CN103912128B - The construction method of high-altitude disjunctor steel truss - Google Patents
The construction method of high-altitude disjunctor steel truss Download PDFInfo
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- CN103912128B CN103912128B CN201410070549.8A CN201410070549A CN103912128B CN 103912128 B CN103912128 B CN 103912128B CN 201410070549 A CN201410070549 A CN 201410070549A CN 103912128 B CN103912128 B CN 103912128B
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Abstract
The construction method of <b> high-altitude disjunctor steel truss, comprises the steps: A, pre-buried supporting member; B, build steelframe protective platform; C, lifting steelframe protective platform welding with supporting member; D, steelframe protective platform is built into movable platform; E, lifting bottom girder; F, on the girder of bottom sectionally smooth join load-bearing Bailey bracket, the Bailey bracket end winding support of splicing, on the steel work of both sides building body, forms Bailey bracket operating platform; G, on Bailey bracket operating platform, build other steel beam column of steel truss; After H, steel truss integral construction complete, cutting supporting member, by the lifting of steelframe protective platform to ground.The present invention adopts the mode of directly lifting to install steelframe protective platform, thus forms the security platform for equipment and workman's activity at construction location, and its construction method is simple, can improve efficiency of construction, shorten the construction period; In addition, adopt the load-bearing of Bailey bracket operating platform, can construction intensity be guaranteed.</b>
Description
Technical field
The present invention relates to technical field of buildings, be specifically related to the construction method of a kind of high-altitude disjunctor steel truss.
Background technology
In recent years, occurred the building of more high-altitude conjoined structure, these buildings, when constructing, normally first carry out both sides major structure of construction construction, then, between building body top, both sides, build vestibule.
At present, the mode that the build process of skybridge normally adopts tradition to build console mode support system or Integral lifting and slippage is carried out, particularly, between the building body of both sides, scaffold is overlapped from ground, scaffold is built to vestibule preposition, scaffold forms one for place apparatus and for the carrying platform that constructor stands, facade protection is set in carrying platform side; Complete after carrying platform builds, equipment and workman construct on carrying platform, between the building body of both sides, build steel truss, form the body pillar structure of skybridge, then based on steel truss, carry out the building subsequent construction such as board installation, curtain wall construction, complete building of vestibule.This employing scaffolds erecting the construction method of having assisted high-altitude disjunctor steel truss to build, although can construction safety be guaranteed, but, the process of building and removing scaffold comparatively bothers, the duration that whole vestibule is built is longer, both sides building body span and highly larger time, the bulk strength of scaffold is relatively low, and potential safety hazard is comparatively serious and cost is higher.Therefore, limit the tonnage of construction equipment on carrying platform, some main equipments also need to settle by other means.The mounting method of Integral lifting and integral slipping is then, ground in advance assembled complete after, by large-tonnage or Long travel Lifting Equipment, by in place for building unit integral installation, the method is mainly subject to the restriction of construction height, and it is regular to require to promote channel space, collisionless and have passability, cost is higher simultaneously, and potential safety hazard is difficult to control.
Summary of the invention
For the deficiencies in the prior art, object of the present invention is intended to the construction method providing a kind of high-altitude disjunctor steel truss, and it is without the need to scaffolding erecting, and while meeting construction safety and construction intensity requirement, can improve the efficiency of construction, shorten the construction period.
For achieving the above object, the present invention adopts following technical scheme:
The construction method of high-altitude disjunctor steel truss, comprises the steps:
A, on the building body of both sides respectively pre-buried supporting member, the height of supporting member is positioned at the below of building steel truss position in advance;
Steelframe protective platform built by B, annex roofing between the building body of both sides, arranges brace summer respectively at the two ends of steelframe protective platform;
C, utilize tower crane by the lifting of steelframe protective platform to the height of supporting member, the brace summer at the two ends of steelframe protective platform is fastened on respectively on supporting member pre-buried on the building body of both sides;
D, on the steelframe protective platform fixed, lay veneer, the surrounding of steelframe protective platform sets up guard rail, makes steelframe protective platform form complete construction activities platform;
E, utilize tower crane by above the bottom main cable and girder of steel truss to construction activities platform, constructor above construction activities platform welds the steel work of bottom end of main beam with both sides building body, the outside welding Cantilever Beams of bottom girder, Cantilever Beams scaffolds erecting, forms construction passage and operating platform;
F, on the girder of bottom sectionally smooth join load-bearing Bailey bracket, the Bailey bracket end winding support of splicing, on the steel work of both sides building body, forms Bailey bracket operating platform;
G, on Bailey bracket operating platform, build other steel beam column of steel truss;
After H, steel truss integral construction complete, cutting supporting member, by the lifting of steelframe protective platform to ground.
