阅读说明：本技术 钢混组合塔节段临时吊点装置及实施方法 (Temporary hoisting point device for steel-concrete combined tower section and implementation method ) 是由 王晓辉 张文才 李艳停 田景辉 杨宝堂 于 2021-08-20 设计创作，主要内容包括：本发明涉及一种根据钢混组合塔结构构造,结合起重吊装方式,以便宜施工、安全可靠为原则,设计了一种在钢塔内仓板上开设临时吊点孔并采用补强方式达到受力要求的吊点构造,避免了传统临时吊点安装对后期施工作业的影响与拆除问题,有利于提高施工效率、保证施工安全与节约成本的钢混组合塔节段临时吊点装置及实施方法,包括钢混组合塔节段,在钢混组合塔节段内仓板上设置临时吊点装置。所述临时吊点装置是指在钢混组合塔节段对称的四个内仓板顶部刚性大不影响结构处开设临时吊点孔,并采用双侧补强板进行临时吊点区结构加强,达到吊装应力的要求；采用二根15m长钢丝绳对角连接临时吊点与吊钩,满足单钩吊装的角度与平衡要求。(The invention relates to a temporary hoisting point device for a steel-concrete combined tower section and an implementation method, wherein the temporary hoisting point device is designed by combining a hoisting mode according to a steel-concrete combined tower structure and taking cheap construction, safety and reliability as principles, wherein a temporary hoisting point hole is formed in an inner bin plate of a steel tower, and a reinforcing mode is adopted to meet the stress requirement, so that the problems of influence and dismantling of the traditional temporary hoisting point installation on later construction operation are solved, the construction efficiency is improved, the construction safety is ensured, and the cost is saved. The temporary hoisting point device is characterized in that temporary hoisting point holes are formed in positions, which have high rigidity and do not influence the structure, of the tops of four symmetrical inner bin plates of the reinforced concrete combined tower section, and the structures of temporary hoisting point regions are reinforced by adopting reinforcing plates on two sides, so that the requirement of hoisting stress is met; two 15m long steel wire ropes are adopted to diagonally connect the temporary hoisting point and the hoisting hook, so that the angle and balance requirements of single-hook hoisting are met.)

1. The utility model provides a temporary hoisting point device of steel-concrete combined tower segment, includes steel-concrete combined tower segment, characterized by: and arranging a temporary hoisting point device on the inner bin plate of the reinforced concrete combined tower section.

2. The temporary hoisting point device for the steel-concrete combined tower section according to claim 1, which is characterized in that: the temporary hoisting point device is characterized in that temporary hoisting point holes (3) are formed in the tops of four symmetrical inner bin plates of the reinforced concrete combined tower section, and a double-side reinforcing plate (4) is adopted for reinforcing the structure of a temporary hoisting point area to meet the requirement of hoisting stress; two 15m long steel wire ropes are adopted to diagonally connect the temporary hoisting point and the hoisting hook, so that the angle and balance requirements of single-hook hoisting are met.

3. The temporary hoisting point device for the steel-concrete combined tower section according to claim 1, which is characterized in that: the temporary hoisting point device does not need to be dismantled after being used, and the post-cast concrete filling is carried out by utilizing the steel-concrete combined tower.

4. The temporary hoisting point device for the steel-concrete combined tower section as claimed in claim 2, wherein: the temporary hoisting point bilateral reinforcing plates and the inner bin plate are connected by adopting a double-sided circumferential fillet weld (2).

5. The temporary hoisting point device for the steel-concrete combined tower section as claimed in claim 4, wherein: the sizes of the double-side reinforcing plates and the inner bin plate are determined by the lifting capacity by adopting double-side circumferential welding feet.

6. An implementation method of a temporary hoisting point device for a section of a reinforced concrete combined tower is characterized by comprising the following steps: according to the structural characteristics of the steel-concrete combined tower segment, temporary hoisting point holes are formed in the inner bin plate, local reinforcing plates 4 are arranged, four groups of temporary hoisting points are arranged on each segment, the structure of the hoisting point position needs to meet the requirement of hoisting, and the stress of the structure and the welding line needs to meet the requirement of the design standard, specifically as follows:

