CN104074364A - Steel casting funnel-shaped structure pre-assembling positioning construction method - Google Patents
Steel casting funnel-shaped structure pre-assembling positioning construction method Download PDFInfo
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- CN104074364A CN104074364A CN201310102864.XA CN201310102864A CN104074364A CN 104074364 A CN104074364 A CN 104074364A CN 201310102864 A CN201310102864 A CN 201310102864A CN 104074364 A CN104074364 A CN 104074364A
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Abstract
The invention relates to the field of building engineering, and discloses a steel casting funnel-shaped structure pre-assembling positioning construction method, which comprises the following construction work procedures that: after the manufacturing of steel casting components is completed, pre-assembling is carried out in a processing site, so flaws on the integral appearance of steel castings and difficult problems in the splicing process are trimmed and solved in factories; and then, the integral installation precision of the whole steel casing building is ensured through the special measurement and positioning installation technology in the construction sites. The construction technology has the advantages that the splicing precision of the medium-and-large-sized steel castings can be perfectly improved; detours are avoided in the similar structure construction in future; the construction progress is accelerated; the engineering quality is improved; the construction safety is ensured; and the economic cost is effectively saved.
Description
Technical field
The present invention relates to building engineering field, relate in particular to the pre-assembled steel member positioning construction method of a kind of bucket type.
Background technology
Along with the economic development of China, large building arises at the historic moment, the building of increasing steel work is rised sheer from level ground, in construction, assembled, the location construction of steel work is an important engineering node, steel work is in the past more regular, be generally i iron, it connects, and location is relatively easy and oneself is ripe.And assembled, the welding between some large-scale steel-castings and steel-casting at present, especially form huge special-shaped cast steel structure such as funnel type steel work with multiple steel-castings, constructional difficulties is higher, effective construction and assembling method are few especially, are current construction Difficulties urgently to be resolved hurrily.
Summary of the invention
In order to solve above technical problem, the invention provides the pre-splicing dress positioning construction method of a kind of steel-casting funnel type structure.It is characterized in that being formed by the following step: (1) steel-casting assembled in advance, lay 20mm thickness steel plate in assembled effective coverage, on steel plate, carry out that bearing is fixed and labeling projection coordinate position, on steel plate, place four H shaped steel along bearing, and be linked to be entirety, (2) plane moulding bed is set on the ground, adjacent steel-casting is carried out to ground assembling, and welding junction scab, appropriate position welded and installed hanger on the surface of steel-casting, at four baffle plates of welding suitable for reading of every joint steel-casting, (3) before assembled, first carry out setting up of scaffold, as the first support system of member, in corresponding height, constructor's operating platform is set simultaneously, (4) after scaffold setting completes, determine the position of column and ground support node according to figure paper size, projection goes out first position of inner side point topmost on the ground simultaneously.(5) in the time of first segment member in place, first choose one of them as reference for installation, check in turn radial distance and the hoop distance of all the other members and this reference feature, to determine the accurate location of member.(6) bearing place adopts otic placode and H shaped steel basis to be welded and fixed, and steel-casting and base plate carry out spot welding in part.When otic placode welding, (7) first segment in place and fixing after, need adjust according to member position the height of local support scaffold, as the vertical supporting of member, arrange at least together radially and hoop rigid support simultaneously, strengthen its stability, according to above identical operation sequence, carry out the in place of the second, three joint member.(8) again carrying out size checks, the elements of a fix point providing according to design, to high process control, adopt level gauge to measure, hoop positioning control takes anchor point to project on ground, relend the method that helps tape measure to check, for the deviation off-gage phenomenon occurring in compound nucleus process, adjust with jack, jack, be as the criterion until meet the demands, after all process steps such as (9) all completes, against assembled process, splice point bolt dismantled, the assembled otic placode welding on member need not cut off, and keeps on-site consolidation and uses.