CN103061514B - Long-span steel structure corridor construction method - Google Patents
Long-span steel structure corridor construction method Download PDFInfo
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- CN103061514B CN103061514B CN201210447112.2A CN201210447112A CN103061514B CN 103061514 B CN103061514 B CN 103061514B CN 201210447112 A CN201210447112 A CN 201210447112A CN 103061514 B CN103061514 B CN 103061514B
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Abstract
Description
技术领域technical field
本发明涉及一种钢结构施工方法，特别是一种大跨度钢结构连廊施工方法。The invention relates to a steel structure construction method, in particular to a long-span steel structure corridor construction method.
背景技术Background technique
现有技术中的高空大跨度多层钢结构施工时一般都是现场组装后在通过吊机直接吊装，这种方式存在以下缺点，现场需要有比较大的安装场地，才能完成安装。另一方面使用的吊机也需要占用巨大的场地。所以这种施工方式并不适合在一些使用中的公共设施周围使用。The high-altitude and large-span multi-layer steel structure in the prior art is generally assembled on site and then directly hoisted by a crane. This method has the following disadvantages. The site needs a relatively large installation site to complete the installation. On the other hand, the crane used also needs to take up a huge space. Therefore, this construction method is not suitable for use around some public facilities in use.
发明内容Contents of the invention
本发明的目的是为了解决上述技术的不足而提供一种施工方便，占用施工场地少，且使用吊机小，安装后结构牢固的大跨度钢结构连廊施工方法。The object of the present invention is to provide a construction method for a long-span steel structure corridor that is convenient for construction, occupies less construction site, uses a small crane, and has a firm structure after installation.
为了达到上述目的，本发明所设计的大跨度钢结构连廊施工方法，首先安装跨度两侧的支撑钢柱，然后吊装横向水平钢梁，接着安装横向水平钢梁之间的支撑钢梁及斜撑钢梁，再安装两根横向水平钢梁之间的纵向水平钢梁以及跨水平拉杆，最后安装施工需要的横向钢梁，其特征是在安装支撑钢柱之后，先在两支撑钢柱之间安装辅助桁架，以辅助桁架为吊点吊装横向水平钢梁，再安装完横向水平钢梁之间的支撑钢梁及斜撑钢梁后拆除辅助桁架。这种施工方法的特点在于利用辅助桁架安装体积最大的横向水平钢梁，整个钢结构则采用散件吊装方式，降低了对周围施工的场地需要，也降低了对吊机的要求。In order to achieve the above purpose, the construction method of the large-span steel structure corridor designed by the present invention first installs the supporting steel columns on both sides of the span, then hoisting the horizontal horizontal steel beams, and then installing the supporting steel beams between the horizontal horizontal steel beams and the inclined Support steel beams, then install the longitudinal horizontal steel beams between the two horizontal steel beams and the horizontal tie rods, and finally install the horizontal steel beams required for construction. Install the auxiliary truss between them, use the auxiliary truss as the lifting point to hoist the horizontal steel beam, and then remove the auxiliary truss after installing the supporting steel beams and diagonal steel beams between the horizontal steel beams. The feature of this construction method is to use the auxiliary truss to install the largest horizontal steel beam, and the entire steel structure is hoisted in pieces, which reduces the need for surrounding construction sites and cranes.
为了提高施工完成后得到的钢结构的结构稳定性，施工前通过计算得到高空钢梁因自重形成的弹性形变，然后在施工时以辅助桁架为吊点时安装时，分别根据计算结果调整横向水平钢梁的形变。同时所述的根据计算结果调整横向水平钢梁的形变，是通过拉力葫芦调整横向水平钢梁的位置。这种方式在施工时预测了钢梁的形变影响，直接在施工时为钢梁形变提供预留余量，使得施工完成后的整个结构稳定。In order to improve the structural stability of the steel structure obtained after the construction is completed, the elastic deformation of the high-altitude steel beam due to its own weight is obtained through calculation before construction, and then when the auxiliary truss is used as the lifting point during construction, the horizontal level is adjusted according to the calculation results. Deformation of steel beams. At the same time, the adjustment of the deformation of the horizontal steel beam according to the calculation result is to adjust the position of the horizontal steel beam through a pull hoist. This method predicts the influence of the deformation of the steel beam during construction, and directly provides a reserve margin for the deformation of the steel beam during construction, making the entire structure stable after construction.
本发明所得到的大跨度钢结构连廊施工方法,通过散件吊装的方法，并利用安装较为简便的辅助桁架作为吊点，安装跨度巨大的横向水平钢梁，并预先设置了钢梁形变的余量，使得大部分情况下，支撑钢柱之间都有横向连接支撑存在，使得整个钢结构在散件吊装时就处于比较稳定的结构状态下，并最终完成整施工。另外，由于可以利用辅助桁架作为吊点，降低了吊装的难度，也为事先调整钢梁形变余量创造了条件。综上所述，本发明所得到的大跨度钢结构连廊施工方法具有设计合理，施工场地小，速度快，成本低，且施工得到的钢结构稳定性好的特点。The construction method of the large-span steel structure corridor obtained in the present invention adopts the method of hoisting parts, and uses the auxiliary truss which is relatively easy to install as the hoisting point, installs the horizontal steel beam with a huge span, and pre-sets the deformation of the steel beam. In most cases, there are horizontal connection supports between the supporting steel columns, so that the entire steel structure is in a relatively stable structural state when the parts are hoisted, and the whole construction is finally completed. In addition, since the auxiliary truss can be used as the lifting point, the difficulty of lifting is reduced, and it also creates conditions for adjusting the deformation allowance of the steel beam in advance. In summary, the construction method of the long-span steel structure corridor obtained by the present invention has the characteristics of reasonable design, small construction site, high speed, low cost, and good stability of the steel structure obtained by construction.
