CN104631837A - Method for installing and constructing special-shaped large-tonnage steel castings - Google Patents
Method for installing and constructing special-shaped large-tonnage steel castings Download PDFInfo
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- CN104631837A CN104631837A CN201410815126.4A CN201410815126A CN104631837A CN 104631837 A CN104631837 A CN 104631837A CN 201410815126 A CN201410815126 A CN 201410815126A CN 104631837 A CN104631837 A CN 104631837A
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Abstract
The invention discloses a method for installing and constructing special-shaped large-tonnage steel castings. The large-tonnage steel castings are complex in shape and are hoisted through a heavy crawler crane. Before the steel castings are hoisted, a symmetric method is adopted to analyze and determine the installing positions of lifting lugs of the steel castings, and a welding work platform is arranged on the welding portions of the steel castings in advance. In the installing and constructing process, a sling of the crawler crane is used for controlling the vertical displacement of the steel castings, a wind cable is used for adjusting the horizontal displacement of the steel castings, and the installation accuracy and construction safety of the steel castings are guaranteed by means of temporary support and other measures; after the steel castings are installed in place, the quality of weld joints is guaranteed through a series of processes such as weld preheating, in-process heat preservation and postweld heat treatment according to the material characteristics of the steel castings and up-down welding structures. By means of the method, the standard requirements for joints of the special-shaped large-tonnage steel castings are met, the construction quality is ensured, connection is more reasonable and effective, the consumption of steel is reduced, and meanwhile the appearance quality of a building is improved.
Description
Technical field
The present invention relates to E04B building construction or other safeguard devices, especially special-shaped large-tonnage steel-casting construction method of installation.
Background technology
Abnormity large-tonnage steel-casting cast steel makes.Similar to cast iron, but better than cast iron intensity.In casting process, easily there is the shortcomings such as bubble, angle orientation are inaccurate, in Long-Time Service, just likely occur the phenomenon that casing ruptures.Therefore, more need correctly to apply engineering method in installation process.Steel reinforced concrete structure relies on the excellent application of performance in highrise building and longspan structure increasingly extensive, and the application in Complicated Spatial Structure also gets more and more.In steel reinforced concrete structure, multidirectional oblique component crossed node often adopts special-shaped cast steel node, and steel-casting is generally placed in outside concrete, and built-in type node is less.But the requirement of facade and globality is improved constantly, the rough profile of traditional steel-casting node obviously directly affects the impression quality of building, and under the main trend advocating energy-conserving and environment-protective, traditional steel-casting that steel quantity consumption is large obviously runs in the opposite direction with it.
Along with the raising of the designing technique of China's steel-casting and the perfect gradually of processing technology, steel-casting is widely used in construction steel structure in recent years, in the middle of the construction steel structure that it is mainly used in build complexity, stressed huge, node power transmission is concentrated, this kind of form of structure has that supporting capacity is high, rigidity is large and the advantage such as anti-seismic performance is good, and by factorial praluction, can greatly enhance productivity.For profile and internal construction all very complicated, and the structure that bearing capacity is huge, make of the high-tensile structural steel of forging molding and be difficult to realize, and it is uneconomical applicable, as shaping in steel-casting foundry's mould direct pouring in adopted steel-casting, then can produce in batches, improve efficiency of construction, shorten construction period.
China's application 201120246542.9 discloses a kind of large cast steel node, and this cast steel node is the rectangular cylinder that axle center is provided with elliptical aperture, and the both ends of the surface of cylinder are provided with protruding square frame, and four sides of cylinder are respectively equipped with at least one boss or linking arm.What this steel-casting alleviated the superposition of node residual stress and steel-casting body to a certain extent tears phenomenon, but because this cast steel node is only provided with circular hole in axle center, the crossed node place of multidirectional oblique component cannot be used in, use position is single, and this cast steel node belongs to heavy wall steel-casting, institute takes up space comparatively large, all makes this steel-casting lack flexibility in engineering uses.
