CN104328922B - High-altitude multilayer is dangled steel construction against way Hoisting Construction Technology - Google Patents
High-altitude multilayer is dangled steel construction against way Hoisting Construction Technology Download PDFInfo
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Abstract
本发明涉及建筑物连廊施工技术,具体为一种高空多层悬垂钢结构逆做法吊装施工技术。一种高空多层悬垂钢结构逆做法吊装施工技术,包括以下步骤:第一步:在左侧楼体的第n+1层内侧吊装第一榀桁架;第二步:在右侧楼体的第n+1层内侧吊装第二榀桁架;第三步:在已经安装好的一对桁架之间吊装主横梁;第四步:在主横梁上悬吊安装n至m层第一片钢柱框架;第五步:在第n+1层的一对桁架间吊装第一次横梁;第六步:在第n层的跨间纵梁之间吊装第二次横梁;之后在第n-1层的跨间纵梁之间吊装第三次横梁……直到完成第m层的跨间纵梁之间次横梁的吊装;第七步:吊装桁架上弦斜撑及纵梁;第八步:吊装n+1至m层右侧挑梁。
The invention relates to the construction technology of building corridors, in particular to a construction technology for the reverse hoisting of high-altitude multi-layer suspended steel structures. A construction technique for hoisting a high-altitude multi-storey suspended steel structure by reverse method, comprising the following steps: the first step: hoisting the first truss on the inside of the n+1th floor of the left building; The second truss is hoisted on the inside of the n+1 floor; the third step: hoist the main beam between the installed pair of trusses; the fourth step: hang and install the first steel column on the n to m floors on the main beam Frame; the fifth step: hoist the first crossbeam between a pair of trusses on the n+1 floor; the sixth step: hoist the second crossbeam between the inter-span longitudinal beams on the nth floor; then the n-1 Hoist the third beam between the longitudinal beams between the spans of the floor...until the hoisting of the secondary beams between the longitudinal beams of the mth floor is completed; the seventh step: hoisting the upper chord braces and longitudinal beams of the truss; the eighth step: hoisting From n+1 to m floors, the right side picks up the beam.
Description
技术领域 technical field
本发明涉及建筑物连廊施工技术,具体为一种高空多层悬垂钢结构逆做法吊装施工技术。 The invention relates to the construction technology of building corridors, in particular to a construction technology for the reverse hoisting of high-altitude multi-layer suspended steel structures.
背景技术 Background technique
目前许多建筑物都具有连廊结构,连廊一般指两座或几座高层建筑之间由架空连接体相互连接的结构,连廊可作为两座建筑物之间的连接通道,也可以用作观光休闲用途。通常采用的连廊建设方法是先建起两座钢筋混凝土结构(即两座楼体),然后在两座钢筋混凝土结构之间由下而上搭建脚手架,并将相应的纵梁、横梁等结构件由下而上安装到位,最后再拆除脚手架。该种方法技术上较为成熟但是存在脚手架搭建费时费力、特别是占地面积较大的技术问题,影响了施工周期,占用了施工场地(特别是在施工场地很狭小的时候),导致施工环境恶劣,严重影响了建设效率。 At present, many buildings have a corridor structure. A corridor generally refers to a structure in which two or several high-rise buildings are connected to each other by an overhead connector. The corridor can be used as a connecting passage between two buildings, or as a Sightseeing and leisure purposes. The commonly used corridor construction method is to build two reinforced concrete structures (that is, two buildings), and then build scaffolding between the two reinforced concrete structures from bottom to top, and place the corresponding longitudinal beams, beams and other structures The parts are installed in place from bottom to top, and finally the scaffolding is removed. This method is technically mature, but there are technical problems such as time-consuming and labor-intensive scaffolding, especially the large footprint, which affects the construction period and occupies the construction site (especially when the construction site is very small), resulting in a poor construction environment. , seriously affecting the construction efficiency.
发明内容 Contents of the invention
本发明为解决目前连廊施工过程中脚手架搭建占地面积大、施工效率低的技术问题,提供一种高空多层悬垂钢结构逆做法吊装施工技术。 In order to solve the technical problems of large area occupied by scaffolding and low construction efficiency in the current corridor construction process, the present invention provides a reverse method hoisting construction technology for high-altitude multi-layer suspended steel structures.
