CN103061521B - Coliseum Steel Cantilever Truss torque type mounting method - Google Patents

Coliseum Steel Cantilever Truss torque type mounting method Download PDF

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Publication number
CN103061521B
CN103061521B CN201310026642.4A CN201310026642A CN103061521B CN 103061521 B CN103061521 B CN 103061521B CN 201310026642 A CN201310026642 A CN 201310026642A CN 103061521 B CN103061521 B CN 103061521B
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China
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steel truss
steel
truss
front support
support post
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CN201310026642.4A
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CN103061521A (en
Inventor
常满祥
罗维成
罗钢
张松江
谭忠莲
秦庆义
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PowerChina Construction Group Ltd
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PowerChina Construction Group Ltd
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Abstract

The present invention relates to a kind of coliseum Steel Cantilever Truss torque type mounting method, its process is, the steel node of front support post is converted to hinged joint, utilize the general principle of lever, utilize front end to lift, rear end applies the method for counterweight and downward tractive force, makes truss integral rotating positioning, and then hinged joint is converted to rigid joint, reach whole lifting object.The method is simple and easy to do, safe and efficient.

Description

Coliseum Steel Cantilever Truss torque type mounting method
Technical field
The present invention relates to a kind of steel truss mounting method being applicable to coliseum awning, particularly a kind of coliseum Steel Cantilever Truss torque type mounting method.
Background technology
African country carries out infrastructure construction at present, relate to the lifting of large-scale steel work, African country or area backward in economy, locality does not have large-scale hanging device, by the cargo hoisting ability of local port and the impact from arrival job site, harbour overland transport condition, some main equipment and large equipment, cannot arrive job site.How to utilize middle-size and small-size lifting appliance to carry out the lifting construction of large-scale steel structure, just become the technical barrier of engineering construction.
Summary of the invention
For solving an above-mentioned difficult problem, present invention employs following technical scheme:
Its operating principle is, the steel node of front support post is converted to hinged joint, utilizes the general principle of lever, utilize front end to lift, rear end applies the method for counterweight and downward tractive force, makes truss integral rotating positioning, and then hinged joint is converted to rigid joint, reach whole lifting object.
The steel truss of the awning of coliseum mostly is inverted triangle form, and has corresponding radian.Steel truss first being carried out merogenesis making (size of merogenesis considers the Lifting Capacity of steel truss crane gear when assembling) on ground, being divided into afterbody, middle part and front portion; Stadium is set up the assembly platform of steel truss, and each several part of steel truss is lifted into assembly platform successively; Steel truss front support column top is provided with jointed shaft, and jointed shaft top is that front support post cuts with scissors, and bottom is cut with scissors under front support post, and jointed shaft between the two realizes being rotatably connected; Be fixedly connected with front support post cuts with scissors by design attitude on the downside of steel truss afterbody, steel truss afterbody is mounted on steel truss assembly platform, and on assembly platform, continuation group is carried out assembled to the mid portion of steel truss and steel truss front portion in order.Install counterweight additional at the rear portion of steel truss afterbody, according to counterweight direct bearing position and truss position of centre of gravity, calculate the quality of counterweight, the counterweight of actual suspension is lighter than the quality calculating counterweight; On the basis of the rear support post of each steel truss, arrange " U " earth anchor, " U " arranges Chain block between earth anchor and steel truss simultaneously.Pull and tighten up Chain block, realize steel truss and rotate around jointed shaft, simultaneously lifting rope is set in the leading section of steel truss front portion, lifts lifting rope by crane gear, auxiliaryly realize steel truss and rotate around jointed shaft; When the rear end of steel truss afterbody rotates the position to contacting with rear support steel column, Chain block continues tension steel truss afterbody, and crane gear continues the end of auxiliary lifting steel truss front portion, and rear end and the rear support steel column of steel truss afterbody are welded to connect.
Steel pipe is adopted to reinforce the column articulated position of front support.The concrete form reinforced is, adopts the steel pipe of internal diameter and the slightly large 2mm of front support post external diameter, is inserted on front support post before truss installa-tion.After Steel Cantilever Truss has lifted, on front support post, under hinge and front support post, hinge is on same vertical axis, is welded the hinged place that the steel pipe socket be inserted in is combined in front support post, thus realizes reinforcing to the column articulated part of front support, formation rigid joint.
Accompanying drawing explanation
Fig. 1 is steel truss lifting schematic diagram;
Fig. 2 is the I magnified partial view of Fig. 1.
1, rear support post, 2, earth anchor, 3, counterweight, 4, front support post, 5, jointed shaft, 61, front support post cuts with scissors, 62, cut with scissors under front support post, 7, assembly platform, 8, steel truss afterbody, 9, steel truss mid portion, 10, steel truss is anterior, and 11, lifting rope, 12, crane gear, 13, Chain block, 14, steel pipe.
Detailed description of the invention
Below in conjunction with accompanying drawing, invention is described in detail, first, steel truss afterbody 8 first carries out merogenesis making (size of merogenesis considers the Lifting Capacity of steel truss crane gear when assembling) on the assembly platform on ground, and front support post 4 configures respectively on front support post and cuts with scissors 62 under hinge 61 and front support post.
Prefabricate and install front support post 4 and rear support steel column 1; Stadium is set up the assembly platform 7 of steel truss, under realizing front support post cutting with scissors 61 and front support post by jointed shaft 5, cuts with scissors the connection of 62.By the afterbody 8 of steel truss and the connection of front support post 4, the other end of the afterbody 8 of steel truss is mounted on steel truss assembly platform 7, and on assembly platform 7, continuation group is to the mid portion 9 of steel truss and steel truss front portion 10, carries out assembled welding in order.
Install counterweight 3 additional at the rear portion of steel truss afterbody, according to counterweight direct bearing position and truss position of centre of gravity, calculate the quality of counterweight, the counterweight of actual suspension is lighter than the quality calculating counterweight; On the basis of the rear support post of each steel truss, arrange " U " earth anchor 2, " U " arranges Chain block 13 between earth anchor and steel truss simultaneously.Pull and tighten up Chain block 13, realize steel truss and rotate around jointed shaft 5, simultaneously lifting rope 11 is set in the leading section of steel truss front portion, lifts lifting rope 11 by crane gear 12, auxiliaryly realize steel truss and rotate around jointed shaft 5; When the rear end of steel truss afterbody 8 rotates the position to contacting with rear support steel column 1, Chain block 13 continues tension steel truss afterbody 8, crane gear 12 continues the end 10 of auxiliary lifting steel truss front portion, and rear end and the rear support steel column 1 of steel truss afterbody 8 are welded to connect.
Adopt steel pipe 14 pairs of front support post hinges 4 to connect position to reinforce.The concrete form reinforced is, adopts the steel pipe 14 of internal diameter and the slightly large 2mm of front support post external diameter, is inserted on front support post 4 before truss installa-tion.After Steel Cantilever Truss has lifted, under front support post cutting with scissors 61 and front support post, hinge 62 is on same vertical axis, the hinged place that the steel pipe 14 be inserted in is linked in front support post is welded, thus realizes the reinforcing to the column articulated part of front support, form rigid joint.
The present invention also can have other variation; as well known to the skilled person; above-described embodiment only plays the exemplary role in foregoing invention protection domain; for those of ordinary skills; in the protection domain that the present invention limits, also have a lot of conventional deformation and other embodiment, these distortion and embodiment are all by within the protection domain that awaits the reply in the present invention.

