CN102400470A - Construction method for multi-platform deep foundation of hillside high-rise building - Google Patents

Construction method for multi-platform deep foundation of hillside high-rise building Download PDF

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Publication number
CN102400470A
CN102400470A CN2011102205017A CN201110220501A CN102400470A CN 102400470 A CN102400470 A CN 102400470A CN 2011102205017 A CN2011102205017 A CN 2011102205017A CN 201110220501 A CN201110220501 A CN 201110220501A CN 102400470 A CN102400470 A CN 102400470A
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China
Prior art keywords
scaffold
platform
flat field
bar
hole
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CN2011102205017A
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CN102400470B (en
Inventor
徐平
朱文汇
石立国
袁建华
吴殿昌
邓林峰
余德浩
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China Construction Second Engineering Bureau Co Ltd
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China Construction Second Engineering Bureau Co Ltd
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Priority to CN 201110220501 priority Critical patent/CN102400470B/en
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Publication of CN102400470B publication Critical patent/CN102400470B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a construction method for a multi-platform deep foundation of a hillside high-rise building. A plurality of construction platforms are formed through scaffolds which are erected along a slope, so that a plurality of platform pile holes can be simultaneously dug; and therefore, the coherence of construction steps is enhanced, the construction time is saved, and the construction efficiency is increased. The method is suitable for constructing the deep foundation of the high-rise building at hillside.