(10) after member has been dismantled, remove support scaffolding and other supports simultaneously, to again set up the support system that meets the assembled requirement of second segment, simultaneously to the H shaped steel of laying on steel plate surface adjust (11) second segment the assembled top using first paragraph one joint steel-casting as second segment bottommost one joint come assembled second segment, (12) repeating step (1) to (9) until all segmentations all complete, (13) steel-casting of pre-installing and dismantling is transported to on-the-spot installation, location, (14) full hall pin hand for on-the-spot construction pin hand getting, the same steel-casting installation location construction of setting up of full hall pin hand is synchronously carried out, set up certain altitude, one joint steel-casting is installed, then continue to set up and continue to construct, (15) after each joint steel-casting is in place, adopt and be welded to connect otic placode in butt weld place of each steel-casting temporarily, temporary fixed with high-strength bolt, adjust after position dimension, tight a bolt, (16) measurement of steel-casting absolute altitude relies on a measurement observation platform is set in center, the cast steel member that is centered around surrounding is accomplished to all standing, observation platform promotes along with the lifting of steel-casting setting height(from bottom), (17) measurement of steel-casting installation site adopts total powerstation chord position to measure outside member, prism set-point is set when measurement on steel-casting corner angle, designer provides the three-dimensional coordinate of this point to proofread and correct for in-site measurement, (18) after each steel-casting in same plane is all proofreaied and correct, immediately steel-casting radially and be arranged circumferentially rigid support, guarantee its resistance to overturning, (19) steel-casting welding, (20) repeat above-mentioned steps (15) to (19) until all installation welding is complete.
The present invention compared with prior art has following beneficial effect:
The invention provides the pre-splicing dress positioning construction method of a kind of steel-casting funnel type structure, can in the time of pre-installation, find in time and solve the problem of steel-casting in splicing, in construction, avoid detours, accelerating construction progress, improve workmanship, guarantee construction safety, effectively save financial cost, ensure in the time of practice of construction, can by overall large cast steel member assembled accurately.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, does not form inappropriate limitation of the present invention, in the accompanying drawings:
Fig. 1 is the general structure design sketch of large cast steel member of the present invention,
Fig. 2 is that the installation on ground in the present invention is laid steel plate and shaped steel schematic diagram,
Fig. 3 is the schematic diagram of pre-assembled segmentation of the present invention,
Fig. 4 is the scaffold floor map in pre-assembled segmentation of the present invention,
Rigid support schematic diagram when Fig. 5 is actual installation of the present invention,
Instrumentation plan when Fig. 6 is actual installation of the present invention,
The overall construction drawing of construction scaffolding when Fig. 7 is actual installation of the present invention and large cast steel member.
Detailed description of the invention
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
The present embodiment provides a kind of steel-casting funnel type structure pre-splicing dress positioning construction method
(1) steel-casting is assembled in advance, lay 20mm thickness steel plate in assembled effective coverage, on steel plate, carry out that bearing is fixed and labeling projection coordinate position, on steel plate, place four H shaped steel along bearing, and be linked to be entirety, (2) plane moulding bed is set on the ground, adjacent steel-casting is carried out to ground assembling, and welding junction scab, appropriate position welded and installed hanger on the surface of steel-casting, at four baffle plates of welding suitable for reading of every joint steel-casting, (3) before assembled, first carry out setting up of scaffold, as the first support system of member, in corresponding height, constructor's operating platform is set simultaneously, (4) after scaffold setting completes, determine the position of column and ground support node according to figure paper size, projection goes out first position of inner side point topmost on the ground simultaneously.(5) in the time of first segment member in place, first choose one of them as reference for installation, check in turn radial distance and the hoop distance of all the other members and this reference feature, to determine the accurate location of member.(6) bearing place adopts otic placode and H shaped steel basis to be welded and fixed, and steel-casting and base plate carry out spot welding in part.When otic placode welding, (7) first segment in place and fixing after, need adjust according to member position the height of local support scaffold, as the vertical supporting of member, arrange at least together radially and hoop rigid support simultaneously, strengthen its stability, according to above identical operation sequence, carry out the in place of the second, three joint member.