本发明是采用以下技术方案实现的:一种高空多层悬垂钢结构逆做法吊装施工技术,在已经建好的左右两座钢筋混凝土结构的楼体之间安装连廊,连廊最高一层对应楼体的第n层,连廊最低一层对应楼体的第m层,其中m<n;包括以下步骤: The present invention is realized by adopting the following technical solutions: a high-altitude multi-storey hanging steel structure reverse method hoisting construction technology, a corridor is installed between the two built left and right reinforced concrete buildings, and the highest floor of the corridor corresponds to On the nth floor of the building, the lowest floor of the corridor corresponds to the mth floor of the building, where m<n; including the following steps:
第一步:在左侧楼体的第n+1层内侧吊装第一榀桁架; Step 1: hoist the first truss on the inside of the n+1th floor of the left building;
第二步:在右侧楼体的第n+1层内侧吊装第二榀桁架; Step 2: hoist the second truss on the inside of the n+1th floor of the right building;
第三步:在已经安装好的一对桁架之间吊装主横梁; Step 3: hoist the main beam between the installed pair of trusses;
第四步:在主横梁上悬吊安装n至m层第一片钢柱框架;然后在第一片钢柱框架上吊装n至m层第一跨边纵梁;之后在主横梁上悬吊安装位于第一片钢柱框架之后的第二片钢柱框架,在第一片钢柱框架与第二片钢柱框架之间吊装第一跨间纵梁;然后在主横梁上悬吊安装位于第二片钢柱框架之后的第三片钢柱框架,在第二片钢柱框架和第三片钢柱框架之间吊装第二跨间纵梁……以此类推,直到吊装完最后一片钢柱框架和最后的跨间纵梁,并在最后一片钢柱框架上吊装n至m层第二跨边纵梁;所有钢柱框架的两侧均与左右两侧的楼体内侧连接;所有跨间纵梁和跨边纵梁均与相邻的楼体连接; Step 4: Suspend and install the first piece of steel column frame from n to m storey on the main beam; then hoist the first span longitudinal beam from n to m storey on the first steel column frame; then hang on the main beam Install the second steel column frame behind the first steel column frame, hoist the first inter-span longitudinal beam between the first steel column frame and the second steel column frame; then hang and install on the main beam For the third steel column frame after the second steel column frame, the second span longitudinal beam is hoisted between the second steel column frame and the third steel column frame...and so on until the last steel column frame is hoisted column frame and the last inter-span longitudinal beam, and the second span side longitudinal beam from n to m floors is hoisted on the last steel column frame; both sides of all steel column frames are connected with the inner sides of the building body on the left and right sides; all spans Both the longitudinal girders and the side girders are connected with the adjacent buildings;
第五步:在第n+1层的一对桁架间吊装第一次横梁; Step 5: Hoist the first beam between a pair of trusses on the n+1 floor;
第六步:在第n层的跨间纵梁之间吊装第二次横梁;之后在第n-1层的跨间纵梁之间吊装第二次横梁……直到完成第m层的跨间纵梁之间次横梁的吊装; Step 6: hoist the second crossbeam between the span girders on the nth floor; then hoist the second crossbeam between the span girders on the n-1 floor...until the mth floor span is completed Hoisting of secondary beams between longitudinal beams;
第七步:吊装桁架上弦斜撑及纵梁; Step 7: Hoist the upper chord braces and longitudinal beams of the truss;
第八步:吊装n+1至m层右侧挑梁。 Step 8: Hoist the right cantilever on floors n+1 to m.
本发明所述的连廊钢结构“逆作法”施工是依照先上部后下部,先就位点焊、螺栓固定后焊接定位的施工方法进行。钢桁架采用场外制作构件,现场预拼装,然后使用吊装拔杆与滑轮组起吊的方式进行安装;所有钢柱、钢梁等构件均在专业工厂制作、预拼装,用平板汽车运输运至现场后,汽车吊跟随装卸构件至拼装平台。吊装就位采用高强螺栓连接安装,部分手工电弧焊接。 The construction of the corridor steel structure "inverse method" according to the present invention is carried out according to the construction method of first the upper part and then the lower part, spot welding in place first, and then welding and positioning after bolt fixing. Steel trusses are made of off-site components, pre-assembled on site, and then installed by hoisting rods and pulley blocks; all steel columns, steel beams and other components are manufactured in professional factories, pre-assembled, and transported to the site by flatbed trucks , the car crane follows the loading and unloading components to the assembly platform. The hoisting in place is connected and installed with high-strength bolts, and some are manual arc welding.
