阅读说明：本技术 一种反向倒插构件安装的吊装方法 (Hoisting method for reverse insertion component installation ) 是由 赫宏伟 岳旭光 李长荣 董福歧 付建胜 张福强 冯伟 岐阳杰 肖大勇 唐金生 王 于 2021-09-07 设计创作，主要内容包括：本发明公开了一种反向倒插构件安装的吊装方法,包括以下步骤：加工制作吊装工装：根据设计图纸进行加工下料,并组对焊接,焊接时保证焊缝为满焊并在端部进行包角焊接；焊接腹杆吊耳：在腹杆构件上焊接腹杆吊耳,所述腹杆吊耳根据腹杆构件安装角度进行准确放样,确保所述腹杆吊耳在所述腹杆构件中心的铅垂线上；焊接对接口定位装置：在所述腹杆构件预拼装时焊接定位装置；腹杆吊装初就位；腹杆与定位装置匹配连接。本发明大大节省了现场施工的工作量,避免了在主构件上焊接多个吊点,很好地进行了构件的成品保护。(The invention discloses a hoisting method for mounting a reverse insertion component, which comprises the following steps: processing and manufacturing a hoisting tool: processing and blanking according to a design drawing, and performing assembly welding, wherein during welding, a welding seam is ensured to be full-length welding, and fillet welding is performed at the end part; welding the web member lifting lug: welding a web member lifting lug on a web member, and accurately setting out the web member lifting lug according to the installation angle of the web member to ensure that the web member lifting lug is on the plumb line of the center of the web member; welding a butt joint positioning device: welding a positioning device when the web member is pre-assembled; hoisting the web member to be in place initially; the web member is connected with the positioning device in a matching way. The invention greatly saves the workload of site construction, avoids welding a plurality of hoisting points on the main component and well protects the finished product of the component.)

1. A hoisting method for mounting a reverse insertion component is characterized in that:

the method comprises the following steps:

processing and manufacturing a hoisting tool: processing and blanking according to a design drawing, and performing assembly welding, wherein during welding, a welding seam is ensured to be full-length welding, and fillet welding is performed at the end part;

welding the web member lifting lug: welding a web member lifting lug on a web member, and accurately setting out the web member lifting lug according to the installation angle of the web member to ensure that the web member lifting lug is on the plumb line of the center of the web member;

welding a butt joint positioning device: welding a positioning device when the web member is pre-assembled;

the web member is hoisted to be in place for the first time: hooking a hoisting tool, wherein the hoisting tool sequentially comprises a chain block and a web member to be installed, slowly moving to an installation position after hooking, sleeving an upper chord overhanging part into a square-shaped structure of the hoisting tool, aligning the web member to be above the installation position, keeping the web member still, and putting the web member to be accurately positioned by operating the chain block;

the web member is connected with the positioning device in a matching way: after the web member is placed at the accurate position, the matching device at the joint is connected through the bolt, the gap between the upper joint and the lower joint is adjusted, the uniform gap at the two ends is ensured, the misalignment amount meets the standard requirement, the chain block is continuously placed, and the hook is unhooked to finish the hoisting operation.

2. The hoisting method for reverse inverted insertion component installation according to claim 1, wherein the hoisting method comprises the following steps: the hoisting tool comprises a square-shaped structure, two sides of the square-shaped structure are respectively provided with a first lifting lug, the first lifting lugs are used for connecting a steel wire rope of hoisting equipment, and the bottom of the square-shaped structure is provided with a chain block.

3. The hoisting method for reverse inverted insertion component installation according to claim 1, wherein the hoisting method comprises the following steps: and in the step, the web member is hoisted in place initially, and the hoisting tool is directly hooked by the hoisting trolley.

4. The hoisting method for reverse inverted insertion component installation according to claim 2, wherein: the hoisting tool is made of I-shaped steel.

Technical Field

The invention belongs to the technical field of civil construction, and particularly relates to a hoisting method for mounting a reverse insertion component.

Background

The steel structure has the characteristics of light self weight, high working reliability, good earthquake resistance and impact resistance and the like, various structural forms with attractive shapes can be designed, and landscape structures which are suitable for cities and have attractive appearances are built so as to adapt to the gradual development of bridge structures and achieve harmony and unity with the nature. However, the complex structure will bring certain difficulties to the construction and production, and the corresponding installation scheme and installation process need to be designed according to the specific structure in the installation and construction process.

For example, the general canal steel aqueduct engineering of the vessel is in a beam arch combined structure form, the component form is complex, and the joint connection of various forms can appear during the installation. According to the division and installation sequence of the main truss sections of the steel aqueduct, two butt joints of the web member are respectively on the upper chord of the previous section and the lower chord of the section, the upper part of the web member has no space of a hoisting hook head, and the hoisting operation can not be effectively finished by the existing hoisting method.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a hoisting method for mounting a reverse insertion component.