Claims (1)

1. a coliseum Steel Cantilever Truss torque type mounting method, is characterized in that comprising the steps: that steel truss is first carried out merogenesis making on ground by (1), is divided into afterbody, middle part and front portion; (2) on Stadium, set up the assembly platform of steel truss, and each several part of steel truss is lifted into assembly platform successively; (3) steel truss front support column top is provided with jointed shaft, jointed shaft top is that front support post cuts with scissors, and bottom is cut with scissors under front support post, and jointed shaft between the two realizes being rotatably connected; (4) be fixedly connected with front support post cuts with scissors by the design attitude on the downside of steel truss afterbody, steel truss afterbody is mounted on steel truss assembly platform, and on assembly platform, continuation group is carried out assembled to the mid portion of steel truss and steel truss front portion in order; (5) install counterweight additional at the rear portion of steel truss afterbody, according to counterweight direct bearing position and truss position of centre of gravity, calculate the quality of counterweight, the counterweight of actual suspension is lighter than the quality calculating counterweight; (6) on the basis of the rear support post of each steel truss, arrange " U " earth anchor, " U " arranges Chain block between earth anchor and steel truss simultaneously; (7) pull and tighten up Chain block, realize steel truss and rotate around jointed shaft; (8) lifting rope is set in the leading section of steel truss front portion, lifts lifting rope by crane gear, auxiliary realize steel truss and rotate around jointed shaft; (9) when the rear end of steel truss afterbody rotates the position to contacting with rear support steel column, Chain block continues tension steel truss afterbody, and crane gear continues the end of auxiliary lifting steel truss front portion, and rear end and the rear support steel column of steel truss afterbody are welded to connect; (10) steel pipe is adopted to reinforce the column articulated position of front support; Adopt the steel pipe of internal diameter 2mm larger than front support post external diameter, be inserted on front support post before truss installa-tion; After Steel Cantilever Truss has lifted, front support post cutting with scissors and cuts with scissors under front support post is on same vertical axis, the hinged place that the steel pipe socket being inserted in support column is combined in front support post is welded, thus realizes the reinforcing to the column articulated part of front support, form rigid joint.
CN201310026642.4A 2013-01-24 2013-01-24 Coliseum Steel Cantilever Truss torque type mounting method Active CN103061521B (en)

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Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
CN103410335B (en) * 2013-08-30 2016-01-20 南通八建集团有限公司 Front support post-tensioning large cantilever beam integral embedded type construction method for hanging
CN105297885B (en) * 2015-11-11 2017-12-29 上海十三冶建设有限公司 The be hinged stress check calculation node and its construction method with just tying of Steel corridor
CN111501997A (en) * 2020-04-23 2020-08-07 贵州建工集团第四建筑工程有限责任公司 Steel truss structure construction method applied to stadium
CN113235946B (en) * 2021-06-04 2022-06-21 中国建筑第四工程局有限公司 High-altitude rotation construction method for steel cover shed of large-scale venue
CN113235948B (en) * 2021-06-04 2022-06-07 中国建筑第四工程局有限公司 Spatial vertical rotation construction method for steel structure roof of large-scale venue
CN113235947B (en) * 2021-06-04 2022-06-07 中国建筑第四工程局有限公司 Construction method of ultrahigh large-span huge ribbed space folded plate-shaped grid structure steel shed

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