本发明的有益效果:1、本工程的重难点在于钢桁架的现场拼装及吊装就位,通过综合研究分析并结合施工经验,现场钢结构施工利用已施工完毕并达到标号的混凝土楼板,做为连廊钢构件的拼装平台,然后采用免搭脚手架的“逆作法吊装”施工方法,先吊装上部钢桁架,再按照“自上而下”的顺序逐层吊装安装下部框架柱、梁及其它结构。利用卷扬机、绞磨等动力设备,2部拔杆起吊的施工方案来完成安装。 Beneficial effects of the present invention: 1. The major and difficult points of this project are the on-site assembly and hoisting of steel trusses. Through comprehensive research and analysis combined with construction experience, the on-site steel structure construction utilizes the concrete floor slabs that have been constructed and have reached the mark. The assembly platform of the steel components of the corridor, and then adopt the "reverse hoisting method" construction method without scaffolding. First, the upper steel truss is hoisted, and then the lower frame columns, beams, and other structures are hoisted and installed layer by layer in a "top-down" order . Use hoist, winch and other power equipment to complete the installation with the construction plan of two pulling rods for lifting.
2、本发明施工方案中,钢桁架、钢柱框架等构件均在地面拼装,采用单元式起吊安装的方式施工,最大程度的减少了高空作业量,满足施工图纸对工程质量的要求,降低安全防护费用与精力。 2. In the construction plan of the present invention, steel trusses, steel column frames and other components are assembled on the ground, and the construction is carried out by means of unitary lifting and installation, which reduces the amount of high-altitude operations to the greatest extent, meets the requirements of construction drawings for project quality, and reduces safety. Protection cost and energy.
3、在做好安全防护的前提下,能够保证土建与钢结构、钢结构之间施工的流水作业,节约工作面,缩短工程整体工期。 3. Under the premise of good safety protection, it can ensure the flow operation between civil works, steel structure and steel structure, save the working surface and shorten the overall construction period of the project.
4、在工程造价方面,由于避免了满堂脚手架的搭设,故在施工周期、劳动力投入、脚手架材料、密目安全网的立面、平面防护、垂直运输及防止高处坠落等方面,都会有很大程度的降低。 4. In terms of project cost, due to avoiding the erection of scaffolding, there will be great advantages in terms of construction period, labor input, scaffolding materials, facade of dense mesh safety net, plane protection, vertical transportation and prevention of falling from heights, etc. greatly reduced.
5、钢结构主要受力杆件和节点在安装工程中的各个阶段均受力作用明确,符合悬垂钢结构的内力特点和设计要求。 5. The main stress-bearing members and nodes of the steel structure have clear force action at each stage of the installation project, which conforms to the internal force characteristics and design requirements of the hanging steel structure.
6、无卸载工序,施工作业流程简化;同时施工结束后连廊受力状况不发生变化,克服了传统施工方法拆除脚手架等支撑体系后连廊受力发生变化导致整个结构可能发生变形的技术问题,保证了工程质量。 6. There is no unloading process, and the construction operation process is simplified; at the same time, the force condition of the corridor does not change after the construction is completed, which overcomes the technical problem that the force of the corridor changes after the support system such as scaffolding is removed by the traditional construction method, which may cause the entire structure to deform. , to ensure the quality of the project.
7、施工更加安全可靠。 7. The construction is safer and more reliable.
附图说明 Description of drawings
图1为初始状态结构示意图。 Figure 1 is a schematic diagram of the initial state structure.
图2为11层左侧第一榀桁架安装示意图。 Figure 2 is a schematic diagram of the installation of the first truss on the left side of the 11th floor.
图3为11层右侧第二榀桁架安装示意图。 Figure 3 is a schematic diagram of the installation of the second truss on the right side of the 11th floor.
图4为11层桁架间主横梁安装示意图。 Figure 4 is a schematic diagram of the installation of the main beam between the trusses on the 11th floor.
图5为10、9、8层第一片钢柱框架安装示意图。 Figure 5 is a schematic diagram of the installation of the first steel column frame on the 10th, 9th, and 8th floors.
图6为10、9、8层第一跨边纵梁安装示意图。 Figure 6 is a schematic diagram of the installation of the first side span longitudinal beams on the 10th, 9th and 8th floors.
