaining after the construction of the reinforced concrete base. The construction method for rapidly processing has the advantages of being wide in application, suitable for the constructions of continuous beam and continuous bridge of the railway steel structure, and suitable for constructions of continuous beam and continuous bridge of road steel structure, saving construction schedule, saving great amount of input of reinforced concrete raw materials, and being outstanding in economic effects.
Description
Technical field:
The invention belongs to the technical field of Soft Ground, be specifically related to a kind of job practices of carrying out fast Soft Ground, particularly be applied in the firm structure continuous beam of various concrete or the continuous girder bridge rack construction Soft Ground.
Background technology
Along with the fast development of speedway and railway cause, the firm structure continuous beam of concrete and continuous girder bridge are handsome in appearance with it, and span is large, save the advantages such as ground resource, account for sizable ratio in bridge.Just structure continuous beam or continuous girder bridge all need to carry out setting up of falsework in construction, and particularly in the soft base district, in the steel structure continuous beam or continuous girder bridge that span is large, the processing of ground in the time of need to carrying out rack construction is to guarantee the construction of major project.And in construction major project process, the intensity of falsework system and stability are the key points that whole work progress and quality of main body project guarantee, are the keys of whole construction so soft base district falsework ground is processed.At present, use comparatively widely foundation treatment mode to change to fill out that compacting is processed, bored pile is processed, high-pressure rotary jet grouting pile is processed and pile for prestressed pipe processing etc.Wherein, change to fill out to tamp to process and to satisfy the actual carrying capacity requirement in most of soft base district, and in the continuous beam bridge construction of striding the road cross a river, can't use the range of application limitation; The drill-pouring pile foundation is processed the cost height and is produced a large amount of mud, has increased construction cost, has destroyed environment, has caused the waste of resource; The high-pressure rotary-spray pile foundation processes because construction equipment and soil mass property restriction, and its pile-forming effect is difficult to guarantee that maintenance is long in time limit, can not carry out recyclingly, has increased construction cost, has caused the waste of resource; Pile for prestressed pipe Foundation Treatment cost is high, and needs to drop into large-scale pile driver equipment, because the vibrations extruding affects surrounding building, the pile pulling difficulty increased difficulty of construction and construction period greatly after construction was finished.
Summary of the invention
The present invention exists in order to solve soft-soil foundation treatment method in the prior art that the investment waste is large, contaminated environment, long in time limit etc. shortcoming, has offered a kind of job practices of carrying out fast Soft Ground.
The present invention is achieved through the following technical solutions:
A kind of job practices of carrying out fast Soft Ground, its step is as follows:
The first step, the soft base district, in boundary of works area, carry out the inserted to play of steel sheet pile, spacing between the steel sheet pile is determined according to the bearing capacity of Practical Project, during construction, guarantee that the end face absolute altitude of each root steel sheet pile is consistent, error is controlled at+2cm in, and to guarantee the steel sheet pile verticality, its maximum deviation is less than or equal to 3cm;
Second step: after the steel sheet pile construction in the boundary of works area is complete, lay two-layer colour bar cloth at the steel sheet pile top;
The 3rd step: on colour bar cloth top, the construction reinforced bar concrete foundation, the size of reinforced concrete foundation is pressed steel sheet pile construction scope size Control, the steel sheet pile top embeds concrete foundation 3-5cm, and the reinforcing bar in reinforced concrete foundation is by arranging respectively that up and down an interlamellar spacing is the principle control of the reinforced mesh of 0.2m, carries out maintenance after reinforced concrete foundation has been constructed.
The 4th step: after reinforced concrete foundation reaches intensity, utilize sandbag or prefabricated section that reinforced concrete foundation is carried out static loading test.(this step is intended to test the settling amount that ground is processed, and to be used for the reservation of top temporary steel pipe holder height, if any empirical data, can not do).
The 5th step: construction bracket structure division on the reinforced concrete foundation that becomes.
The present invention has following beneficial effect:
1, construction technology is ripe, and quality is secure.
2, steel sheet pile construction is quick, has saved the engineering construction duration, and wherein, steel sheet pile is squeezed into one about 10 minutes.Considering conventional construction of soft soil treatment saved 10-30 days.
3, steel sheet pile construction machinery is simple, vibration is little, and noise is low.
4, contrast bored pile and high-pressure rotary jet grouting pile can not produce mud, have played the effect of protection of the environment;
5, contrast pile for prestressed pipe is squeezed into and is pulled out easily simply, and efficient is fast.
6, to be onstructed complete after, steel sheet pile can be pulled out, can be recycling, saved construction cost, can not cause the wasting of resources.
7, be widely used, both be fit to the construction of rail iron structure continuous beam and continuous girder bridge, be fit to again the construction of highway steel structure continuous beam and continuous girder bridge, both saved the construction period, saved again the raw-material input of a large amount of steel concrete, its remarkable in economical benefits.
Description of drawings
Fig. 1 is elevational schematic view of the present invention,
Fig. 2 is floor map of the present invention,
Among the figure: 1-steel sheet pile, 2-reinforced concrete foundation.