The specific technical scheme of the invention is as follows:

a hoisting method for mounting a reverse insertion component,

the method comprises the following steps:

processing and manufacturing a hoisting tool: processing and blanking according to a design drawing, and performing assembly welding, wherein during welding, a welding seam is ensured to be full-length welding, and fillet welding is performed at the end part;

welding the web member lifting lug: welding a web member lifting lug on a web member, and accurately setting out the web member lifting lug according to the installation angle of the web member to ensure that the web member lifting lug is on the plumb line of the center of the web member;

welding a butt joint positioning device: welding a positioning device when the web member is pre-assembled;

the web member is hoisted to be in place for the first time: hooking a hoisting tool, wherein the hoisting tool sequentially comprises a chain block and a web member to be installed, slowly moving to an installation position after hooking, sleeving an upper chord overhanging part into a square-shaped structure of the hoisting tool, aligning the web member to be above the installation position, keeping the web member still, and putting the web member to be accurately positioned by operating the chain block;

the web member is connected with the positioning device in a matching way: after the web member is placed at the accurate position, the matching device at the joint is connected through the bolt, the gap between the upper joint and the lower joint is adjusted, the uniform gap at the two ends is ensured, the misalignment amount meets the standard requirement, the chain block is continuously placed, and the hook is unhooked to finish the hoisting operation.

As an optimal technical scheme, the hoisting tool comprises a square-shaped structure, first lifting lugs are arranged on two sides of the square-shaped structure respectively and used for connecting a steel wire rope of hoisting equipment, and a chain block is arranged at the bottom of the square-shaped structure.

As an optimal technical scheme, in the step of primary positioning of web member hoisting, a hoisting tool is directly hooked by a hoisting trolley.

As an optimal technical scheme, the hoisting tool is prepared by adopting the industrial steel.

Has the advantages that:

the invention greatly saves the workload of site construction, avoids welding a plurality of hoisting points on the main component and well protects the finished product of the component.

The invention saves the cost of installation labor and equipment and reduces the secondary treatment cost of component damage.

The invention can realize one-time hoisting in place, saves the time and cost of construction and greatly accelerates the construction progress.

The invention minimizes the installation risk.

The invention solves the installation problem of the similar component of the full bridge through a tool, and has strong reusability and simple manufacture and maintenance.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a flow chart in an embodiment of the present invention.

Fig. 2 is a diagram of web lifting lug positions in an embodiment of the invention.

Fig. 3 is a schematic view of a hoisting tool in the embodiment of the invention.

Figure 4 is a force diagram of a lifting member in an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention will now be further described with reference to the accompanying drawings.

The embodiment of the invention relates to a hoisting method for installing a reverse plug component, which is shown in figure 1 and comprises the following steps:

processing and manufacturing a hoisting tool: processing and blanking according to a design drawing, and performing assembly welding, wherein during welding, a welding seam is ensured to be full-length welding, and fillet welding is performed at the end part;

in the embodiment of the invention, as shown in fig. 3, the hoisting tool comprises a square structure, two sides of the square structure are respectively provided with a first lifting lug, the first lifting lugs are used for connecting a steel wire rope of hoisting equipment, and the bottom of the square structure is provided with a chain block. The square-shaped structure is composed of a main beam, a vertical support and a transverse support, wherein the main beam is made of I-shaped steel I20A, and the vertical support and the transverse support are made of I-shaped steel I10.

The hoisting tool is made of materials which cannot be rusted seriously, blanking processing is carried out according to the drawing size, the edges are polished to be qualified and then are assembled and welded, all welding parts are fillet welds of 8mm in full welding, and appearance defects cannot exist.

Welding the web member lifting lug: welding a web member lifting lug on a web member, wherein as shown in fig. 2, the web member lifting lug is accurately lofted according to the installation angle of the web member, and the web member lifting lug is ensured to be on the plumb line of the center of the web member;

welding a butt joint positioning device: welding a positioning device when the web member is pre-assembled;

the web member is hoisted to be in place for the first time: hooking a hoisting tool, wherein the hoisting tool sequentially comprises a chain block and a web member to be installed, slowly moving to an installation position after hooking, sleeving an upper chord overhanging part into a square-shaped structure of the hoisting tool, aligning the web member to be above the installation position, keeping the web member still, and putting the web member to be accurately positioned by operating the chain block;

the web member is connected with the positioning device in a matching way: after the web member is placed at the accurate position, the matching device at the joint is connected through the bolt, the gap between the upper joint and the lower joint is adjusted, the uniform gap at the two ends is ensured, the misalignment amount meets the standard requirement, the chain block is continuously placed, and the hook is unhooked to finish the hoisting operation.

In the embodiment of the invention, the web member stress diagram is shown in fig. 4, the hoisting tool size is shown in fig. 3, for example, the maximum weight of the hoisting member is 45KN, and the main beam is made of I20A I-steel.

W_X＝237×10mm³

M＝22.5×2＝45KN.M

Through calculation, the main structure of the tool is safe, and in order to reduce the dead weight of the tool, the tool is designed and manufactured in a relatively small section mode on the premise of ensuring the construction safety.

In conclusion, the invention greatly reduces the installation time of the components, improves the installation efficiency and reduces the installation cost.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.