(8) again carrying out size checks, the elements of a fix point providing according to design, to high process control, adopt level gauge to measure, hoop positioning control takes anchor point to project on ground, relend the method that helps tape measure to check, for the deviation off-gage phenomenon occurring in compound nucleus process, adjust with jack, jack, be as the criterion until meet the demands, after all process steps such as (9) all completes, against assembled process, splice point bolt dismantled, the assembled otic placode welding on member need not cut off, and keeps on-site consolidation and uses.(10) after member has been dismantled, remove support scaffolding and other supports simultaneously, to again set up the support system that meets the assembled requirement of second segment, simultaneously to the H shaped steel of laying on steel plate surface adjust (11) second segment the assembled top using first paragraph one joint steel-casting as second segment bottommost one joint come assembled second segment, (12) repeating step (1) to (9) until all segmentations all complete, (13) steel-casting of pre-installing and dismantling is transported to on-the-spot installation, location, (14) full hall pin hand for on-the-spot construction pin hand getting, the same steel-casting installation location construction of setting up of full hall pin hand is synchronously carried out, set up certain altitude, one joint steel-casting is installed, then continue to set up and continue to construct, (15) after each joint steel-casting is in place, adopt and be welded to connect otic placode in butt weld place of each steel-casting temporarily, temporary fixed with high-strength bolt, adjust after position dimension, tight a bolt, (16) measurement of steel-casting absolute altitude relies on a measurement observation platform is set in center, the cast steel member that is centered around surrounding is accomplished to all standing, observation platform promotes along with the lifting of steel-casting setting height(from bottom), (17) measurement of steel-casting installation site adopts total powerstation chord position to measure outside member, prism set-point is set when measurement on steel-casting corner angle, designer provides the three-dimensional coordinate of this point to proofread and correct for in-site measurement, (18) after each steel-casting in same plane is all proofreaied and correct, immediately steel-casting radially and be arranged circumferentially rigid support, guarantee its resistance to overturning, (19) steel-casting welding, (20) repeat above-mentioned steps (15) to (19) until all installation welding is complete.
The technical scheme above embodiment of the present invention being provided is described in detail, applied principle and the embodiment of specific case to the embodiment of the present invention herein and set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the present invention; , for one of ordinary skill in the art, according to the embodiment of the present invention, in detailed description of the invention and range of application, all will change, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (1)
1. the pre-splicing dress positioning construction method of steel-casting funnel type structure.It is characterized in that being formed by the following step: (1) steel-casting assembled in advance, lay 20mm thickness steel plate in assembled effective coverage, on steel plate, carry out that bearing is fixed and labeling projection coordinate position, on steel plate, place four H shaped steel along bearing, and be linked to be entirety, (2) plane moulding bed is set on the ground, adjacent steel-casting is carried out to ground assembling, and welding junction scab, appropriate position welded and installed hanger on the surface of steel-casting, at four baffle plates of welding suitable for reading of every joint steel-casting, (3) before assembled, first carry out setting up of scaffold, as the first support system of member, in corresponding height, constructor's operating platform is set simultaneously, (4) after scaffold setting completes, determine the position of column and ground support node according to figure paper size, projection goes out first position of inner side point topmost on the ground simultaneously.(5) in the time of first segment member in place, first choose one of them as reference for installation, check in turn radial distance and the hoop distance of all the other members and this reference feature, to determine the accurate location of member.(6) bearing place adopts otic placode and H shaped steel basis to be welded and fixed, and steel-casting and base plate carry out spot welding in part.When otic placode welding, (7) first segment in place and fixing after, need adjust according to member position the height of local support scaffold, as the vertical supporting of member, arrange at least together radially and hoop rigid support simultaneously, strengthen its stability, according to above identical operation sequence, carry out the in place of the second, three joint member.