Description

The multi-platform deep foundation job practices of hillside fields high-rise building
Technical field
The present invention relates to a kind of foundation construction method, particularly a kind of foundation construction method of building the high-rise building of slope in.
Background technology
For the construction of the multi-platform deep foundation of hillside fields high-rise building, traditional elder generation high sequence of construction efficient in low back is low, can't satisfy construction period.Because when reality is excavated, if adopt sequence of excavation in the past, earlier low foundation construction, low foundation structure, lower waterproof, backfill, back eminence foundation construction, the eminence structure, procedure connection property is poor, long construction period.
Summary of the invention
The purpose of this invention is to provide the multi-platform deep foundation job practices of a kind of hillside fields high-rise building, solve tradition and build long construction period in the Tall Building Foundation construction, the technical problem of procedure connection property difference in the hillside fields.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The multi-platform deep foundation job practices of a kind of hillside fields high-rise building, step is following:
Step 1, smooth flat field place;
Step 2 is carried out the part and is unloaded soil, repairs side slope, forms stable side slope through the side slope mesh plaster between adjacent two flat field places;
Step 3 is carried out the slope position of pile foundation construction and is cut soil in plan, form the shoveling operating platform;
Step 4 is set up scaffold according to the slope between two adjacent flat field places, the horizon bar of scaffold is overhanging and ride on the shoveling operating platform in the position concordant with the shoveling operating platform;
Step 5 gets into the shoveling operating platform through scaffold, on all shoveling operating platforms, carries out a hole excavation and a panelling construction simultaneously;
Step 6, colligation hole digging pile reinforcing bar, supporting template and concreting in the stake hole;
Step 7, treat the pile foundation concrete setting after, backfill between pile foundation.
Said step 4, the step of setting up of scaffold is: (A) leveling compacting bottom flat field place; (B) fill up chock on the ground in the flat field field of leveling compacting; (C) according to design pitch upright vertical rod on chock; (D) in the position apart from flat field place 0.2m, vertical posts is provided with one and encloses the bar of sweeping the floor; (E) along the highly parallel bar of sweeping the floor of vertical rod horizon bar is set at interval, the bar of finally sweeping the floor, horizon bar and vertical rod form scaffold frame; (F) in scaffold frame vertical and horizontal side bridging is set all; (G) safe blanket net is installed on the scaffold below operation layer is walked guidance tape; (H) with the scaffold of shoveling operating platform flush position on completely spread operation layer and walk guidance tape; (I) foot guard plate is set continuously around the layer of corridor; (J) the operation layer altitude range outside completely hangs Dense mesh screen.
In the said step 5, carry out following operation before the excavation of stake hole: the stake excavation that (a) makes an experiment, survey to checking the accuracy of report; (b) survey report, on-the-spot actual geological condition and the requirement of rigidity angle with combining, carry out absolute altitude calculating at the bottom of the stake of hole; (c) combine test pile, survey report and carry out absolute altitude correction at the bottom of the stake of hole.
Compared with prior art the present invention has following characteristics and beneficial effect:
The present invention is through setting up scaffold according to the slope; For multi-platform excavation simultaneously provides the excavation scope of operation; Can realize excavating the stake of hole, many places simultaneously, and in time the soil body transported through the scaffold operation layer, guarantee working security, operability, can satisfy construction period simultaneously, raised the efficiency.
The present invention has excavated construction simultaneously through multi-platform, has avoided traditional hillside fields poor from construct the one by one procedure connection that causes of lower to eminence, and the defective of long construction period has improved efficiency of construction.
The present invention through test pile excavation, hole stake at the bottom of absolute altitude calculate, revise, carry out the stake of multi-platform hole and excavate simultaneously thereby excavate the condition created simultaneously for multi-platform stake hole, guaranteeing to raise the efficiency the reduction of erection time greatly under working security, the operability prerequisite.
The present invention can be widely used in hillside fields highrise building deep foundation construction.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
Fig. 1 is the construction process figure of the method for the invention.
Fig. 2 is that work plane excavation and operating platform are set up sketch map.
Fig. 3 is scaffold embodiment.
Fig. 4 is Fig. 3 A-A sectional view.
Fig. 5 is Fig. 3 lateral view.
Reference numeral: sweep the floor bar, 2.3-horizon bar, 2.4-bridging, 2.5-of 1-flat field place, 2-scaffold, the vertical rod of 2.1-flat field, 2.2-links bar, the vertical rod of 2.6-side slope, 2.7-hound, 2.8-operation platform plate, 3-shoveling operating platform, 4-pile foundation, 5-slope soil.
The specific embodiment
Embodiment is referring to illustrated in figures 1 and 2, the multi-platform deep foundation job practices of a kind of hillside fields high-rise building, and step is following:
Step 1, smooth flat field place 1;
Step 2 is carried out the part and is unloaded soil, repairs side slope, forms stable side slope through the side slope mesh plaster between adjacent two flat field places;
Step 3 is carried out the slope position of pile foundation construction and is cut soil in plan, form shoveling operating platform 3;
