CN100564700C - The job practices of lattice type steel column tower crane pedestal - Google Patents
The job practices of lattice type steel column tower crane pedestal Download PDFInfo
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- CN100564700C CN100564700C CNB2007101646302A CN200710164630A CN100564700C CN 100564700 C CN100564700 C CN 100564700C CN B2007101646302 A CNB2007101646302 A CN B2007101646302A CN 200710164630 A CN200710164630 A CN 200710164630A CN 100564700 C CN100564700 C CN 100564700C
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Abstract
格构式钢柱塔吊基础座的施工方法：在地下挖土施工前，在需要挖土位置打四根钻孔灌注桩，将焊接了由角钢与缀板组成的格构式钢柱的桩钢筋笼浇筑在钻孔灌注桩内，在格构式钢柱顶面安装转换承重钢板，在转换承重钢板上安装塔身基础节，在塔身基础节上安装塔身。在四个格构式钢柱之间及周围挖土，每下挖1-3米在格构式钢柱之间焊接水平剪刀支撑架和垂直剪刀支撑架，挖好基坑后，在基坑底板下用连接承台连接四个格构式钢柱。该施工方法适用性较强，特别适用于受基坑场地限止不能在挖好的基坑内安装塔吊的情况或者基坑开挖前必须在基坑位置安装使用塔吊的情况。用该方法建造的格构式塔吊基础座结构稳定、牢固、安全性较高。
The construction method of the foundation seat of the lattice steel column tower crane: before the underground excavation construction, four bored piles are drilled at the position where the excavation is required, and the pile reinforcement of the lattice steel column composed of angle steel and patch plate is welded. The cage is poured in the bored cast-in-place pile, and the transfer load-bearing steel plate is installed on the top surface of the lattice steel column, the tower body foundation section is installed on the transfer load-bearing steel plate, and the tower body is installed on the tower body foundation section. Excavate the soil between and around the four latticed steel columns, and weld horizontal scissors support frame and vertical scissors support frame between the latticed steel columns for every 1-3 meters. The four latticed steel columns are connected under the base plate with connecting caps. This construction method has strong applicability, and is especially suitable for the situation that the tower crane cannot be installed in the excavated foundation pit due to the restriction of the foundation pit site or the situation that the tower crane must be installed and used in the foundation pit before the excavation of the foundation pit. The structure of the foundation base of the lattice tower crane built by this method is stable, firm and high in safety.
Description
Technical field
The present invention relates to a kind of construction techniques, particularly relate to the job practices of lattice type steel column tower crane pedestal.
Background technology
In the building trade, the vertical transport of the various constructional materialss on the building site is generally finished by tower crane, and whether steadily tower crane when the big object of hoisting weight operation safety, with tower crane pedestal is whether stable direct relation is arranged firmly.The job practices that tower crane pedestal is commonly used is to make a call to earlier four piles in the position of tower crane now, the body of the tower that on formed column foot, connects tower crane then by its pre-embedded bolt, stable inadequately, the safety of tower crane basis seat of building like this, along with rising progressively of building construction height, for keeping the stable of body of the tower, body of the tower is had to adopt and brace bar attachedly is connected with building.In addition, when large-scale basement or multi-storey basement construction, planar dimension is big because base pit engineering has, and cutting depth is dark, and vertical transport is particularly thorny, characteristics such as the construction plant is narrow and small, tower crane usually need be placed in the foundation ditch, during general way, digs the basement earthwork earlier, on the foundation ditch that digs, build tower crane pedestal again after having dug basement foundation ditch, tower crane is installed again.But, after running into foundation ditch and digging, be subjected to the foundation ditch place place restrictions on can not the foundation ditch that digs in tower crane is installed situation, perhaps must install and use the situation of tower crane during excavation of foundation pit in the foundation ditch position, just be not suitable for the method for above-mentioned construction tower crane pedestal.
