CN102505860A - Novel Lifting method for irregularly-shaped steel structure member - Google Patents
Novel Lifting method for irregularly-shaped steel structure member Download PDFInfo
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- CN102505860A CN102505860A CN2011103227085A CN201110322708A CN102505860A CN 102505860 A CN102505860 A CN 102505860A CN 2011103227085 A CN2011103227085 A CN 2011103227085A CN 201110322708 A CN201110322708 A CN 201110322708A CN 102505860 A CN102505860 A CN 102505860A
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Abstract
The invention discloses a novel lifting method for an irregularly-shaped steel structure member, and belongs to the technical field of construction and mounting of the irregularly-shaped steel structure member. The method comprises the following steps of: preparing before construction; determining a lifting point of the irregularly-shaped steel structure member, drilling and binding; and turning over the member, shifting, temporarily fixing and correcting. According to the invention, lifting construction of the irregularly-shaped steel structure member is finished by sectioning the irregularly-shaped steel structure member, determining the center of gravity of the irregularly-shaped steel structure member, finding out the position of the lifting point, turning over, shifting and mutually matching a main lift and a secondary lift, so that the construction effects of balance and no turnover during lifting of the irregularly-shaped member are realized; the effect of a process for switching the irregularly-shaped member from a shift state to an in-place state in a narrow field is realized; the switching of lifting states of the member in the air is realized; the member is guaranteed not to turn over during lifting and is arranged in place accurately; and the method has the advantages of convenience in construction, short construction period and high safety.
Description
Technical field
The invention belongs to deformed steel member construction and installation technical field, be specifically related to a kind of hanging method of novel profile iron structural element.
Background technology
At present; Style other style, modern design, to be rich in modernized breath elevation of building more and more; These complicated architectural constructions are handled and are adopted steel work mostly, particularly when facade is designed to arcuate shape, and the special-shaped steel work of employing that its framework is often more; Wherein " 7 " shape, half steel structure member such as font, broken line shape and arc are particularly general, and the profile iron structure is brought big difficulty to construction.The tradition hanging method has following several kinds: 1) bulk-breaking lifting, installation at high altitude, regular member, the difficult control of center of gravity; And elevating capacity can not guarantee, installation at high altitude, whole verticality; The difficult control of the adjacent beams section discrepancy in elevation; Welding quality cannot say for sure to demonstrate,prove, and it is temporary fixed that the bulk-breaking lifting need be set up platform for lining in addition, and installation at high altitude personnel safety on platform for lining cannot say for sure to demonstrate,prove; 2) scene keeps flat assembly unit, the method for integral hoisting construction again.When the engineering construction place was narrow and small, component assembly and installation site were far away, and the distance of member displacement is long, in structure hoisting, is faced with member and is easy to generate the rollover problem.
Summary of the invention
To the problems referred to above that exist in the prior art, the object of the present invention is to provide a kind of hanging method of novel profile iron structural element.