Chinese patent application 201420241471.7 discloses special-shaped cast steel built-in type node in a kind of steel reinforced concrete structure, comprise top cast steel supporter, middle part supervisor and lower hemisphere connected node, described top cast steel supporter connects upper support structure, described middle part supervisor is provided with ring beam bracket, cant beam bracket and batter post bracket, beam column is connected with steel-casting by bracket, and bottom described lower hemisphere connected node and side has ventilation circular hole.
Summary of the invention
The object of this invention is to provide a kind of special-shaped large-tonnage steel-casting construction method of installation, solve prior art problem, make it in special-shaped large-tonnage steel-casting structure, the connection at especially multidirectional oblique component crossed node place more rationally effectively, and decrease the consumption of steel, improve the impression quality of building simultaneously.
Object of the present invention will be realized by following technical measures: the complex-shaped use heavy crawler of large-tonnage steel-casting lifts up into row lifting, balanced method analysis is adopted to determine steel-casting hanger installation site before lifting, and arrange good welding job platform in advance in steel-casting welding position, the displacement of steel-casting vertical direction is controlled by crawler crane hoist cable in installation process, regulate horizontal direction displacement by cable wind rope, and adopt the measures such as temporary support to ensure the precision that steel-casting is installed and construction safety; After steel-casting installation in position, according to steel-casting and upper and lower welded material feature, ensured the quality of weld seam by series of process such as insulation, postweld head treatment in weld preheating, process.
Especially, in work progress, in making temporary support with while installing temporary support, synchronously carry out the examination of materials, installation hanger, hanger welding and hanger flaw detection; Further, progressively carry out linking up with, erection construction handling frame, lifting, measurement update, cast steel welding, flaw detection and support unloading, complete work progress.
Especially, concrete step comprises:
1. the inspection of raw and process materials; The inspection of internal construction, the inspection of wall thickness and carry out the nondestructive inspection of omnibearing external surface magnetic, to guarantee that steel-casting can not use after existing defects;
2. lift otic placode to install and welding; Must calculate according to the distribution of weight of component deepen drawing to component before hanger is installed, then be evenly distributed otic placode position according to distribution of weight situation, then carry out the assembling and the welding that lift otic placode;
3. the fabrication and installation of temporary support; Welded weld seam detection qualified after, can unload temporary support top of the trellis and adopt Formwork Support for External, truss winds up employing H profile steel; Carrying basis to be carried out before support installing, adopt free-standing concrete foundation; Temporary support is high according to the top mark of Pass line adjustment support at the bottom of the design of hung steel-casting when installing;
4. link up with; Lifting is with four wire rope, and ensure enough safety factor, rope capacity is respectively each two of 3m, each two of 5m; Article two, 3m wire rope mounts 30T Chain block separately, in order to adjust the balance of steel-casting;
5. handling frame is set up; Handling frame scaffolding steel pipe is set up, and setting up platform must have guardrail, has safety belt hanging point, can use after safety verification is qualified;
6. lift, correct; Cast steel is cleared up corresponding steel column and rack platform before installing, and on jig frame platform face, identify " ten " word axis; Find out cross centre line to go forward side by side row labels in each steel-casting side;
Everything in readiness, after all-position safety passed examination, can hook up lifting; Calculate the safty hoisting distance of crane before lifting, and determine best Hoisting Position and crane of having stood in advance by empty hook test; The omnidistance maintenance of lifting is at the uniform velocity lifted by crane gently; When above cast steel hangs bracing frame during 200mm, shut down stable, slowly fall after aiming at cross hairs; Check the alignment case of steel-casting four limit center line and basic cross axis, require steel-casting center line and the longitudinal and transverse dead in line of base surface; The deviation in place of preliminary adjustment steel-casting base plate within 3mm after make it practicable, recycling jack carries out accurate adjustment, is coordinated the level of the upper plane regulating cast steel by Chain block simultaneously; After correction completes, fixed the absolute altitude of cast steel bottom surface by the steel plate washer that 1mm is thick, then with code plate, steel-casting is fixedly welded, guarantee the interim stabilization of structure and in welding process, play certain control welding deformation effect;
7. steel-casting welding procedure.