Summary of the invention
The purpose of this invention is to provide that a kind of applicability is strong, the lattice type steel column tower crane pedestal job practices of easy construction, for realizing this goal of the invention, the technical solution used in the present invention is such:
The job practices of lattice type steel column tower crane pedestal is characterized in that comprising the steps:
1. make a call to the bored pile that matches with the tower crane body of the tower in four positions on the ground;
2. make laced of battened compression member: with four angle bar, two dual-purpose batten plates are welded into column;
3. laced of battened compression member is welded in the pile cages;
The pile cages that 4. will weld laced of battened compression member is cast in the bored pile;
5. at the laced of battened compression member end face conversion load-bearing steel plate is installed;
6. begin underground excavation and construction, between four laced of battened compression member and around cut the earth, dig certain distance under every, cut the bored pile pile concrete, weld horizontal scissors bracing frame between four laced of battened compression member, the vertical scissors bracing frame of welding between per two adjacent laced of battened compression member;
7. after the underground scholar of digging finishes, below the base plate of foundation pit that digs, construct steel concrete and connect cushion cap, four bored piles are linked together, further fix four laced of battened compression member.
Further, 5. above-mentioned steps can install the body of the tower base section afterwards on conversion load-bearing steel plate.
Mounting method between described laced of battened compression member, conversion load-bearing steel plate and the body of the tower base section is: pass conversion load-bearing steel plate and the welding of laced of battened compression member end face angle steel with one end of the anchor bolt on the body of the tower base section, again with laced of battened compression member end face angle steel and the welding of conversion load-bearing steel plate, and between laced of battened compression member side and conversion load-bearing steel plate bottom surface, weld the triangle stiffener, then the body of the tower base section is connected with the anchor bolt other end.
After described body of the tower base section installs, on the body of the tower base section, body of the tower can be installed.
Above-mentioned steps 7. after, aerated concrete building block or coarse sand separation layer can be set connecting between cushion cap and the base plate of foundation pit.
The described step 3. welding method of laced of battened compression member and pile cages is: laced of battened compression member and the bar welding of pile cages master muscle group, its lap length is no less than 3 meters.
Adopt the job practices of above-mentioned lattice type steel column tower crane pedestal, can before soil excavation, install tower crane earlier, the limit is dug the following cubic metre of earth limit of tower crane and is reinforced this tower crane pedestal with vertical support frame and horizontal shore, below base plate of foundation pit, construct steel concrete after foundation ditch digs again and connect cushion cap, further reinforce tower crane pedestal, can also be with already installed tower crane transportation cubic metre of earth when digging following cubic metre of earth of tower crane, this method easy construction, applicability is stronger, must install and use the situation of tower crane when particularly suitable is subjected to foundation ditch place restriction that the situation of tower crane or excavation of foundation pit can not be installed in the foundation ditch that digs in the foundation ditch position.The tower crane pedestal Stability Analysis of Structures of building with this method, firmly, safety is higher.
Description of drawings
Fig. 1 is for building the sectional drawing of the lattice type steel column tower crane pedestal that finishes.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is the B-B sectional drawing of Fig. 1.
Fig. 4 is the connection diagram of conversion load-bearing steel plate and laced of battened compression member.
Fig. 5 is the C-C sectional drawing of Fig. 4.