The hanging method of described a kind of novel profile iron structural element is characterized in that comprising the steps:
1) preparation before the construction: put up platform for lining, the profile iron structural element of segmentation is placed on the platform for lining, weld assembly unit, obtain complete profile iron structural element;
2) colligation of profile iron structural element:
A. the profile iron structural element is confirmed the center of gravity of profile iron structural element according to the trimming moment equation, obtain each sectional members center of gravity earlier, ask the center of gravity of whole member at last again;
B. find out hoisting point position: according to position of centre of gravity, make a line perpendicular to geoid and process center of gravity in the member upper end, the crosspoint of this line and profile iron structural element is a suspension centre;
C. the boring of suspension centre: overturn when causing lifting component, when the structure manufacture assembly unit,, on member, punch in advance according to the hoist cable colligation position of profile iron structural element suspension centre because of the colligation displaced;
D. the colligation of profile iron structural element: hoist cable adopts 2 colligations, and the angle of hoist cable and horizontal plane is between 45 °-60 °;
3) standing up of profile iron structural element: the profile iron structural element with main loop wheel machine is good with colligation is propped up,, the member two ends are landed; Then member is winched to the position parallel with building; With 4 cable wind ropes that it is temporary fixed, described member becomes 75-85 ° with ground, decoupling device then;
4) displacement of profile iron structural element: the displacement of standing up the profile iron structural element after stablizing; Carried out by main loop wheel machine, remove cable wind rope before the displacement, the hoisting point position of main loop wheel machine is a step 2) the middle suspension centre of describing; After one section of predetermined direction displacement, undertaken temporary fixed the profile iron structural element that erects by cable wind rope; Again with main loop wheel machine after predetermined direction moves, main loop wheel machine hangs the profile iron structural element once more, and after one section of predetermined direction displacement, is undertaken temporary fixed by cable wind rope; So repeat operation, until arriving predetermined lifting position;
5) colligation of installation suspension centre: adopt 2 steel wire penetrating suspension centre holes to form the colligation of " U " font, the secondary loop wheel machine hoist cable that the control member of colligation simultaneously turns to, described hoist cable colligation connects with snap ring;
6) lifting, high-altitude switching-over: main crane tightens up main suspension hook; Make profile iron structural element upper end liftoff; Continue to handle main suspension hook, hold straight part and big parallel level with both hands to profile iron structural element one, be higher than the capital that needs erection column after; Secondary crane auxiliary part makes the profile iron structural element aim at erection column to shelving a rotation;
7) the profile iron structural element is in place and temporary fixed: main crane, the secondary crane suspension hook that slowly descends synchronously; At first make the bearing of steel member lower end and installation carry out centering; Aligning continued slowly off the hook waits to overlap back insertion pin rapidly; Secondary loop wheel machine decoupling device after fixing the completion, main crane is aimed at capital built-in fitting axis with member upper end flat segments beam and is shelved, and makes temporary fixed of cable wind rope; The contact beam should be installed after each abnormity component is installed later on immediately to be fixed;
8) correction of profile iron structural element is with fixing: avoid measure error, adopt two transit observations during installation, wherein one is parallel to member; Another is placed perpendicular to member; And the distance of placing should be aimed at the back in the welding of member bilateral symmetry greater than member height, main loop wheel machine decoupling device after the top support welding is accomplished; For guaranteeing the installation accuracy of undersetting, Application of Total Station is carried out real-time observing and controlling during whole erection.
The hanging method of described a kind of novel profile iron structural element is characterized in that described profile iron structural element end is equipped with connector.
The hanging method of described a kind of novel profile iron structural element is characterized in that step 2) described in punch position be each 500 ㎜ place, suspension centre both sides, described aperture is less than or equal to 50 ㎜.
The hanging method of described a kind of novel profile iron structural element is characterized in that the described 4 cable wind rope colligation points of step 3) should be positioned at special-shaped component sagitta height 2/3 place, and becomes 45 °～60 ° with the angle on ground, with the component stability that erects.
The hanging method of described a kind of novel profile iron structural element; It is characterized in that two last measuring points of transits observation described in the step 8) are located at the capital of erection column; A transit is erected on the axis; Another stand is located at its upright position, and two directions of observation component simultaneously all coexist on the vertical plane two directions of member.
The hanging method of described a kind of novel profile iron structural element is characterized in that the capital of described erection column is equipped with the bearing that is connected through latch with profile iron structural element end coupling.
Through adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is following:
1) passes through the segmentation of profile iron structural element; Confirm the center of gravity of profile iron structural element; Find out hoisting point position; Through stand up, be shifted and when lifting cooperatively interacting of master's crane, secondary crane accomplish the lifting construction of profile iron structural element, balance when having solved the abnormity component lifting and do not produce the construction difficult problem of upset;
2) the invention solves that abnormity component is transformed into state procedure in place from displaced condition in narrow place, realize the conversion of aerial lifting component form, do not produce upset when guaranteeing lifting component, in place accurately;
3) easy construction of the present invention, the duration is short, safety good.