图7为10、9、8层第二片钢柱框架安装示意图。 Figure 7 is a schematic diagram of the installation of the second steel column frame on the 10th, 9th, and 8th floors.
图8为10、9、8层第一跨间纵梁安装示意图。 Figure 8 is a schematic diagram of the installation of the longitudinal beams between the first spans on the 10th, 9th, and 8th floors.
图9为10、9、8层第三片钢柱框架安装示意图。 Figure 9 is a schematic diagram of the installation of the third steel column frame on the 10th, 9th, and 8th floors.
图10为10、9、8层第二跨间纵梁安装示意图。 Figure 10 is a schematic diagram of the installation of the longitudinal beams between the second spans on the 10th, 9th, and 8th floors.
图11为10、9、8层第四片钢柱框架安装示意图。 Figure 11 is a schematic diagram of the installation of the fourth steel column frame on the 10th, 9th, and 8th floors.
图12为10、9、8层第三跨间纵梁安装示意图。 Figure 12 is a schematic diagram of the installation of the longitudinal beams between the third spans on the 10th, 9th, and 8th floors.
图13为10、9、8层第二跨边纵梁安装示意图。 Figure 13 is a schematic diagram of the installation of the second side span longitudinal beams on the 10th, 9th and 8th floors.
图14为11层桁架间次横梁(第一次横梁)安装示意图。 Figure 14 is a schematic diagram of the installation of the secondary beam (primary beam) between the trusses on the 11th floor.
图15为10层次横梁(第二次横梁)安装示意图。 Figure 15 is a schematic diagram of the installation of the 10-level beam (the second beam).
图16为9层次横梁(第三次横梁)安装示意图。 Figure 16 is a schematic diagram of the installation of the 9-level beam (the third beam).
图17为8层次横梁(第四次横梁)安装示意图。 Figure 17 is a schematic diagram of the installation of the 8-level beam (the fourth beam).
图18为桁架上弦斜撑及纵梁安装示意图。 Figure 18 is a schematic diagram of the installation of truss upper chord braces and longitudinal beams.
图19为11-8层右侧挑梁安装示意图。 Figure 19 is a schematic diagram of the installation of the cantilever on the right side of the 11-8th floor.
1为第一榀桁架,2为第二榀桁架,3为主横梁,4-1为第一片钢柱框架,4-2为第二片钢柱框架,4-3为第三片钢柱框架,4-4为第四片钢柱框架,5-1为第一跨边纵梁,5-2为第二跨边纵梁,6-1为第一跨间纵梁,6-2为第二跨间纵梁,6-3为第三跨间纵梁,7-1为第一次横梁,7-2为第二次横梁,7-3为第三次横梁,7-4为第四次横梁,8为上弦斜撑及纵梁,9为右侧挑梁,10-1为左侧楼体,10-2为右侧楼体。 1 is the first truss, 2 is the second truss, 3 is the main beam, 4-1 is the first steel column frame, 4-2 is the second steel column frame, 4-3 is the third steel column Frame, 4-4 is the fourth piece of steel column frame, 5-1 is the first side beam, 5-2 is the second side beam, 6-1 is the first span beam, 6-2 is The second span longitudinal beam, 6-3 is the third span longitudinal beam, 7-1 is the first beam, 7-2 is the second beam, 7-3 is the third beam, 7-4 is the first beam Four beams, 8 is the upper chord brace and longitudinal beam, 9 is the cantilever beam on the right side, 10-1 is the left building body, and 10-2 is the right side building body.
具体实施方式 detailed description
某项连廊安装工程,连廊有三层,对应混凝土建筑物的10、9、8层;该工程钢结构属悬挂钢结构,8层-10层具有使用功能的连廊结构是通过11层的钢桁架体系悬挂在钢筋混凝土结构之上。因此,结构以2榀钢桁架受力为主,8层-10层钢梁受力为辅。这样的受力特点,要求钢连廊宜采用由上而下的施工顺序,即与常规顺做法不同的“逆作法”施工顺序。 For a corridor installation project, the corridor has three floors, corresponding to the 10th, 9th, and 8th floors of the concrete building; the steel structure of the project is a suspended steel structure, and the corridor structure with functional functions from the 8th to the 10th floor passes through the 11th floor A system of steel trusses is suspended above the reinforced concrete structure. Therefore, the structure is dominated by 2 steel trusses, supplemented by 8-10 storey steel beams. Such stress characteristics require that the steel corridor should adopt a top-down construction sequence, that is, a "reverse construction method" construction sequence that is different from the conventional straight method.