Step 4 is set up scaffold 2 according to the slope between two adjacent flat field places, the horizon bar of scaffold is overhanging and ride on the shoveling operating platform 3 in the position concordant with shoveling operating platform 3; Wherein, the step of setting up of scaffold is: (A) leveling compacting bottom flat field place; The vertical rod bottom must flatten in cleaning, and compacting, forbids substrate for loosening the soil.Must dig out the plane during side slope position top vertical rod, carry out chock then and lay.Can build thickness if necessary and be not less than the thick C15 concrete of 60mm, side slope vertical rod position is not less than 600mm apart from the side slope top curve.(B) fill up chock on the ground in the flat field field of leveling compacting; Chock can adopt the elongated setting of the long wooden springboard of the wide 4m of 300mm, or area is not less than the plank place mat that 0.15 ㎡, thickness are not less than 50mm.(C) according to design pitch upright vertical rod on chock; Vertical rod is set up must vertically should have the people to observe in the outside and adjustment during vertical rod.Vertical pole ' s span is following: the vertical rod array pitch is 0.8 ~ 1.0m, and vertical rod is flat, and the vertical joint of vertical rod adopts banjo fixing butt jointing apart from being 1.2m, and joint location staggers 50%, and step pitch is arranged according to 1.5m in principle.(D) in the position apart from flat field place 0.2m, vertical posts is provided with one and encloses the bar of sweeping the floor; The side slope upper pright stanchion should carry out the part and strengthen in the time vertically can not satisfying this condition, the bar perforation setting of strengthening sweeping the floor should not be less than three and stride.(E) along the highly parallel bar of sweeping the floor of vertical rod horizon bar is set at interval, the bar of finally sweeping the floor, horizon bar and vertical rod form scaffold frame; Peripheral rod end exceeds platform absolute altitude 1.2m, and every 600mm is provided with one horizon bar and firmly connects with vertical rod, and seals with wood plywood.(F) in scaffold frame vertical and horizontal side bridging is set all; 45 ° ~ 60 ° at bridging steel pipe angle of inclination, the joint lap length is 1m, joint location adopts 3 rotary buckles to connect.Bridging must be connected with the vertical rod of its process, and the tie point of brace and vertical rod lowest part overhead should not be greater than 500 ㎜.Facade must completely be established bridging outside scaffold, and every striding at a distance from 5 ~ 8 is provided with bridging in the support body, at support body bottom, middle part, tip position, horizontal cross brace is set respectively strengthens.(G) safe blanket net is installed on the scaffold below operation layer is walked guidance tape; (H) with the scaffold of shoveling operating platform flush position on completely spread operation layer and walk guidance tape; Accomplish tight, firm, pave, spread steady, forbidden on the shelf to stay the monolithic scaffold floor, forbidden to have the probe plate, wooden springboard joint location is necessary for two cross bars, wooden springboard stretches out supporting steel pipe length must not be greater than 30mm, the gap must not be greater than 20mm between wooden springboard.The iron wire of colligation must not corrosion.(I) foot guard plate is set continuously around the layer of corridor; It is the plank of 180mm that foot guard plate adopts width, brushes paint red and white, and with iron nail and iron wire fixation.(J) the operation layer altitude range outside completely hangs Dense mesh screen.Dense mesh screen adopts the green Dense mesh screen of the consistent 2m of color and luster * 6m, and the operation layer altitude range outside is full to hang, and is every all firm with pricking the silk colligation with outrigger at a distance from fixing hole.Dense mesh screen hangs necessary stretching, extension, smooth, and the junction is seamless.Forbid to use breakage, contaminated and rotten Dense mesh screen.
Step 5 gets into shoveling operating platform 3 through scaffold 2, on all shoveling operating platforms 3, carries out a hole excavation and a panelling construction simultaneously; Carry out following operation before the excavation of stake hole: the stake excavation that (a) makes an experiment, survey to checking the accuracy of report; (b) survey report, on-the-spot actual geological condition and the requirement of rigidity angle with combining, carry out absolute altitude calculating at the bottom of the stake of hole; (c) combine test pile, survey report and carry out absolute altitude correction at the bottom of the stake of hole.
Step 6, colligation hole digging pile reinforcing bar, supporting template and concreting in the stake hole;
Step 7, treat the pile foundation concrete setting after, backfill between pile foundation.
The form of structure of said scaffold can be and is described below, and referring to Fig. 3~shown in Figure 5, sets up according to slope soil 5 gradients between flat field place 1; The support body of comprise vertical rod, the bar 2.2 of sweeping the floor, horizon bar 2.3 and bridging 2.4 being formed and be laid on the operation platform plate 10 on the support body; Said vertical rod is provided with at interval, and said bar 2.2 vertical posts of sweeping the floor are arranged on the vertical rod bottom, and said horizon bar 2.3 vertical posts are provided with along the vertical rod short transverse at interval; Interplanar that said horizon bar surrounds or the close operation platform plate 10 that is covered with; Said vertical rod comprises flat field vertical rod 2.1 and side slope vertical rod 2.6, and said flat field vertical rod 2.1 is isometric, is arranged on the smooth flat field place 1; Said side slope vertical rod 2.6 is provided with according to the slope soil gradient from the slope soil bottom; Its length is along the slope soil slope change, and said horizon bar 2.3 is near the slope soil section support body of encorbelmenting, and inserts slope soil 5.
Said bridging 2.4 is arranged on the support body side elevation or/and positive facade.
Said support body deviates from the slope soil face and is supported with hound 2.7.
The plane that said horizon bar surrounds is provided with and links bar 2.5.