Description of drawings
Fig. 1 is a platform for lining utilization structure sketch map of the present invention;
Fig. 2 is that center of gravity of the present invention is confirmed the simulation sketch map;
Fig. 3 is a simulation sketch map of being confirmed suspension centre by center of gravity of the present invention;
Fig. 4 is a cable wind rope temporary fixing structure sketch map of the present invention;
Fig. 5 is member of the present invention major-minor crane work structuring reference diagram when in place.
Among the figure: 1-platform for lining, 2-master's crane, 3-hoist cable, 4-profile iron structural element, 5-center of gravity, 6-suspension centre, 7-cable wind rope, 8-stub, the secondary crane of 9-.
The specific embodiment
Below in conjunction with Figure of description and embodiment the present invention is further described:
As shown in the figure, a kind of hanging method of novel profile iron structural element comprises the steps:
1) preparation before the construction: put up an assembly platform 1, the profile iron structural element of segmentation be placed on the platform for lining, convenient welding, weld assembly unit after, obtain complete profile iron structural element 4, as shown in Figure 1;
2) colligation of profile iron structural element:
A. since irregular element in when lifting, center of gravity must overlap with the angular bisector of crane rope with the line of crane hook, promptly the colligation center must be positioned on the vertical line through component gravity center, aloft rotates when avoiding lifting component.The profile iron structural element is confirmed the center of gravity of profile iron structural element according to the trimming moment equation, obtain each sectional members center of gravity earlier, ask the center of gravity of whole member at last again, concrete grammar is following:
At first because the circular arc member is special-shaped shape, we are divided into three sections (two sections linears, a section is the identical circular arc of radius) to the good member of assembly unit, and calculate this focus point of three sections.First, second, third section focus point position is respectively A, B, C; Quality is respectively
; Connect A, B point; The AB distance is
; As shown in Figure 2, then according to the trimming moment equation
Try to achieve the focus point D between A, the B; The DA distance is
; Then with CAD software D point that draws on figure; Connect D, C point; The CD distance is
, according to the trimming moment equation
Try to achieve the focus point E of 3 of A, B, C; The DE distance is
, on CAD figure, tries to achieve the E point then.This focus point E is exactly the focus point of abnormity component so, if abnormity component is a complex component, can complex component be decomposed into the multistage member, and progressively try to achieve focus point according to above trimming moment equation;
B. find out hoisting point position: as shown in Figure 3; According to component gravity center 5 positions; Suspension centre 6 can be positioned on the vertical line through component gravity center; Aloft rotate when avoiding lifting component, also can make a line perpendicular to geoid and process center of gravity in the member upper end, the crosspoint of this line and profile iron structural element is a suspension centre 6;
C. the boring of suspension centre: overturn when causing lifting component because of the colligation displaced; When the structure manufacture assembly unit; Hoist cable 3 colligation positions according to profile iron structural element suspension centre; On member, punch in advance, described punch position is each 500 ㎜ place, suspension centre both sides, and described aperture is less than or equal to 50 ㎜;
D. the colligation of profile iron structural element: hoist cable 3 adopts 2 colligations, and the angle of hoist cable and horizontal plane is between 45 °-60 °, and is as shown in Figure 1;
3) standing up of profile iron structural element: the profile iron structural element 4 with main loop wheel machine 2 is good with colligation is propped up; The member two ends are landed; Then member is winched to the position parallel with building, with 4 cable wind ropes 7 that it is temporary fixed, the other end of cable wind rope 7 is fixed on the stub 8; Described member becomes 75-85 ° of decoupling device then with ground, as shown in Figure 4;
4) displacement of profile iron structural element: the displacement of standing up the profile iron structural element after stablizing; Carried out by main loop wheel machine 2, remove cable wind rope 7 before the displacement, the hoisting point position of main loop wheel machine is a step 2) the middle suspension centre of describing; After one section of predetermined direction displacement, undertaken temporary fixed the profile iron structural element that erects by cable wind rope; Again with main loop wheel machine after predetermined direction moves, main loop wheel machine hangs the profile iron structural element once more, and after one section of predetermined direction displacement, is undertaken temporary fixed by cable wind rope; So repeat operation, until arriving predetermined lifting position;
5) colligation of installation suspension centre: adopt 2 steel wire penetrating suspension centre holes to form the colligation of " U " font, the secondary loop wheel machine hoist cable that the control member of colligation simultaneously turns to, described hoist cable colligation connects with snap ring;
6) lifting, high-altitude switching-over: main crane tightens up main suspension hook; Make profile iron structural element upper end liftoff; Continue to handle main suspension hook, hold straight part and big parallel level with both hands to profile iron structural element one, be higher than the capital that needs erection column after; Secondary crane auxiliary part makes the profile iron structural element aim at erection column to shelving a rotation;
