CN105297773A - Reverse construction method earth excavation method capable of reducing cover-excavation earth volume - Google Patents
Reverse construction method earth excavation method capable of reducing cover-excavation earth volume Download PDFInfo
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- CN105297773A CN105297773A CN201510734717.3A CN201510734717A CN105297773A CN 105297773 A CN105297773 A CN 105297773A CN 201510734717 A CN201510734717 A CN 201510734717A CN 105297773 A CN105297773 A CN 105297773A
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Abstract
The invention discloses a reverse construction method earth excavation method capable of reducing the cover-excavation earth volume. The method includes the following steps that firstly, a basement first layer is excavated to a certain position below the elevation of the basement first layer, and a ramp for vehicles to go in and out is reserved; secondly, a basement first layer bottom plate and a basement first layer top plate are constructed, and structures of the basement first layer bottom plate and the basement first layer top plate are completed; thirdly, earthwork of a basement second layer and earthwork of a basement third layer are excavated; fourthly, a basement third layer bottom plate is constructed firstly, then, a basement second layer bottom plate is constructed, the basement second layer is excavated at the same time, and construction of the structure of the basement second layer is completed; fifthly, the basement third layer is excavated, and construction of the structure of the basement third layer is completed; and sixthly, the overall structure of a basement is completed in a similar manner. According to the reserve construction method earth excavation method, safety of a foundation pit is ensured, meanwhile, the earth excavation efficiency is improved, the underground excavation earth volume is greatly reduced, construction cost is greatly reduced, and a construction period is greatly shortened.
Description
Technical field
The invention belongs to Top-down Construction Technique field, particularly relate to a kind of top-down method earth excavation method reducing lid earth excavation amount.
Background technology
Top-down Construction Technique is as a ripe Foundation Pit Construction technology, nowadays large-scale multi-storey basement deep foundation ditch has been widely used in, relative to traditional suitable practice open type construction, reverse construction digs owing to taking lid, soil excavation difficulty of construction is large, and efficiency is low, and soil excavation is a key link in reverse construction, the efficiency of top-down method earth excavation, directly determining contrary sequence method could successful Application.Adopt full-reverse method relative conventional construction method total lever factor of constructing to reduce, but the earthwork need be covered and dug, soil excavation difficulty strengthens, and the duration of basement part will extend relatively.Although semi-inverse method has drawn the advantage of the suitable practice and contrary sequence method, but still exist and inverse make district's area and the still larger problem of lid earth excavation amount.
Summary of the invention
The object of the present invention is to provide a kind of top-down method earth excavation method reducing lid earth excavation amount, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, present invention employs following technical scheme:
Reduce a top-down method earth excavation method for lid earth excavation amount, comprise the following steps:
S1, elder generation are according to geologic information and main body basement structure plan, determine that soil outlet reserved location and foundation ditch surrounding reserve back-pressure soil width and the gradient, then excavate basement first floor to the following certain position place of basement first floor absolute altitude and the reserved ramp for earth-working vehicles turnover;
S2, construction basement first floor base plate and basement first floor top board, and excavate surrounding and reserve back-pressure soil, complete basement first floor base plate and basement first floor top board structure, form twice and support;
S3, the excavation basement second layer, the earthwork of basement third layer, the back-pressure soil of one fixed width, down to foundation ditch ground, is reserved in reserved ramp simultaneously around foundation ditch;
S4, first construction basement third layer base plate, then basement second layer base plate of constructing, excavate the basement second layer and reserved back-pressure soil simultaneously, complete basement second layer structure construction;
S5, excavation basement third layer also reserved back-pressure soil, completes basement third layer structure construction;
S6, complete basement overall structure by that analogy.
Compared with prior art, beneficial effect of the present invention is as follows:
The method that the present invention proposes, the basement first floor adopts heavy excavation mode, and meanwhile, earth moving plant directly can enter foundation ditch from reserved ramp, improves shoveling efficiency while ensure that deep pit monitor; The excavation basement second layer, third layer make this part soil excavation still be equivalent to open cut simultaneously, greatly reduce tunneling earth volume; Before the excavation basement second layer, the third layer earthwork, basement first floor top board and base plate have been constructed, form twice inner support, compared to stepping type basin excavation in the past, reduce foundation ditch surrounding remaining soils width, be equivalent to decrease tunneling earth volume.The medium-and-large-sized earth moving plant of whole Excavation Process all enters excavation of foundation pit by reserved ramp and loads transport, and operating expenses and duration all greatly reduce.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after completing of step S1.
Fig. 2 is the schematic diagram after completing of step S2.
Fig. 3 is the schematic diagram after completing of step S3.
Fig. 4 is the schematic diagram after completing of step S5.
Detailed description of the invention
Below in conjunction with embodiment, preferred embodiment of the present invention is described in further detail.