(8) again carrying out size checks, the elements of a fix point providing according to design, to high process control, adopt level gauge to measure, hoop positioning control takes anchor point to project on ground, relend the method that helps tape measure to check, for the deviation off-gage phenomenon occurring in compound nucleus process, adjust with jack, jack, be as the criterion until meet the demands, after all process steps such as (9) all completes, against assembled process, splice point bolt dismantled, the assembled otic placode welding on member need not cut off, and keeps on-site consolidation and uses.(10) after member has been dismantled, remove support scaffolding and other supports simultaneously, to again set up the support system that meets the assembled requirement of second segment, simultaneously to the H shaped steel of laying on steel plate surface adjust (11) second segment the assembled top using first paragraph one joint steel-casting as second segment bottommost one joint come assembled second segment, (12) repeating step (1) to (9) until all segmentations all complete, (13) steel-casting of pre-installing and dismantling is transported to on-the-spot installation, location, (14) full hall pin hand for on-the-spot construction pin hand getting, the same steel-casting installation location construction of setting up of full hall pin hand is synchronously carried out, set up certain altitude, one joint steel-casting is installed, then continue to set up and continue to construct, (15) after each joint steel-casting is in place, adopt and be welded to connect otic placode in butt weld place of each steel-casting temporarily, temporary fixed with high-strength bolt, adjust after position dimension, tight a bolt, (16) measurement of steel-casting absolute altitude relies on a measurement observation platform is set in center, the cast steel member that is centered around surrounding is accomplished to all standing, observation platform promotes along with the lifting of steel-casting setting height(from bottom), (17) measurement of steel-casting installation site adopts total powerstation chord position to measure outside member, prism set-point is set when measurement on steel-casting corner angle, designer provides the three-dimensional coordinate of this point to proofread and correct for in-site measurement, (18) after each steel-casting in same plane is all proofreaied and correct, immediately steel-casting radially and be arranged circumferentially rigid support, guarantee its resistance to overturning, (19) steel-casting welding, (20) repeat above-mentioned steps (15) to (19) until all installation welding is complete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310102864.XA CN104074364A (en) | 2013-03-28 | 2013-03-28 | Steel casting funnel-shaped structure pre-assembling positioning construction method |
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| CN201310102864.XA CN104074364A (en) | 2013-03-28 | 2013-03-28 | Steel casting funnel-shaped structure pre-assembling positioning construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763152A (en) * | 2015-04-28 | 2015-07-08 | 中国十九冶集团有限公司 | Construction method of steel structure water tower basket support |
| CN106960110A (en) * | 2017-04-12 | 2017-07-18 | 中国二十二冶集团有限公司 | The connection method of steel-casting comprising multinode |
| CN113089820A (en) * | 2021-04-09 | 2021-07-09 | 上海通正铝结构建设科技有限公司 | Construction method of single-layer oblique-crossing special-shaped curved surface aluminum alloy structure in limited space |
| CN113154422A (en) * | 2021-04-14 | 2021-07-23 | 山东国舜建设集团有限公司 | Construction process for adding baffle door to steel chimney and chimney structure thereof |
| CN113323153A (en) * | 2021-06-08 | 2021-08-31 | 中国建筑第八工程局有限公司 | Bending-twisting aluminum alloy structure in existing complex space and construction method |
| CN115506606A (en) * | 2022-10-28 | 2022-12-23 | 中国二十二冶集团有限公司 | Construction method for central steel column of high formwork of tubular structure |
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| CN102108788A (en) * | 2010-12-31 | 2011-06-29 | 华煜建设集团有限公司 | Method for constructing hanging in the air large-span support |
| CN102864936A (en) * | 2012-10-10 | 2013-01-09 | 江苏南通六建建设集团有限公司 | Combination lifting construction method for large-scale high hollow building roof of steel structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763152A (en) * | 2015-04-28 | 2015-07-08 | 中国十九冶集团有限公司 | Construction method of steel structure water tower basket support |
| CN106960110A (en) * | 2017-04-12 | 2017-07-18 | 中国二十二冶集团有限公司 | The connection method of steel-casting comprising multinode |
| CN113089820A (en) * | 2021-04-09 | 2021-07-09 | 上海通正铝结构建设科技有限公司 | Construction method of single-layer oblique-crossing special-shaped curved surface aluminum alloy structure in limited space |
| CN113154422A (en) * | 2021-04-14 | 2021-07-23 | 山东国舜建设集团有限公司 | Construction process for adding baffle door to steel chimney and chimney structure thereof |
| CN113323153A (en) * | 2021-06-08 | 2021-08-31 | 中国建筑第八工程局有限公司 | Bending-twisting aluminum alloy structure in existing complex space and construction method |
| CN115506606A (en) * | 2022-10-28 | 2022-12-23 | 中国二十二冶集团有限公司 | Construction method for central steel column of high formwork of tubular structure |
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