7) the profile iron structural element in place with proofread and correct: main crane 2, secondary crane 9 suspension hook that slowly descends synchronously; At first make steel member lower end and erection column top carry out centering; Aligning continued slowly off the hook waits to overlap back insertion pin rapidly; Secondary loop wheel machine decoupling device after fixing the completion, main crane is aimed at capital built-in fitting axis with member upper end flat segments beam and is shelved, and makes temporary fixed of cable wind rope; The contact beam should be installed after each abnormity component is installed later on immediately fix, as shown in Figure 5;
8) correction of profile iron structural element is with fixing: avoid measure error, adopt two transit observations during installation, wherein one is parallel to member; Another is placed perpendicular to member, and the distance of placing should be aimed at the back and weld in the member bilateral symmetry greater than member height; Main loop wheel machine decoupling device after the top support welding is accomplished, for guaranteeing the installation accuracy of undersetting, Application of Total Station is carried out real-time observing and controlling during whole erection; The capital that measuring point is located at erection column is gone up in described two transits observation, and a transit is erected on the axis, and another stand is located at its upright position; Two directions of observation component simultaneously all coexist on the vertical plane two directions of member.
Claims (6)
1. the hanging method of a novel profile iron structural element is characterized in that comprising the steps:
1) preparation before the construction: put up platform for lining, the profile iron structural element of segmentation is placed on the platform for lining, weld assembly unit, obtain complete profile iron structural element;
2) colligation of profile iron structural element:
A. the profile iron structural element is confirmed the center of gravity of profile iron structural element according to the trimming moment equation, obtain each sectional members center of gravity earlier, ask the center of gravity of whole member at last again;
B. find out hoisting point position: according to position of centre of gravity, make a line perpendicular to geoid and process center of gravity in the member upper end, the crosspoint of this line and profile iron structural element is a suspension centre;
C. the boring of suspension centre: overturn when causing lifting component, when the structure manufacture assembly unit,, on member, punch in advance according to the hoist cable colligation position of profile iron structural element suspension centre because of the colligation displaced;
D. the colligation of profile iron structural element: hoist cable adopts 2 colligations, and the angle of hoist cable and horizontal plane is between 45 °-60 °;
3) standing up of profile iron structural element: the profile iron structural element with main loop wheel machine is good with colligation is propped up,, the member two ends are landed; Then member is winched to the position parallel with building; With 4 cable wind ropes that it is temporary fixed, described member becomes 75-85 ° with ground, decoupling device then;
4) displacement of profile iron structural element: the displacement of standing up the profile iron structural element after stablizing; Carried out by main loop wheel machine, remove cable wind rope before the displacement, the hoisting point position of main loop wheel machine is a step 2) the middle suspension centre of describing; After one section of predetermined direction displacement, undertaken temporary fixed the profile iron structural element that erects by cable wind rope; Again with main loop wheel machine after predetermined direction moves, main loop wheel machine hangs the profile iron structural element once more, and after one section of predetermined direction displacement, is undertaken temporary fixed by cable wind rope; So repeat operation, until arriving predetermined lifting position;
5) colligation of installation suspension centre: adopt 2 steel wire penetrating suspension centre holes to form the colligation of " U " font, the secondary loop wheel machine hoist cable that the control member of colligation simultaneously turns to, described hoist cable colligation connects with snap ring;
6) lifting, high-altitude switching-over: main crane tightens up main suspension hook; Make profile iron structural element upper end liftoff; Continue to handle main suspension hook, hold straight part and big parallel level with both hands to profile iron structural element one, be higher than the capital that needs erection column after; Secondary crane auxiliary part makes the profile iron structural element aim at erection column to shelving a rotation;
7) the profile iron structural element is in place and temporary fixed: main crane, the secondary crane suspension hook that slowly descends synchronously; At first make the bearing of steel member lower end and installation carry out centering; Aligning continued slowly off the hook waits to overlap back insertion pin rapidly; Secondary loop wheel machine decoupling device after fixing the completion, main crane is aimed at capital built-in fitting axis with member upper end flat segments beam and is shelved, and makes temporary fixed of cable wind rope; The contact beam should be installed after each abnormity component is installed later on immediately to be fixed;
8) correction of profile iron structural element is with fixing: avoid measure error, adopt two transit observations during installation, wherein one is parallel to member; Another is placed perpendicular to member; And the distance of placing should be aimed at the back in the welding of member bilateral symmetry greater than member height, main loop wheel machine decoupling device after the top support welding is accomplished; For guaranteeing the installation accuracy of undersetting, Application of Total Station is carried out real-time observing and controlling during whole erection.