安装顺序分具体细分为18步,分别为: The installation sequence is subdivided into 18 steps, which are:
第一步:11层左侧第一榀桁架1(悬吊)安装(图2); Step 1: Installation of the first truss 1 (suspension) on the left side of the 11th floor (Figure 2);
第二步:11层右侧第二榀桁架2(悬吊)安装(图3); Step 2: Installation of the second truss 2 (suspension) on the right side of the 11th floor (Figure 3);
第三步:11层桁架间主横梁3(悬吊)安装(图4); Step 3: Installation of the main beam 3 (suspension) between the trusses on the 11th floor (Fig. 4);
第四步:10、9、8层第一片钢柱框架4-1(悬吊)安装(图5); Step 4: Installation of the first piece of steel column frame 4-1 (suspension) on floors 10, 9, and 8 (Figure 5);
第五步:10、9、8层第一跨边纵梁5-1(悬吊)安装(图6); Step 5: Installation of the first span side longitudinal beam 5-1 (suspension) on the 10th, 9th and 8th floors (Fig. 6);
第六步:10、9、8层第二片钢柱框架4-2(悬吊)安装(图7); Step 6: Installation of the second steel column frame 4-2 (suspension) on the 10th, 9th, and 8th floors (Figure 7);
第七步:10、9、8层第一跨间纵梁6-1(悬吊)安装(图8); Step 7: Installation of the longitudinal beam 6-1 (suspension) between the first spans of the 10th, 9th and 8th floors (Fig. 8);
第八步:10、9、8层第三片钢柱框架4-3(悬吊)安装(图9); Step 8: Installation of the third steel column frame 4-3 (suspension) on the 10th, 9th, and 8th floors (Figure 9);
第九步:10、9、8层第二跨间纵梁6-2(悬吊)安装(图10); Step 9: Installation of the longitudinal beam 6-2 (suspension) between the second spans on the 10th, 9th and 8th floors (Fig. 10);
第十步:10、9、8层第四片钢柱框架4-4(悬吊)安装(图11); Step 10: 4-4 (suspension) installation of the fourth steel column frame on the 10th, 9th, and 8th floors (Figure 11);
第十一步:10、9、8层第三跨间纵梁6-3(悬吊)安装(图12); The eleventh step: installation of the longitudinal beam 6-3 (suspension) between the third spans on the 10th, 9th and 8th floors (Fig. 12);
第十二步:10、9、8层第二跨边纵梁5-2(悬吊)安装(图13); The twelfth step: 5-2 (suspension) installation of the second side span longitudinal beam 5-2 (suspension) on the 10th, 9th and 8th floors (Fig. 13);
第十三步:11层桁架间第一次横梁7-1(悬吊)安装(图14); Step 13: Installation of the first beam 7-1 (suspension) between the trusses on the 11th floor (Figure 14);
第十四步:10层第二次横梁7-2(悬吊)安装(图15); Step 14: Installation of the second beam 7-2 (suspension) on the 10th floor (Figure 15);
第十五步:9层第三次横梁7-3(悬吊)安装(图16); Step 15: Installation of the third beam 7-3 (suspension) on the 9th floor (Figure 16);
第十六步:8层第四次横梁7-4(悬吊)安装(图17); Step 16: 7-4 (suspension) installation of the fourth beam on the 8th floor (Figure 17);
第十七步:桁架上弦斜撑及纵梁8(悬吊)安装(图18); Step 17: Installation of truss upper chord bracing and longitudinal beam 8 (suspension) (Figure 18);
第十八步:11-8层右侧挑梁9(悬吊)安装(图19)。如附图所示。 Step 18: Install the cantilever beam 9 (suspension) on the right side of floors 11-8 (Figure 19). As shown in the attached picture.
本发明所述方法施工安全可靠,同时减少了下部支撑体系,降低成本。 The method of the invention is safe and reliable in construction, and at the same time reduces the lower supporting system and reduces the cost.
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CN102691420B (en) * | 2012-06-21 | 2015-04-29 | 中国建筑第八工程局有限公司 | Installation and construction method for multilayer large-span steel truss |
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