Especially, steel-casting qualification of welding procedure method comprises: determine optimum welding process parameter according to the various types of welding node of steel-casting, formulate complete, reasonable, detailed technological measure and technological process; Welding sequence: Y steel column docks with steel-casting and welds, Y steel column and steel-casting welding sequence are welded for inner layer steel plate of first constructing, then outer layer plate of constructing welds, inner layer steel plate welding is by 2 welders welding clockwise simultaneously, article two, weld seam is carrying out the long weld seam welding of internal layer after having welded, the method that the long weld seam of internal layer takes segmentation to weld is carried out, in advance welding middle position weld seam, carries out skin welding after having welded internal layer steel column again; Welding method: cast steel just starts welding after bit correction, use CO
2semi-automatic gas shielded arc welding.
Advantage of the present invention and effect: meet special-shaped large-tonnage steel-casting Nodes standard-required, guarantee construction quality, connect more rationally effectively, and decrease the consumption of steel, improve the impression quality of building simultaneously.
Accompanying drawing explanation
Fig. 1 is the construction sequence schematic diagram in the present invention.
Detailed description of the invention
The principle of the invention is, the complex-shaped use heavy crawler of large-tonnage steel-casting lifts up into row lifting, balanced method analysis is adopted to determine steel-casting hanger installation site before lifting, and arrange good welding job platform in advance in steel-casting welding position, the displacement of steel-casting vertical direction is controlled by crawler crane hoist cable in installation process, regulate horizontal direction displacement by cable wind rope, and adopt the measures such as temporary support to ensure the precision that steel-casting is installed and construction safety; After steel-casting installation in position, according to steel-casting and upper and lower welded material feature, ensured the quality of weld seam by series of process such as insulation, postweld head treatment in weld preheating, process.
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment 1: as shown in Figure 1, in work progress, in making temporary support with while installing temporary support, synchronously carries out the examination of materials, installation hanger, hanger welding and hanger flaw detection; Further, progressively carry out linking up with, erection construction handling frame, lifting, measurement update, cast steel welding, flaw detection and support unloading, complete work progress.
Concrete step comprises:
1. the inspection of raw and process materials; It is qualified through factory's quality inspection when steel-casting dispatches from the factory, provide the outgoing quality certification, the on-the-spot inspection must carrying out appearance and size after marching into the arena, the inspection of internal construction, the inspection of wall thickness and carry out omnibearing external surface magnetic nondestructive inspection etc., to guarantee that steel-casting can not use after existing defects;
2. lift otic placode to install and welding; Unassembled lifting otic placode before steel-casting appears on the scene, need install at building-site before lifting; Because steel-casting tonnage is large, and out-of-shape, distribution of weight is asymmetric.Must calculate according to the distribution of weight of component deepen drawing to component before hanger is installed, then be evenly distributed otic placode position according to distribution of weight situation, then carry out the assembling and the welding that lift otic placode;
3. the fabrication and installation of temporary support; Temporary support plays a very important role in whole cast steel installation process, in structure hoisting and the stage of welding, nearly all weight all will have temporary support to bear, welded weld seam detection qualified after, can unload temporary support top of the trellis and adopt Formwork Support for External, truss winds up employing H profile steel; Carrying basis to be carried out before support installing, adopt free-standing concrete foundation; Temporary support is high according to the top mark of Pass line adjustment support at the bottom of the design of hung steel-casting when installing;
4. link up with; Lifting is with four wire rope, and ensure enough safety factor, rope capacity is respectively each two of 3m, each two of 5m; Article two, 3m wire rope mounts 30T Chain block separately, in order to adjust the balance of steel-casting;
5. handling frame is set up; What dock with cast steel due to Y shape pillar top is batter post, batter post is difficult to fitting operation platform, therefore steel-casting lifting before will on foundry goods erection construction handling frame, be used as to install and the operating platform welded, handling frame scaffolding steel pipe is set up, set up platform and must have guardrail, have safety belt hanging point, can use after safety verification is qualified;
6. lift, correct; Cast steel is cleared up corresponding steel column and rack platform before installing, and on jig frame platform face, identify " ten " word axis; Find out cross centre line to go forward side by side row labels in each steel-casting side;
Everything in readiness, after all-position safety passed examination, can hook up lifting; Calculate the safty hoisting distance of crane before lifting, and determine best Hoisting Position and crane of having stood in advance by empty hook test; Lift by specialty and the lifting commander possessing rich experiences takes appointment with certificate, omnidistance maintenance, at the uniform velocity lifts by crane gently; When above cast steel hangs bracing frame during 200mm, shut down stable, slowly fall after aiming at cross hairs; Check the alignment case of steel-casting four limit center line and basic cross axis, require steel-casting center line and the longitudinal and transverse dead in line of base surface.The deviation in place of preliminary adjustment steel-casting base plate within 3mm after make it practicable, recycling jack carries out accurate adjustment, is coordinated the level of the upper plane regulating cast steel by Chain block simultaneously; After correction completes, fixed the absolute altitude of cast steel bottom surface by the steel plate washer that 1mm is thick, then with code plate, steel-casting is fixedly welded, guarantee the interim stabilization of structure and in welding process, play certain control welding deformation effect;
7. steel-casting welding procedure.