In step H, position identical with steelframe protective platform height on the building body of both sides installs a hoist engine respectively, utilizes hoist engine to draw the end of steelframe protective platform, after cutting supporting member, utilizes hoist engine to be declined by steelframe protective platform integrally dragging.
In step B, steelframe protective platform divides left and right two parts, after two parts of steelframe protective platform have lifted by step C, two parts of steelframe protective platform is laterally drawn close and is welded and fixed.
After step e has been carried out, bottom girder end two ends, bottom and between the steel work of both sides building body, bearing diagonal beam is set.
Beneficial effect of the present invention is:
Compared to prior art, the present invention adopts the mode of directly lifting to install steelframe protective platform, thus form the security platform for equipment and workman's activity at construction location, the method of security platform is set up compared to existing scaffolding erecting, method of the present invention is simple, can improve efficiency of construction, shorten the construction period; In addition, adopt the load-bearing of Bailey bracket operating platform, can construction intensity be guaranteed.
Detailed description of the invention
Below, in conjunction with detailed description of the invention, the present invention is described further:
The construction method of high-altitude of the present invention disjunctor steel truss comprises the steps:
The pre-buried supporting member of difference on A, face relative on the building body of both sides, the height of supporting member is positioned at the below of building steel truss position in advance;
Steelframe protective platform built by B, annex roofing between the building body of both sides, arranges brace summer respectively at the two ends of steelframe protective platform; The intensity of protective platform is wanted to meet construction equipment and manually-operated requirement, and the length of protective platform equals the building distance between the building body of both sides;
C, utilize tower crane by the lifting of steelframe protective platform to the height of supporting member, the brace summer at the two ends of steelframe protective platform is fastened on respectively on supporting member pre-buried on the building body of both sides;
D, on the steelframe protective platform fixed, lay veneer, the surrounding of steelframe protective platform sets up guard rail, steelframe protective platform is made to form complete construction activities platform, this construction activities platform, for placing activity when construction equipment and workman construct, can prevent the falling object from high altitude caused when constructing from falling to ground simultaneously;
E, utilize tower crane by above the bottom main cable and girder of steel truss to construction activities platform, constructor above construction activities platform welds the steel work of bottom end of main beam with both sides building body, the outside welding Cantilever Beams of bottom girder, Cantilever Beams scaffolds erecting, forms construction passage and operating platform;
F, on the girder of bottom sectionally smooth join load-bearing Bailey bracket, the Bailey bracket end winding support of splicing, on the steel work of both sides building body, forms Bailey bracket operating platform;
G, on Bailey bracket operating platform, build other steel beam column of steel truss;
After H, steel truss integral construction complete, cutting supporting member, by the lifting of steelframe protective platform to ground.
Said method is compared to the mode of the existing construction that scaffolds erecting, and it adopts tower crane to lift steelframe protective platform, can simplify work progress, improves efficiency of construction, shortens construction period, in addition, adopts the load-bearing of Bailey bracket operating platform, can guarantee construction intensity.
For the ease of operation, in above-mentioned step H, position that can be identical with steelframe protective platform height on the building body of both sides installs a hoist engine respectively, hoist engine is utilized to draw the end of steelframe protective platform, cut supporting member afterwards, utilize hoist engine by steelframe protective platform integrally dragging, make steelframe protective platform slowly drop to ground.
In above-mentioned step B, about steelframe protective platform point, two parts have welded respectively, after two parts of steelframe protective platform have lifted by step C, two parts of steelframe protective platform are laterally drawn close and are welded and fixed, so, the negative G of tower crane can be reduced.
After step e has been carried out, bottom girder two ends, bottom and between the steel work of both sides building body, bearing diagonal beam is set, for increasing the bonding strength of bottom girder and both sides building body steel work.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the claims in the present invention.