(1) the construction requirement of the temporary hoisting point is as follows: the position of the temporary hoisting point needs to be reasonably determined by combining structural characteristics and hoisting modes, and the included angle (1) between the steel wire rope and the vertical direction is ensured to be less than 45 degrees during hoisting; the aperture and the precision of the temporary hoisting point are required to meet the connection requirement of the pin shaft; the thickness of the temporary hoisting point structure needs to meet the connection requirement of the clamping ring; the position of the temporary hoisting point does not conflict with the structure, and the use of the temporary hoisting point does not influence the later steel structure construction operation;

(2) and (3) analyzing the stress of the temporary hoisting point structure: checking and calculating the structural stress of the temporary hoisting point part, and carrying out checking and calculating according to the design specification requirement of the steel structure, wherein the safety coefficient of the temporary hoisting point part is not lower than the specification requirement;

(3) and (3) analyzing the stress of the temporary hoisting point welding line: and calculating the effective thickness of the welding line according to the designed cross section size of the welding line, and calculating the length of the welding line of the temporary hoisting point structure, so as to calculate the stress of the connecting welding line and whether the stress requirement of the welding line is met.

Technical Field

The invention relates to a temporary hoisting point device for a section of a steel-concrete combined tower and an implementation method, which are designed according to the structure of a steel-concrete combined tower, are combined with a hoisting mode, and take cheap construction, safety and reliability as principles, wherein a temporary hoisting point hole is formed in an inner bin plate of the steel tower, and a reinforcing mode is adopted to meet the stress requirement, so that the problems of influence and dismantling of the traditional temporary hoisting point installation on later construction operation are solved, the construction efficiency is improved, the construction safety is ensured, and the cost is saved, and the temporary hoisting point device and the implementation method belong to the field of manufacturing of super-huge steel-concrete bridges.

Background

If welding or bolt plate type temporary hoisting points are arranged according to the traditional mode, the steel-concrete combined tower segment structure has the following problems: firstly, the flitch type temporary hoisting points occupy the port positions of the segments to influence the installation and alignment of the segments of the reinforced concrete combined tower; secondly, the gravity center of the vertical temporary hoisting point deviates, so that the local deformation of the segment is easily caused when the segment is hoisted; thirdly, the steel-concrete combined tower is compact in structure, temporary hoisting points are arranged at the ports of the segments in a traditional mode, and construction operation is inconvenient; fourthly, considering the installation period of the bridge site, the turnover rate of the temporary hoisting points is low, and the traditional temporary hoisting points are made of more materials and are not beneficial to cost control; fifthly, after the traditional temporary hoisting point is used, the high-altitude dismantling is carried out at the bridge position and the hoisting is carried out to the ground, so that the construction cost of the bridge position is high.

Disclosure of Invention

The design purpose is as follows: the temporary hoisting device for the steel-concrete combined tower segment is designed for solving the problem of the traditional temporary hoisting point generated in the installation of the steel-concrete combined tower segment, the temporary hoisting point holes are formed in the positions, which do not influence the structure, of the tops of four symmetrical inner bin plates of the temporary hoisting point device by means of steel-concrete combined tower segment forming units, and the temporary hoisting point region is structurally reinforced by adopting reinforcing plates on two sides, so that the requirement of hoisting stress is met; two 15m long steel wire ropes are adopted to diagonally connect the temporary hoisting point and the hoisting hook, so that the angle and balance requirements of single-hook hoisting are met; the temporary hoisting point does not need to be dismantled after use, and can be filled with post-cast concrete of the steel-concrete combined tower.

The design scheme is as follows: in order to achieve the above design objectives. In the structural design, the temporary hoisting point device is arranged on the inner bin plate of the section of the reinforced concrete combined tower, and a hoisting point hole (the hole size is determined by the diameter of a hoisting pin shaft and the process quantity) is formed by adopting precision cutting equipment when a corresponding plate unit is manufactured, so that the hole wall can be processed if necessary, and the requirement on the flatness of the hole wall is ensured; according to the stress requirement of the temporary hoisting point, the specification (specification, shape and size are determined by hoisting capacity, hoisting snap ring and the like) of the reinforcing plate of the temporary hoisting point is determined by checking, precision cutting equipment is adopted for blanking, and the inner wall of the hole is processed if necessary; the temporary hoisting point reinforcing plate and the hoisting point hole of the inner bin plate are installed in a hole center alignment mode, and the flatness of the upper half arc of the hoisting point hole is mainly guaranteed; the temporary hoisting point reinforcing plate and the inner bin plate are connected by adopting a double-sided circumferential fillet weld (the size of a welding leg is determined by the hoisting capacity).