In aforementioned, steel-casting qualification of welding procedure method comprises: determine optimum welding process parameter according to the various types of welding node of steel-casting, formulate complete, reasonable, detailed technological measure and technological process; Welding sequence: Y steel column docks with steel-casting and welds, Y steel column and steel-casting welding sequence are welded for inner layer steel plate of first constructing, then outer layer plate of constructing welds, inner layer steel plate welding is by 2 welders welding clockwise simultaneously, article two, weld seam is carrying out the long weld seam welding of internal layer after having welded, the method that the long weld seam of internal layer takes segmentation to weld is carried out, in advance welding middle position weld seam, carries out skin welding after having welded internal layer steel column again; Welding method: cast steel just starts welding after bit correction, use CO
2semi-automatic gas shielded arc welding.
Claims (4)
1. special-shaped large-tonnage steel-casting construction method of installation, it is characterized in that, the complex-shaped use heavy crawler of large-tonnage steel-casting lifts up into row lifting, balanced method analysis is adopted to determine steel-casting hanger installation site before lifting, and arrange good welding job platform in advance in steel-casting welding position, the displacement of steel-casting vertical direction is controlled by crawler crane hoist cable in installation process, regulate horizontal direction displacement by cable wind rope, and adopt the measures such as temporary support to ensure the precision that steel-casting is installed and construction safety; After steel-casting installation in position, according to steel-casting and upper and lower welded material feature, ensured the quality of weld seam by series of process such as insulation, postweld head treatment in weld preheating, process.
2. special-shaped large-tonnage steel-casting construction method of installation as claimed in claim 1, is characterized in that, in work progress, in making temporary support with while installing temporary support, synchronously carries out the examination of materials, installation hanger, hanger welding and hanger flaw detection; Further, progressively carry out linking up with, erection construction handling frame, lifting, measurement update, cast steel welding, flaw detection and support unloading, complete work progress.