Fig. 6 is horizontal scissors bracing frame schematic diagram.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, present embodiment is the job practices of lattice type steel column tower crane pedestal, and concrete construction sequence is as follows:
1. make a call to the bored pile 1 that matches with the tower crane body of the tower in four positions on the ground;
2. make laced of battened compression member 3: four angle bar, 8, two dual-purpose batten plates 9 are welded into column;
3. laced of battened compression member 3 and pile cages 2 main muscle are helped the bar welding, its lap length is 3.5 meters;
The pile cages 2 that 4. will weld laced of battened compression member 3 is cast in the bored pile 1;
5. pass conversion load-bearing steel plate 4 and 8 welding of laced of battened compression member 3 end face angle steel with anchor bolt 11 1 ends, again laced of battened compression member end face angle steel 8 and conversion load-bearing steel plate 4 are welded, and between laced of battened compression member 3 sides and conversion load-bearing steel plate 4 bottom surfaces, weld triangle stiffener 10;
6. on conversion load-bearing steel plate 4, the body of the tower base section is installed;
7. the tower crane body of the tower is installed on the body of the tower base section;
8. begin underground excavation and construction, between four laced of battened compression member and around cut the earth, dig certain distance under every, cut the bored pile pile concrete, weld horizontal scissors bracing frame 5 between four laced of battened compression member 3, the vertical scissors bracing frame 6 of welding between per two adjacent laced of battened compression member 3;
9. after the underground scholar of digging finishes, below 12, construct steel concrete and connect cushion cap 7, four bored piles 1 are linked together, further fix four laced of battened compression member at the base plate of foundation pit that digs; 10. between described connection cushion cap 7 and base plate of foundation pit 12, be provided with and add coarse sand separation layer 13.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101646302A CN100564700C (en) | 2007-12-26 | 2007-12-26 | The job practices of lattice type steel column tower crane pedestal |
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| CNB2007101646302A CN100564700C (en) | 2007-12-26 | 2007-12-26 | The job practices of lattice type steel column tower crane pedestal |
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| CN101240550A CN101240550A (en) | 2008-08-13 |
| CN100564700C true CN100564700C (en) | 2009-12-02 |
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| CN102094770A (en) * | 2011-02-23 | 2011-06-15 | 河海大学 | Design method for wind farm foundation |
| CN102134856B (en) * | 2011-04-20 | 2012-05-30 | 天津市建工工程总承包有限公司 | Tower crane foundation |
| CN102587406A (en) * | 2012-03-13 | 2012-07-18 | 中天建设集团有限公司 | Pouring construction method of concrete-filled tower crane foundation lattice column |
| CN102587407A (en) * | 2012-03-23 | 2012-07-18 | 舜元建设(集团)有限公司 | Construction method for tower crane foundation without bearing platform in deep foundation pit |
| CN103195076B (en) * | 2013-03-28 | 2016-03-09 | 中国建筑第八工程局有限公司 | Muddy Bottoms deep-excavation tower crane foundation construction method |
| CN103498482A (en) * | 2013-09-30 | 2014-01-08 | 上海建工七建集团有限公司 | Three-pile lattice type combined tower crane foundation structure |
| CN106495028A (en) * | 2015-09-08 | 2017-03-15 | 上海宝冶集团有限公司 | Tower crane conversion method for assembled architecture construction |
| CN105888265A (en) * | 2016-03-01 | 2016-08-24 | 中国建筑第六工程局有限公司 | Steel structure provisional measure latticed column butt junction location device and method |
| CN105951869B (en) * | 2016-05-31 | 2017-12-15 | 中国一冶集团有限公司 | A kind of construction method of the not reserved construction joint Tower Crane Foundation by Steel Lattice Column of underground garage |
| CN106480901B (en) * | 2016-09-29 | 2020-02-07 | 舜元建设(集团)有限公司 | Precise positioning method for lattice type steel stand column |
| CN107190764A (en) * | 2017-04-29 | 2017-09-22 | 中国能源建设集团安徽电力建设第工程有限公司 | A kind of booster stations building foundation construction method |
| CN107963545A (en) * | 2017-11-24 | 2018-04-27 | 中国二冶集团有限公司 | Installation method, method for dismounting and the mast-up of vertical storage tank |
| CN108086344A (en) * | 2017-12-20 | 2018-05-29 | 中铁十局集团城市轨道交通工程有限公司 | A kind of lattice type tower crane foundation structure and construction method |
| CN108277818A (en) * | 2018-03-22 | 2018-07-13 | 中国电建市政建设集团有限公司 | Basement top-down method Combined tower crane foundation structure and construction method |
| CN110374128B (en) * | 2019-08-14 | 2024-03-08 | 中铁二院工程集团有限责任公司 | Bearing platform type pile structure and construction method thereof |
| CN114439256A (en) * | 2022-02-17 | 2022-05-06 | 连云港绿色动力新能源发展有限公司 | Combined hoisting platform and construction method thereof |
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2007
- 2007-12-26 CN CNB2007101646302A patent/CN100564700C/en active Active
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| CN101240550A (en) | 2008-08-13 |
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Address after: 310016 Great Wall Building, No. 60 Leiting Road, Shangcheng District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang three Construction Group Co., Ltd. Address before: 310009 Building No. 8, Meihua Stele, Hangzhou City, Zhejiang Province Patentee before: Zhejiang Changcheng Construction Group Co., Ltd. |