附图说明Description of drawings
图1是本发明的主视图；Fig. 1 is the front view of the present invention;
图2是本发明使用辅助桁架结构示意图；Fig. 2 is a schematic diagram of the auxiliary truss structure used in the present invention;
图3是本发明拆除辅助桁架后施工结构示意图。Fig. 3 is a schematic diagram of the construction structure after the auxiliary truss is removed according to the present invention.
具体实施方式Detailed ways
下面通过实施例结合附图对本发明作进一步的描述。The present invention will be further described below with reference to the accompanying drawings.
实施例1：Example 1:
如图所示，本实施例描述的大跨度钢结构连廊施工方法，如图1所示，首先安装跨度两侧的支撑钢柱1，在两支撑钢柱1之间安装辅助桁架2。然后如图2所示，以辅助桁架2为吊点7吊装横向水平钢梁3，接着安装上下两根横向水平钢梁3之间的支撑钢梁8及斜撑钢梁4。接着如图3所示，拆除辅助桁架2，再安装两根横向水平钢梁3之间的纵向水平钢梁以及跨水平拉杆，最后安装施工需要的横向钢梁6。As shown in the figure, the construction method of the long-span steel structure corridor described in this embodiment, as shown in Figure 1, first installs the supporting steel columns 1 on both sides of the span, and installs the auxiliary truss 2 between the two supporting steel columns 1. Then as shown in Figure 2, the horizontal horizontal steel beam 3 is hoisted with the auxiliary truss 2 as the lifting point 7, and then the supporting steel beam 8 and the diagonal steel beam 4 between the upper and lower horizontal horizontal steel beams 3 are installed. Then, as shown in FIG. 3 , the auxiliary truss 2 is removed, and then the longitudinal horizontal steel beam between the two horizontal horizontal steel beams 3 and the horizontal tie rods are installed, and finally the horizontal steel beam 6 required for construction is installed.
另一方面，通过计算得到高空钢梁因自重形成的弹性形变，以辅助桁架2为吊点安装时，分别根据计算结果通过拉力葫芦调整横向水平钢梁3的位置，以调整横向水平钢梁3的形变。On the other hand, the elastic deformation of the high-altitude steel beam due to its own weight is obtained through calculation. When the auxiliary truss 2 is used as the lifting point for installation, the position of the horizontal steel beam 3 is adjusted through the pull hoist respectively according to the calculation results to adjust the horizontal steel beam 3. deformation.
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| CN103912128B (en) * | 2014-02-28 | 2015-12-30 | 中国建筑第五工程局有限公司广州分公司 | The construction method of high-altitude disjunctor steel truss |
| CN105507600A (en) * | 2016-01-27 | 2016-04-20 | 中国中铁航空港建设集团有限公司 | Hoisting system and hoisting construction method for large steel corridor trusses |
| 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 |
| CN110017024A (en) * | 2019-04-22 | 2019-07-16 | 上海建工一建集团有限公司 | The construction method of the horizontal girder steel of contrary sequence method basement |
| CN110984589A (en) * | 2019-11-29 | 2020-04-10 | 中国二十二冶集团有限公司 | Method for mounting assembly platform of super-long steel beam high altitude |
| CN117780113A (en) * | 2023-12-22 | 2024-03-29 | 中建八局第三建设有限公司 | An overall lifting method for indoor large-span steel connecting bridges with tie rods |
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| CN101033636A (en) * | 2007-03-23 | 2007-09-12 | 北京城建集团有限责任公司 | Large span bidirectional string stretching girders rope accumulation slippage construction method |
| CN101446135A (en) * | 2008-12-25 | 2009-06-03 | 上海市第一建筑有限公司 | Integral hoisting system for superaltitude overlong jumbo beam by truss method and construction method thereof |
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| JPH04153460A (en) * | 1990-10-17 | 1992-05-26 | Mitsubishi Heavy Ind Ltd | Building construction methods and equipment |
| JPH0882100A (en) * | 1994-09-08 | 1996-03-26 | Takenaka Komuten Co Ltd | Lift-up method for constructing catwalk |
| CN101033636A (en) * | 2007-03-23 | 2007-09-12 | 北京城建集团有限责任公司 | Large span bidirectional string stretching girders rope accumulation slippage construction method |
| CN101446135A (en) * | 2008-12-25 | 2009-06-03 | 上海市第一建筑有限公司 | Integral hoisting system for superaltitude overlong jumbo beam by truss method and construction method thereof |
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