3. special-shaped large-tonnage steel-casting construction method of installation as claimed in claim 1, it is characterized in that, concrete step comprises: the 1. inspection of raw and process materials; The inspection of internal construction, the inspection of wall thickness and carry out the nondestructive inspection of omnibearing external surface magnetic, to guarantee that steel-casting can not use after existing defects;
2. lift otic placode to install and welding; Must calculate according to the distribution of weight of component deepen drawing to component before hanger is installed, then be evenly distributed otic placode position according to distribution of weight situation, then carry out the assembling and the welding that lift otic placode;
3. the fabrication and installation of temporary support; Welded weld seam detection qualified after, can unload temporary support top of the trellis and adopt Formwork Support for External, truss winds up employing H profile steel; Carrying basis to be carried out before support installing, adopt free-standing concrete foundation; Temporary support is high according to the top mark of Pass line adjustment support at the bottom of the design of hung steel-casting when installing;
4. link up with; Lifting is with four wire rope, and ensure enough safety factor, rope capacity is respectively each two of 3m, each two of 5m; Article two, 3m wire rope mounts 30T Chain block separately, in order to adjust the balance of steel-casting;
5. handling frame is set up; Handling frame scaffolding steel pipe is set up, and setting up platform must have guardrail, has safety belt hanging point, can use after safety verification is qualified;
6. lift, correct; Cast steel is cleared up corresponding steel column and rack platform before installing, and on jig frame platform face, identify " ten " word axis; Find out cross centre line to go forward side by side row labels in each steel-casting side;
Everything in readiness, after all-position safety passed examination, can hook up lifting; Calculate the safty hoisting distance of crane before lifting, and determine best Hoisting Position and crane of having stood in advance by empty hook test; The omnidistance maintenance of lifting is at the uniform velocity lifted by crane gently; When above cast steel hangs bracing frame during 200mm, shut down stable, slowly fall after aiming at cross hairs; Check the alignment case of steel-casting four limit center line and basic cross axis, require steel-casting center line and the longitudinal and transverse dead in line of base surface; The deviation in place of preliminary adjustment steel-casting base plate within 3mm after make it practicable, recycling jack carries out accurate adjustment, is coordinated the level of the upper plane regulating cast steel by Chain block simultaneously; After correction completes, fixed the absolute altitude of cast steel bottom surface by the steel plate washer that 1mm is thick, then with code plate, steel-casting is fixedly welded, guarantee the interim stabilization of structure and in welding process, play certain control welding deformation effect;
7. steel-casting welding procedure.
4. special-shaped large-tonnage steel-casting construction method of installation as claimed in claim 1, it is characterized in that, steel-casting qualification of welding procedure method comprises: determine optimum welding process parameter according to the various types of welding node of steel-casting, formulate complete, reasonable, detailed technological measure and technological process; Welding sequence: Y steel column docks with steel-casting and welds, Y steel column and steel-casting welding sequence are welded for inner layer steel plate of first constructing, then outer layer plate of constructing welds, inner layer steel plate welding is by 2 welders welding clockwise simultaneously, article two, weld seam is carrying out the long weld seam welding of internal layer after having welded, the method that the long weld seam of internal layer takes segmentation to weld is carried out, in advance welding middle position weld seam, carries out skin welding after having welded internal layer steel column again; Welding method: cast steel just starts welding after bit correction, use CO
2semi-automatic gas shielded arc welding.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104878139A (en) * | 2015-05-28 | 2015-09-02 | 中国十七冶集团有限公司 | One-step integral hoisting method for Y-shaped three-way-type downcomer of blast furnace |