Claims (3)

1. multi-platform deep foundation job practices of hillside fields high-rise building, it is characterized in that: step is following:
Step 1, smooth flat field place (1);
Step 2 is carried out the part and is unloaded soil, forms stable side slope through the side slope mesh plaster between adjacent two flat field places;
Step 3 is carried out the slope position of pile foundation construction and is cut soil in plan, form shoveling operating platform (3);
Step 4 is set up scaffold (2) according to the slope between two adjacent flat field places, the horizon bar of scaffold is overhanging and ride on the shoveling operating platform (3) in the position concordant with shoveling operating platform (3);
Step 5 gets into shoveling operating platform (3) through scaffold (2), on all shoveling operating platforms (3), carries out a hole excavation and a panelling construction simultaneously;
Step 6, colligation hole digging pile reinforcing bar, supporting template and concreting in the stake hole;
Step 7, treat the pile foundation concrete setting after, backfill between pile foundation.
2. high-rise building multi-platform deep foundation job practices in hillside fields according to claim 1 is characterized in that: said step 4, and the step of setting up of scaffold is: (A) leveling compacting bottom flat field place; (B) fill up chock on the ground in the flat field field of leveling compacting; (C) according to design pitch upright vertical rod on chock; (D) in the position apart from flat field place 0.2m, vertical posts is provided with one and encloses the bar of sweeping the floor; (E) along the highly parallel bar of sweeping the floor of vertical rod horizon bar is set at interval, the bar of finally sweeping the floor, horizon bar and vertical rod form scaffold frame; (F) in scaffold frame vertical and horizontal side bridging is set all; (G) safe blanket net is installed on the scaffold below operation layer is walked guidance tape; (H) with the scaffold of shoveling operating platform flush position on completely spread operation layer and walk guidance tape; (I) foot guard plate is set continuously around the layer of corridor; (J) the operation layer altitude range outside completely hangs Dense mesh screen.
3. high-rise building multi-platform deep foundation job practices in hillside fields according to claim 1 is characterized in that: in the said step 5, carry out following operation before the excavation of stake hole: the stake excavation that (a) makes an experiment, survey to checking the accuracy of report; (b) survey report, on-the-spot actual geological condition and the requirement of rigidity angle with combining, carry out absolute altitude calculating at the bottom of the stake of hole; (c) combine test pile, survey report and carry out absolute altitude correction at the bottom of the stake of hole.
CN 201110220501 2011-08-03 2011-08-03 Construction method for multi-platform deep foundation of hillside high-rise building Expired - Fee Related CN102400470B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103215950A (en) * 2013-05-06 2013-07-24 中国建筑第八工程局有限公司 Pile foundation extension construction method in backfilling area
CN105984018A (en) * 2015-02-09 2016-10-05 任丘市永基建筑安装工程有限公司 Basic construction method for combined mold
CN106013752A (en) * 2016-06-08 2016-10-12 中国建筑第二工程局有限公司 Construction method for movable observation and construction dual-purpose platform
CN111411634A (en) * 2020-03-20 2020-07-14 上海二十冶建设有限公司 Method for manual hole digging pile operation on slope
CN112049116A (en) * 2020-08-20 2020-12-08 韶关市新城兴建筑工程有限公司 Soft soil layer deep foundation pit excavation construction method

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CN101078217A (en) * 2007-06-18 2007-11-28 于明江 Finishing construction method for sandstone hilly land house foundation
CN101148882A (en) * 2007-10-29 2008-03-26 中铁二院工程集团有限责任公司 Stable excavating method for cracked weak rock road cutting high slope
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103215950A (en) * 2013-05-06 2013-07-24 中国建筑第八工程局有限公司 Pile foundation extension construction method in backfilling area
CN103215950B (en) * 2013-05-06 2015-04-29 中国建筑第八工程局有限公司 Pile foundation extension construction method in backfilling area
CN105984018A (en) * 2015-02-09 2016-10-05 任丘市永基建筑安装工程有限公司 Basic construction method for combined mold
CN106013752A (en) * 2016-06-08 2016-10-12 中国建筑第二工程局有限公司 Construction method for movable observation and construction dual-purpose platform
CN111411634A (en) * 2020-03-20 2020-07-14 上海二十冶建设有限公司 Method for manual hole digging pile operation on slope
CN112049116A (en) * 2020-08-20 2020-12-08 韶关市新城兴建筑工程有限公司 Soft soil layer deep foundation pit excavation construction method

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