2. the hanging method of a kind of novel profile iron structural element according to claim 1 is characterized in that described profile iron structural element end is equipped with connector.
3. the hanging method of a kind of novel profile iron structural element according to claim 1 is characterized in that step 2) described in punch position be each 500 ㎜ place, suspension centre both sides, described aperture is less than or equal to 50 ㎜.
4. the hanging method of a kind of novel profile iron structural element according to claim 1; It is characterized in that the described 4 cable wind rope colligation points of step 3) should be positioned at special-shaped component sagitta height 2/3 place; And become 45 °～60 ° with the angle on ground, with the component stability that erects.
5. the hanging method of a kind of novel profile iron structural element according to claim 1; It is characterized in that two last measuring points of transits observation described in the step 8) are located at the capital of erection column; A transit is erected on the axis; Another stand is located at its upright position, and two directions of observation component simultaneously all coexist on the vertical plane two directions of member.
6. the hanging method of a kind of novel profile iron structural element according to claim 2 is characterized in that the capital of described erection column is equipped with the bearing that is connected through latch with profile iron structural element end coupling.
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| CN102942109A (en) * | 2012-12-07 | 2013-02-27 | 中国建筑第八工程局有限公司 | Hoisting method of multiple profiled prefabricated parts by sharing a lifting rope |
| CN103410333A (en) * | 2013-08-16 | 2013-11-27 | 中国建筑第八工程局有限公司 | Construction method of special-shaped irregular steel structure |
| CN103588081A (en) * | 2012-08-13 | 2014-02-19 | 中国石油天然气集团公司 | Hoisting method for equipment inapplicable to conventional hoisting process |
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| CN102942109A (en) * | 2012-12-07 | 2013-02-27 | 中国建筑第八工程局有限公司 | Hoisting method of multiple profiled prefabricated parts by sharing a lifting rope |
| CN103410333A (en) * | 2013-08-16 | 2013-11-27 | 中国建筑第八工程局有限公司 | Construction method of special-shaped irregular steel structure |
| CN104196245A (en) * | 2014-08-08 | 2014-12-10 | 宝钢钢构有限公司 | Segmented manufacturing and splicing method for large steel tube truss curved beam with variable cross-sections |
| CN104153589A (en) * | 2014-08-27 | 2014-11-19 | 中国建筑第二工程局有限公司 | Roof steel truss lifting point lifting capacity detecting method |
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| CN107188039A (en) * | 2017-06-02 | 2017-09-22 | 中国航发南方工业有限公司 | Overhead trolley combined hanging method |
| CN107188039B (en) * | 2017-06-02 | 2019-02-19 | 中国航发南方工业有限公司 | Overhead trolley combined hanging method |
| CN107237502A (en) * | 2017-06-16 | 2017-10-10 | 中交航局第工程有限公司 | A kind of large-tonnage special-shaped component hoisting |
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