As shown in Figure 1, a kind of top-down method earth excavation method reducing lid earth excavation amount, comprises the following steps:
S1, elder generation are according to geologic information and main body basement structure plan, determine that soil outlet reserved location and foundation ditch surrounding reserve back-pressure soil width and the gradient, then excavate the following certain position place of basement first floor 1 to basement first floor 1 absolute altitude and the reserved ramp for earth-working vehicles turnover.
S2, construction basement first floor base plate 11 and basement first floor top board 12, and excavate surrounding and reserve back-pressure soil, complete basement first floor base plate 11 and basement first floor top board 12 structure, form twice and support.
S3, the excavation basement second layer 2, basement third layer 3 cubic metres of earth, the back-pressure soil of one fixed width, down to foundation ditch ground, is reserved in reserved ramp simultaneously around foundation ditch.
S4, first construction basement third layer base plate 31, then basement second layer base plate 21 of constructing, excavate the basement second layer 2 and reserved back-pressure soil simultaneously, complete the basement second layer 2 structure construction.
S5, excavation basement third layer 3 also reserved back-pressure soil, completes basement third layer 3 structure construction.
S6, complete basement overall structure by that analogy.
The present invention proposes a kind of top-down method earth excavation method reducing lid earth excavation amount, first heavy excavation basement first floor 1 cubic metre of earth is to basement first floor base plate less than 11 certain position place and construct basement first floor top board 12 and basement first floor base plate 11; Secondly, the disposable excavation basement second layer 2, basement third layer 3 cubic metres of earth; Then construction basement second layer base plate 21 and corresponding construction is made from basement third layer base plate 31 is up suitable; Finally excavate the back-pressure soil that the basement second layer 2, basement third layer 3 foundation ditch surrounding are reserved, complete the basement second layer 2, basement third layer 3 is constructed.The present invention reduces lid earth excavation amount, improve shoveling and unearthed efficiency, saved duration and cost.
Above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (1)
1. can reduce a top-down method earth excavation method for lid earth excavation amount, it is characterized in that, comprise the following steps:
S1, elder generation are according to geologic information and main body basement structure plan, determine that soil outlet reserved location and foundation ditch surrounding reserve back-pressure soil width and the gradient, then excavate basement first floor (1) to the following certain position place of basement first floor (1) absolute altitude and the reserved ramp for earth-working vehicles turnover;
S2, construction basement first floor base plate (11) and basement first floor top board (12), and excavate surrounding and reserve back-pressure soil, complete basement first floor base plate (11) and basement first floor top board (12) structure, form twice and support;
S3, the excavation basement second layer (2), basement third layer (3) earthwork, the back-pressure soil of one fixed width, down to foundation ditch ground, is reserved in reserved ramp simultaneously around foundation ditch;
S4, first construction basement third layer base plate (31), then basement second layer base plate (21) of constructing, excavate the basement second layer (2) and reserved back-pressure soil simultaneously, complete the basement second layer (2) structure construction;
S5, excavation basement third layer (3) reserved back-pressure soil, complete basement third layer (3) structure construction;
S6, complete basement overall structure by that analogy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510734717.3A CN105297773A (en) | 2015-10-30 | 2015-10-30 | Reverse construction method earth excavation method capable of reducing cover-excavation earth volume |
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| CN201510734717.3A CN105297773A (en) | 2015-10-30 | 2015-10-30 | Reverse construction method earth excavation method capable of reducing cover-excavation earth volume |
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| CN105297773A true CN105297773A (en) | 2016-02-03 |
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| CN105926669A (en) * | 2016-04-29 | 2016-09-07 | 广州地铁设计研究院有限公司 | Construction method of subway station |
| CN106284410A (en) * | 2016-08-27 | 2017-01-04 | 廊坊师范学院 | The complete rapid constructing method of covered back-digging subway transfer station |
| CN106320377A (en) * | 2016-08-31 | 2017-01-11 | 中铁二局工程有限公司 | Water-rich soft soil area deep foundation pit cover and excavation top-down construction method |
| CN106436785A (en) * | 2016-11-08 | 2017-02-22 | 重庆市基础工程有限公司 | Side slope rescuing counter pressure adverse construction method and structure thereof |
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| CN106320377A (en) * | 2016-08-31 | 2017-01-11 | 中铁二局工程有限公司 | Water-rich soft soil area deep foundation pit cover and excavation top-down construction method |
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| CN106436785A (en) * | 2016-11-08 | 2017-02-22 | 重庆市基础工程有限公司 | Side slope rescuing counter pressure adverse construction method and structure thereof |
| CN106436785B (en) * | 2016-11-08 | 2019-04-26 | 重庆市基础工程有限公司 | Insuring highway' slope back-pressure reversed construction method and its structure |
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Application publication date: 20160203 |