Claims (4)
1. the construction method of high-altitude disjunctor steel truss, is characterized in that, comprises the steps:
A, on the building body of both sides respectively pre-buried supporting member, the height of supporting member is positioned at the below of building steel truss position in advance;
Steelframe protective platform built by B, annex roofing between the building body of both sides, arranges brace summer respectively at the two ends of steelframe protective platform;
C, utilize tower crane by the lifting of steelframe protective platform to the height of supporting member, the brace summer at the two ends of steelframe protective platform is fastened on respectively on supporting member pre-buried on the building body of both sides;
D, on the steelframe protective platform fixed, lay veneer, the surrounding of steelframe protective platform sets up guard rail, makes steelframe protective platform form complete construction activities platform;
E, utilize tower crane by above the bottom main cable and girder of steel truss to construction activities platform, constructor above construction activities platform welds the steel work of bottom end of main beam with both sides building body, the outside welding Cantilever Beams of bottom girder, Cantilever Beams scaffolds erecting, forms construction passage and operating platform;
F, on the girder of bottom sectionally smooth join load-bearing Bailey bracket, the Bailey bracket end winding support of splicing, on the steel work of both sides building body, forms Bailey bracket operating platform;
G, on Bailey bracket operating platform, build other steel beam column of steel truss;
After H, steel truss integral construction complete, cutting supporting member, by the lifting of steelframe protective platform to ground.
2. the construction method of high-altitude as claimed in claim 1 disjunctor steel truss, it is characterized in that, in step H, position identical with steelframe protective platform height on the building body of both sides installs a hoist engine respectively, hoist engine is utilized to draw the end of steelframe protective platform, after cutting supporting member, hoist engine is utilized to be declined by steelframe protective platform integrally dragging.
3. the construction method of high-altitude as claimed in claim 1 disjunctor steel truss, it is characterized in that, in step B, steelframe protective platform divides left and right two parts, after two parts of steelframe protective platform have lifted by step C, two parts of steelframe protective platform are laterally drawn close and have been welded and fixed.
4. the construction method of high-altitude as claimed in claim 1 disjunctor steel truss, is characterized in that, after step e has been carried out, arrange bearing diagonal beam bottom girder two ends, bottom and between the steel work of both sides building body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070549.8A CN103912128B (en) | 2014-02-28 | 2014-02-28 | The construction method of high-altitude disjunctor steel truss |
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| CN201410070549.8A CN103912128B (en) | 2014-02-28 | 2014-02-28 | The construction method of high-altitude disjunctor steel truss |
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| CN103912128A CN103912128A (en) | 2014-07-09 |
| CN103912128B true CN103912128B (en) | 2015-12-30 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104818859B (en) * | 2015-05-27 | 2017-01-04 | 中冶建工集团有限公司 | The installation method of orbit traffic overhead station operation platform |
| CN106522361A (en) * | 2016-12-07 | 2017-03-22 | 上海市机械施工集团有限公司 | Combined installation method for multi-layer heavy steel space corridor |
| CN107012949B (en) * | 2017-05-10 | 2019-06-07 | 中国建筑第二工程局有限公司 | Lifting method of large-span steel corridor |
| CN110439305A (en) * | 2019-05-24 | 2019-11-12 | 上海建工七建集团有限公司 | Steel vestibule integrally promotes high-altitude translation installation safety protection structure and its installation method |
| CN110952786B (en) * | 2019-12-25 | 2022-07-15 | 中建国厦集团股份有限公司 | Truss structure and installation method thereof |
| CN111456400A (en) * | 2020-03-24 | 2020-07-28 | 中国五冶集团有限公司 | Interim operation platform structure in high altitude |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04146343A (en) * | 1990-10-09 | 1992-05-20 | Shimizu Corp | Column/beam jointing construction |
| CN100557168C (en) * | 2008-03-21 | 2009-11-04 | 宁波建工集团有限公司 | A kind of method for high altitude installation of large span steel truss |
| CN101845849B (en) * | 2010-06-22 | 2011-08-24 | 中国建筑第二工程局有限公司 | Large-span steel structure corridor erected between new and old buildings and construction method thereof |
| CN101845848B (en) * | 2010-06-22 | 2011-08-24 | 中国建筑第二工程局有限公司 | Large-span steel connecting bridge and integral hoisting method thereof |
| CN103061514B (en) * | 2012-11-09 | 2015-12-02 | 浙江八达建设集团有限公司 | Long-span steel structure corridor construction method |
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