CN109881711A

CN109881711A - Scaffold recycling method when reverse construction eddy flow well bore wall

Info

Publication number: CN109881711A
Application number: CN201910180183.2A
Authority: CN
Inventors: 陈光中; 王磊; 金国帅; 王军勇
Original assignee: China 22MCC Group Corp Ltd
Current assignee: China 22MCC Group Corp Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2019-06-14
Anticipated expiration: 2039-03-11
Also published as: CN109881711B

Abstract

The present invention provides scaffold recycling methods when a kind of eddy flow well bore wall reverse construction: first, set up the scaffold with construction first segment concrete tube wall, along the pre-buried several overhanging bars of barrel annular when concreting, each overhanging bar extends to center position, and overhanging bar extension elongation is greater than scaffold width；Secondly, directly excavate the second segment earthwork, scaffold lose support fall on overhanging bar exist, by overhanging bar protection in first segment barrel range；Then, after excavation, with guide chain lifting scaffold, after the suspension scaffold for cutting off first segment barrel, scaffold is integrally unloaded on the soil layer for falling on second segment by guide chain；Then, the construction of second segment concrete tube wall, still pre-buried overhanging bar when second segment barrel pours, by above-mentioned operation until Wall Construction finishes are carried out.Operation scaffold is recycled integrally in this method scaffold, without repeatedly removing and setting up, while saving cost of labor, also greatly shortens the construction period.

Description

Scaffold recycling method when reverse construction eddy flow well bore wall

Technical field

The present invention relates to foot hand is operated when construction scaffold construction method, especially eddy flow well bore wall reverse construction The method that frame is recycled.

Background technique

Whirling well is often built in the factory sites such as steel-making continuous casting or steel rolling workshop.Traditional eddy flow well bore wall reverse construction, soil After first segment excavates in side, scaffold is set up, scaffold branch is located on the soil layer not excavated, first segment concrete tube wall of constructing.By In soil layer be scaffold basis, if therefore scaffold exist, influence excavate the second segment earthwork, it is therefore necessary to scaffold is removed Excavate second segment again afterwards, second segment has excavated, and carries out concrete tube wall and applies man-hour requirement to set up scaffold again flat as construction Platform；Above-mentioned operation is repeated until Wall Construction finishes.Construction method scaffold in the prior art, which is repeatedly removed, repeatedly to be set up, investment Higher cost；And repeatedly set up the dismounting influence construction period.

Summary of the invention

To solve prior art problem, the repeated work for avoiding scaffold from setting up repeatedly, the present invention provides a kind of new apply Work method.

Particular technique means provided by the invention are:

Scaffold recycling method when a kind of eddy flow well bore wall reverse construction:

Firstly, the scaffold with construction first segment concrete tube wall is set up, if pre-buried along barrel annular when concreting Dry overhanging bar, each to overhang bar to center position extension, overhanging bar extension elongation is greater than scaffold width；

Secondly, directly excavate the second segment earthwork, scaffold, which loses support and falls on overhanging bar, to exist, by overhanging bar protection the One section of barrel range；

It then,, will by guide chain after the suspension scaffold for cutting off first segment barrel with guide chain lifting scaffold after excavation Scaffold is integrally unloaded and is fallen on the soil layer of second segment；

Then, the construction of second segment concrete tube wall, still pre-buried overhanging bar when second segment barrel pours, by above-mentioned work are carried out Sequence is until Wall Construction finishes.

This method scaffold make operate scaffold be integrally recycled, without repeatedly removing and setting up, save manually at This while, also greatly shortens the construction period.

Detailed description of the invention

Pre-buried overhanging bar in Fig. 1 first segment barrel；

Fig. 2 is along the pre-buried overhanging bar of barrel；

Fig. 3 scaffold overhangs in upper end；

Fig. 4 scaffold, which unloads, drops down onto earthwork top surface in hole；

Fig. 5 second segment Wall Construction and pre-buried overhanging bar；

Fig. 6 Wall Construction is completed.

Specific embodiment

Eddy flow well bore wall reverse construction, generally by three sections of barrel point, one section of earth excavation is constructed one section, and scaffold is built It is located in the earthwork that do not excavate, as Wall Construction platform.The present invention is the structure of straight tube for eddy flow well bore wall, especially suitable When eddy flow well bore wall reverse construction, design concept of the invention is to keep scaffold whole in lower layer's Wall Construction, is made Lower layer's earthwork can recycle after scraping out.

Scaffold recycling method provided by the invention is:

Work progress of the invention is described in detail with reference to the accompanying drawing, Fig. 1 to Fig. 6 shows each step of the invention in order Suddenly Construction State is descended, overhangs bar 1, first segment barrel 2, scaffold 3, layer to be cut the earth 4, guide chain 5, second segment barrel 6, third in figure Section barrel 7, whirling well conical bottom 8.Concrete operation step is:

(1) after the completion of first segment earth excavation, scaffold construction first segment barrel is set up, first segment concrete tube wall pours When in pre-buried overhanging bar, overhang pole length and be greater than scaffold width, such as Fig. 1；Pre-buried overhanging bar is pre-buried along barrel annular, such as Fig. 2 It is shown.

(2) until excavating the second segment earthwork, when scaffold base foundation is scooped away, scaffold is hung on overhanging bar, is protected It holds in first segment barrel height, the second segment earthwork is dug to projected depth, sees Fig. 3.

(3) several guide chains are set along whirling well week circle, guide chain is connect with scaffold, will be embedded in the overhanging of first segment barrel in advance Bar is cut off, and it is as shown in Figure 4 to drop scaffold earthwork top surface, the state operated in cheating using guide chain.

(4) construction whirling well second segment barrel, and the pre-buried overhanging bar in second segment barrel concreting, such as Fig. 5 institute Show.

(5) above-mentioned operation is repeated, third section barrel of constructing is removed scaffold, bored until bowl wall portion construction is completed The construction at shape bottom.Conical bottom construction does not need scaffold, thus when final stage barrel pours be do not need again it is pre-buried Outstanding framed bent, Fig. 6 show the pre-designed figure of conical bottom, and scaffold is removed before conical bottom earth excavation.Wall Construction is completed, foot Hand cradle is exited using end.

If the construction of whirling well, direct dismounting scaffold, if there are also subsequent eddy flow well construction, it can be by guide chain by foot hand Frame integrally takes out, and is used for next eddy flow well construction.

The present invention provides construction methods, and scaffold is integrally kept leaving, is recycled, and reduce the duplication of labour, shorten Duration.

Claims

1. scaffold recycling method when a kind of eddy flow well bore wall reverse construction:

Firstly, the scaffold with construction first segment concrete tube wall is set up, it is pre-buried several outstanding along barrel annular when concreting Rod, each to overhang bar to center position extension, overhanging bar extension elongation is greater than scaffold width；

Secondly, directly excavate the second segment earthwork, scaffold lose support fall on overhanging bar exist, by overhanging bar protection in first segment Barrel range；

Then, after excavation, scaffold is lifted with guide chain, after the suspension scaffold for cutting off first segment barrel, by guide chain by foot hand Frame is integrally unloaded and is fallen on the soil layer of second segment；

Then, the construction of second segment concrete tube wall is carried out, still pre-buried overhanging bar, straight by above-mentioned operation when second segment barrel pours It is finished to Wall Construction.