| CN105971839A (en) * | 2016-06-07 | 2016-09-28 | 中国十七冶集团有限公司 | Split combination mounting method of vacuum pump |
| CN106271175A (en) * | 2016-09-28 | 2017-01-04 | 上海海事大学 | A kind of design and calculation method of Ship Welding hanger |
| 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 |
| CN107803630A (en) * | 2017-10-30 | 2018-03-16 | 上海振华重工启东海洋工程股份有限公司 | A kind of cutter suction dredger trunnion base steel-casting welding procedure |
| CN108153972A (en) * | 2017-12-22 | 2018-06-12 | 腾达建设集团股份有限公司 | A kind of cable hoisting full-range analysis methods |
| CN109113346A (en) * | 2018-09-19 | 2019-01-01 | 上海市机械施工集团有限公司 | A kind of plastic stone rockery abnormal complex steel supporting structure construction method |
| CN110695617A (en) * | 2018-07-10 | 2020-01-17 | 北京京盛泰华金属结构有限公司 | Machining process of section steel column |
| CN112878698A (en) * | 2019-11-29 | 2021-06-01 | 中冶(上海)钢结构科技有限公司 | Construction method for separately installing pipe truss and steel casting and sliding for aligning |
| CN113602969A (en) * | 2021-07-15 | 2021-11-05 | 中国葛洲坝集团三峡建设工程有限公司 | Large-sized runner steel lining multi-pipe-joint continuous hoisting method |
| CN115419277A (en) * | 2022-09-13 | 2022-12-02 | 新疆兵团工业设备安装有限责任公司 | Construction method of heavy steel box type inclined column |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04336167A (en) * | 1991-05-10 | 1992-11-24 | Mitsubishi Heavy Ind Ltd | Construction of building and elevation device to be used for same construction |
| CN1978838A (en) * | 2005-12-06 | 2007-06-13 | 杨中源 | Construction method for combined V-shape steel pipe concrete pile |
| CN102505860A (en) * | 2011-10-21 | 2012-06-20 | 温州建设集团有限公司 | Novel Lifting method for irregularly-shaped steel structure member |
| CN103437563A (en) * | 2013-09-04 | 2013-12-11 | 中国十九冶集团有限公司 | Installation method for steel skeleton of large steel structure factory building |
-
2014
- 2014-12-08 CN CN201410815126.4A patent/CN104631837A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04336167A (en) * | 1991-05-10 | 1992-11-24 | Mitsubishi Heavy Ind Ltd | Construction of building and elevation device to be used for same construction |
| CN1978838A (en) * | 2005-12-06 | 2007-06-13 | 杨中源 | Construction method for combined V-shape steel pipe concrete pile |
| CN102505860A (en) * | 2011-10-21 | 2012-06-20 | 温州建设集团有限公司 | Novel Lifting method for irregularly-shaped steel structure member |
| CN103437563A (en) * | 2013-09-04 | 2013-12-11 | 中国十九冶集团有限公司 | Installation method for steel skeleton of large steel structure factory building |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878139A (en) * | 2015-05-28 | 2015-09-02 | 中国十七冶集团有限公司 | One-step integral hoisting method for Y-shaped three-way-type downcomer of blast furnace |
| CN105971839A (en) * | 2016-06-07 | 2016-09-28 | 中国十七冶集团有限公司 | Split combination mounting method of vacuum pump |
| CN106271175A (en) * | 2016-09-28 | 2017-01-04 | 上海海事大学 | A kind of design and calculation method of Ship Welding hanger |
| 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 |
| CN107803630A (en) * | 2017-10-30 | 2018-03-16 | 上海振华重工启东海洋工程股份有限公司 | A kind of cutter suction dredger trunnion base steel-casting welding procedure |
| CN108153972B (en) * | 2017-12-22 | 2021-05-28 | 腾达建设集团股份有限公司 | Analysis method for whole process of cable hoisting |
| CN108153972A (en) * | 2017-12-22 | 2018-06-12 | 腾达建设集团股份有限公司 | A kind of cable hoisting full-range analysis methods |
| CN110695617A (en) * | 2018-07-10 | 2020-01-17 | 北京京盛泰华金属结构有限公司 | Machining process of section steel column |
| CN110695617B (en) * | 2018-07-10 | 2021-05-14 | 北京京盛泰华金属结构有限公司 | Machining process of section steel column |
| CN109113346A (en) * | 2018-09-19 | 2019-01-01 | 上海市机械施工集团有限公司 | A kind of plastic stone rockery abnormal complex steel supporting structure construction method |
| CN112878698A (en) * | 2019-11-29 | 2021-06-01 | 中冶(上海)钢结构科技有限公司 | Construction method for separately installing pipe truss and steel casting and sliding for aligning |
| CN113602969A (en) * | 2021-07-15 | 2021-11-05 | 中国葛洲坝集团三峡建设工程有限公司 | Large-sized runner steel lining multi-pipe-joint continuous hoisting method |
| CN113602969B (en) * | 2021-07-15 | 2024-03-12 | 中国葛洲坝集团三峡建设工程有限公司 | Continuous hoisting method for large runner steel lining multi-pipe joint |
| CN115419277A (en) * | 2022-09-13 | 2022-12-02 | 新疆兵团工业设备安装有限责任公司 | Construction method of heavy steel box type inclined column |
| CN115419277B (en) * | 2022-09-13 | 2024-01-26 | 新疆兵团工业设备安装有限责任公司 | Construction method of heavy steel box type diagonal column |
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Application publication date: 20150520 |