According to the structural characteristics of the steel-concrete combined tower segment, a proper position is selected, temporary hoisting point holes and local reinforcing plates are arranged on the inner chamber plate, four groups of temporary hoisting points are arranged on each segment, the structure of the hoisting point position needs to meet the requirements of hoisting, and the stress of the structure and welding lines needs to meet the requirements of design standards. The method comprises the following specific steps:

(1) the construction requirement of the temporary hoisting point is as follows: the position of the temporary hoisting point needs to be reasonably determined by combining structural characteristics and hoisting modes, and the included angle between the steel wire rope and the vertical direction is ensured to be less than 45 degrees during hoisting; the aperture and the precision of the temporary hoisting point are required to meet the connection requirement of the pin shaft; the thickness of the temporary hoisting point structure needs to meet the connection requirement of the clamping ring; the position of the temporary hoisting point does not conflict with the structure, and the use of the temporary hoisting point does not influence the construction operation of the later steel structure.

(2) And (3) analyzing the stress of the temporary hoisting point structure: and checking and calculating the structural stress of the temporary hoisting point part, and checking and calculating according to the design specification requirement of the steel structure, wherein the safety coefficient of the temporary hoisting point part is not lower than the specification requirement.

(3) And (3) analyzing the stress of the temporary hoisting point welding line: and calculating the effective thickness of the welding line according to the designed cross section size of the welding line, and calculating the length of the welding line of the temporary hoisting point structure, so as to calculate the stress of the connecting welding line and whether the stress requirement of the welding line is met.

The technical scheme 1: the temporary hoisting point device comprises a reinforced concrete combined tower segment, wherein the temporary hoisting point device is arranged on a bin plate in the reinforced concrete combined tower segment.

The technical scheme 2 is as follows: an implementation method of a temporary hoisting point device for a steel-concrete combined tower segment is characterized in that according to structural characteristics of the steel-concrete combined tower segment, temporary hoisting point holes and local reinforcing plates are formed in an inner chamber plate, four groups of temporary hoisting points are arranged on each segment, the structure of the hoisting point position needs to meet the requirements of hoisting, and the stress of the structure and welding lines of the hoisting point position needs to meet the requirements of design standards, and specifically comprises the following steps:

(1) the construction requirement of the temporary hoisting point is as follows: the position of the temporary hoisting point needs to be reasonably determined by combining structural characteristics and hoisting modes, and the included angle between the steel wire rope and the vertical direction is ensured to be less than 45 degrees during hoisting; the aperture and the precision of the temporary hoisting point are required to meet the connection requirement of the pin shaft; the thickness of the temporary hoisting point structure needs to meet the connection requirement of the clamping ring; the position of the temporary hoisting point does not conflict with the structure, and the use of the temporary hoisting point does not influence the later steel structure construction operation;

(2) and (3) analyzing the stress of the temporary hoisting point structure: checking and calculating the structural stress of the temporary hoisting point part, and carrying out checking and calculating according to the design specification requirement of the steel structure, wherein the safety coefficient of the temporary hoisting point part is not lower than the specification requirement;

(3) and (3) analyzing the stress of the temporary hoisting point welding line: and calculating the effective thickness of the welding line according to the designed cross section size of the welding line, and calculating the length of the welding line of the temporary hoisting point structure, so as to calculate the stress of the connecting welding line and whether the stress requirement of the welding line is met.

Compared with the background art, the temporary hoisting point has the advantages that the structure is simple, the special hoisting lug is not required to be manufactured independently, and the use amount of steel is saved; the temporary hoisting points are not required to be dismantled after being used, the high-altitude dismantling difficulty and hoisting cost of bridge positions are reduced, and the sealing performance of the structure is not influenced by directly adopting concrete pouring plugging; thirdly, the temporary hoisting points are flexibly arranged and have strong adaptability, and the rigidity requirement of the installation position of the traditional temporary hoisting points and the influence on the later positioning assembly relation are avoided; fourthly, the temporary hoisting point is arranged by means of the main structure body, so that the bearing capacity is high, and the safety is good.

Drawings

Fig. 1 is a schematic diagram of the arrangement position and the construction of the temporary hoisting point on the plate unit.

FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1.

Fig. 3 is a schematic view of the use of the temporary suspension point.

Fig. 4 is a simplified schematic diagram of fig. 3.

FIG. 5 is a schematic structural view of a steel-concrete combined tower segment of an east coast bay bridge.