The specific embodiment
In conjunction with drawing and certain Practical Project, its specific embodiment is as follows:
A kind of job practices of carrying out fast Soft Ground, the preferred domestic Larsen steel sheet pile of steel sheet pile, it may further comprise the steps:
The first step: this construction works is in the soft base district, belong to the continuous beam bridge construction, the construction of falsework method is adopted in construction, in stressed point range of falsework (9m*2.6m), utilize vibro driver to carry out the inserted to play of steel sheet pile, the spacing of Larsen steel sheet pile is determined according to the bearing capacity of Practical Project, the method those skilled in the art of determining can this be known from prior art, present embodiment is pressed 1m and is arranged, during construction, the end face absolute altitude that guarantees each root steel sheet pile is consistent, error is controlled at+2cm in, and to guarantee the steel sheet pile verticality, its maximum deviation is less than or equal to 3cm;
Second step: after steel sheet pile construction in the boundary of works area is complete, in boundary of works area, the steel sheet pile top lays two-layer colour bar cloth, its objective is that reducing steel sheet pile directly contacts with concrete, be convenient to major project the pulling out of steel sheet pile of completing.
The 3rd step: after the construction of colour bar cloth is complete, all around formwork erection and colligation concrete foundation reinforcing bar, the size of reinforced concrete foundation is pressed steel sheet pile construction scope size Control, reinforcing bar is by arranging respectively that up and down an interlamellar spacing is HRB335 Φ 16 reinforced mesh of 0.2m, then concreting, its Steel Sheet Pile embeds about concrete foundation 5cm, carries out maintenance after reinforced concrete foundation has been constructed, and be about 5 days curing period.
The 4th step: after reinforced concrete foundation reaches intensity, utilize concrete precast block to carry out static loading test by 120% pair of reinforced concrete foundation of actual loading load.This step is intended to test the settling amount that ground is processed, to be used for the reservation of top temporary steel pipe holder height.
The 5th step: after static load is complete, carries out follow-up supporting structure at the reinforced concrete foundation that becomes and partly construct.The supporting structure part comprises the construction of steel pipe post, shaped steel transverse and longitudinal beam, the lumps of wood and major project template.
Claims (2)
1. job practices of carrying out fast Soft Ground is characterized in that step is as follows:
The first step, the soft base district, in boundary of works area, carry out the inserted to play of steel sheet pile, spacing between the steel sheet pile is determined according to the bearing capacity of Practical Project, during construction, guarantee that the end face absolute altitude of each root steel sheet pile is consistent, error is controlled at+2cm in, and to guarantee the steel sheet pile verticality, its maximum deviation is less than or equal to 3cm;
Second step: after the steel sheet pile construction in the boundary of works area is complete, in boundary of works area, the steel sheet pile top lays two-layer colour bar cloth;
The 3rd step: on colour bar cloth top, the construction reinforced bar concrete foundation, the size of reinforced concrete foundation is pressed steel sheet pile construction scope size Control, the steel sheet pile top embeds concrete foundation 3-5cm, and the reinforcing bar in reinforced concrete foundation is by arranging respectively that up and down an interlamellar spacing is the principle control of the reinforced mesh of 0.2m, carries out maintenance after reinforced concrete foundation has been constructed.
2. job practices of carrying out fast Soft Ground according to claim 1 is characterized in that:
The 4th step: after reinforced concrete foundation reaches intensity, utilize sandbag or prefabricated section that reinforced concrete foundation is carried out static loading test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104630839A CN102979098A (en) | 2012-11-16 | 2012-11-16 | Construction method for rapidly processing soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104630839A CN102979098A (en) | 2012-11-16 | 2012-11-16 | Construction method for rapidly processing soft soil foundation |
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| CN102979098A true CN102979098A (en) | 2013-03-20 |
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| CN2012104630839A Pending CN102979098A (en) | 2012-11-16 | 2012-11-16 | Construction method for rapidly processing soft soil foundation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961605A (en) * | 1982-09-27 | 1984-04-07 | Kawasaki Steel Corp | Revetment work |
| CN101851931A (en) * | 2009-11-30 | 2010-10-06 | 丁慈鑫 | Sinking well with secondary support device and construction method thereof |
| CN102094425A (en) * | 2010-12-24 | 2011-06-15 | 中铁六局集团有限公司 | Foundation pit construction method adopting shallow buried depth Larsen steel plate pile as protective cofferdam |
| CN102493458A (en) * | 2011-11-24 | 2012-06-13 | 天津二十冶建设有限公司 | Construction method for closing end of deep foundation pit steel sheet pile in soft soil foundation pipe trench and power tunnel engineering |
-
2012
- 2012-11-16 CN CN2012104630839A patent/CN102979098A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961605A (en) * | 1982-09-27 | 1984-04-07 | Kawasaki Steel Corp | Revetment work |
| CN101851931A (en) * | 2009-11-30 | 2010-10-06 | 丁慈鑫 | Sinking well with secondary support device and construction method thereof |
| CN102094425A (en) * | 2010-12-24 | 2011-06-15 | 中铁六局集团有限公司 | Foundation pit construction method adopting shallow buried depth Larsen steel plate pile as protective cofferdam |
| CN102493458A (en) * | 2011-11-24 | 2012-06-13 | 天津二十冶建设有限公司 | Construction method for closing end of deep foundation pit steel sheet pile in soft soil foundation pipe trench and power tunnel engineering |
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Application publication date: 20130320 |