Detailed Description

Example 1: see figures 1-5. The temporary hoisting point device comprises a reinforced concrete combined tower segment, wherein the temporary hoisting point device is arranged on a bin plate in the reinforced concrete combined tower segment. The temporary hoisting point device is characterized in that temporary hoisting point holes 3 are formed in proper positions of the tops of four symmetrical inner bin plates of the reinforced concrete combined tower section, and a double-side reinforcing plate 4 is adopted for carrying out structural reinforcement on a temporary hoisting point area to meet the requirement of hoisting stress; two 15m long steel wire ropes are adopted to diagonally connect the temporary hoisting point and the hoisting hook, so that the angle and balance requirements of single-hook hoisting are met. The temporary hoisting point device does not need to be dismantled after being used, and the post-cast concrete filling is carried out by utilizing the steel-concrete combined tower. The temporary hoisting point double-side reinforcing plate 4 is connected with the inner bin plate by adopting a double-side circumferential fillet weld 2. The sizes of the double-side reinforcing plates and the inner bin plate are determined by the lifting capacity by adopting double-side circumferential welding feet.

Example 2: on the basis of the embodiment 1, an implementation method of a temporary hoisting point device for a steel-concrete combined tower segment is characterized in that according to structural characteristics of the steel-concrete combined tower segment, temporary hoisting point holes are formed in an inner bin plate and local reinforcing plates are arranged, four groups of temporary hoisting points are arranged on each segment, the structure of each section of the section of each section of the section of each section of the section of each:

(1) the construction requirement of the temporary hoisting point is as follows: the position of the temporary hoisting point needs to be reasonably determined by combining structural characteristics and hoisting modes, and the included angle 1 between the steel wire rope and the vertical direction is ensured to be less than 45 degrees during hoisting; the aperture and the precision of the temporary hoisting point are required to meet the connection requirement of the pin shaft; the thickness of the temporary hoisting point structure needs to meet the connection requirement of the clamping ring; the position of the temporary hoisting point does not conflict with the structure, and the use of the temporary hoisting point does not influence the later steel structure construction operation;

(2) and (3) analyzing the stress of the temporary hoisting point structure: checking and calculating the structural stress of the temporary hoisting point part, and carrying out checking and calculating according to the design specification requirement of the steel structure, wherein the safety coefficient of the temporary hoisting point part is not lower than the specification requirement;

(3) and (3) analyzing the stress of the temporary hoisting point welding line: and calculating the effective thickness of the welding line according to the designed cross section size of the welding line, and calculating the length of the welding line of the temporary hoisting point structure, so as to calculate the stress of the connecting welding line and whether the stress requirement of the welding line is met.

The temporary hoisting point structure is subjected to numerical control precision cutting together when the structural part is blanked, the reinforcing plate 4 is also subjected to numerical control precision cutting, the hole center is aligned, the upper edge of the hole is aligned, assembled, welded and detected when the plate unit is assembled, and the temporary hoisting point structure and the plate unit participate in segment manufacturing together. After the segment is manufactured, the temporary hoisting point is connected with the steel wire rope by using the clamping ring, and hoisting operation of the segment is carried out; and after the hoisting is finished, the clamp ring is detached, and when concrete is poured into the steel-concrete combined tower, the steel-concrete combined tower is filled together.

The temporary hoisting point is simple in structure, the existing characteristics of the reinforced concrete combined tower are utilized, the design is carried out by combining the structural characteristics, the adaptability is strong, the construction workload is reduced, the construction cost is reduced, and the temporary hoisting point has higher practicability and popularization value for the reinforced concrete combined structure.

In fig. 5, a main body structural plate 5, a vertical rib plate 6, a horizontal rib plate 7, a shear nail 8 and a twisted steel bar 9 form a bridge reinforced concrete combined tower segment, temporary hoisting point holes 3 are formed at proper positions of the tops of four symmetrical inner bin plates of the bridge reinforced concrete combined tower segment, and a double-side reinforcing plate 4 is adopted to reinforce the structure of a temporary hoisting point region, so that the requirement of hoisting stress is met; the temporary hoisting point and the hoisting hook are connected by adopting 2 steel wire ropes with the length of 15m in opposite angles, so that the angle and balance requirements of single-hook hoisting are met.

It is to be understood that: although the above embodiments have described the design idea of the present invention in more detail, these descriptions are only simple descriptions of the design idea of the present invention, and are not limitations of the design idea of the present invention, and any combination, addition, or modification without departing from the design idea of the present invention falls within the scope of the present invention.