阅读说明：本技术 钢结构冷却塔锥段安装用移动式地锚及其施工方法 (Movable ground anchor for mounting conical section of steel structure cooling tower and construction method thereof ) 是由 王庆伟 张永庆 段常智 孙玉霖 李陆军 李鹏 王勇 高磊 宋苹 于 2019-10-16 设计创作，主要内容包括：本发明涉及钢结构间冷塔安装技术领域,特别是涉及钢结构冷却塔锥段安装用移动式地锚及其施工方法,现有使用大量脚手架辅助锥段进行固定安装,施工周期长,占地面积大,钢结构冷却塔锥段安装用移动式地锚,包括地锚本体和吊环,所述吊环包括固定在地锚本体上的地锚吊环、拉锚吊环和与锥段三角单元固定的钢三角吊环,所述钢三角吊环连接缆风绳,所述拉锚吊环连接导链并通过导链连接缆风绳实现在地锚本体与锥段三角单元之间形成受力支撑,避免了施工前期在大范围内安装脚手架,和施工后期拆卸脚手架的工作,占地面积小,施工周期短,在钢结构间冷塔安装技术领域具有良好的发展前景。(The invention relates to the technical field of installation of steel structure indirect cooling towers, in particular to a movable ground anchor for installing a conical section of a steel structure cooling tower and a construction method thereof, wherein the conventional method for fixedly installing a large number of auxiliary conical sections of scaffolds has long construction period and large floor area, the movable ground anchor for installing the conical section of the steel structure cooling tower comprises a ground anchor body and a lifting ring, the lifting rings comprise a ground anchor lifting ring fixed on a ground anchor body, an anchor pulling lifting ring and a steel triangular lifting ring fixed with the conical section triangular unit, the steel triangular lifting ring is connected with the wind rope, the anchor pulling lifting ring is connected with the guide chain and is connected with the wind rope through the guide chain to realize the formation of stressed support between the anchor block body and the conical section triangular unit, thereby avoiding the installation of a scaffold in a large range in the early stage of construction, and the work of dismantling the scaffold in the later stage of construction, the floor area is small, the construction period is short, and the method has a good development prospect in the technical field of the installation of the steel structure indirect cooling tower.)

1. Portable earth anchor is used in installation of steel construction cooling tower cone, including earth anchor body (1) and rings, its characterized in that, rings including fix earth anchor rings (2) on earth anchor body (1), anchor ring (3) and with cone triangle unit (7) fixed steel triangle rings (6), cable wind rope (5) are connected in steel triangle rings (6), anchor ring (3) are connected chain (4) and are realized forming the atress support between earth anchor body (1) and cone triangle unit (7) through chain connection cable wind rope (5).

2. The movable ground anchor for installing and using the conical section of the steel structure cooling tower is characterized in that the steel triangular lifting ring (6) is fixedly connected with the conical section triangular unit (7), the ground anchor lifting ring (2) and the anchor pulling lifting ring (3) are respectively fixed with a ground anchor body (1), and the guide chain (4) is detachably fixed with the cable wind rope (5).

3. The construction method of the movable ground anchor for mounting the conical section of the steel structure cooling tower is characterized by comprising the following steps of:

s1, welding a conical section triangular unit (7) and a steel triangular lifting ring (6) into a whole, fastening a cable rope (5) and the steel triangular lifting ring, and simultaneously embedding a ground anchor lifting ring (2) and a pull anchor lifting ring (3) into a ground anchor body (1) to form a whole;

s2, hoisting the ground anchor body (1) with the ground anchor hoisting ring (2) and the anchor pulling hoisting ring (3) to a pointing position by using a crane, and hoisting the conical section triangular unit (7) in place by using a hoisting machine;

s3, using a guide chain (4) to tie and fix the conical section triangular unit (7) and the ground anchor body (1);

s4, welding the conical section triangular unit (7) with a steel structure;

s5, after the conical section triangular unit (7) forms a stable system within a certain range, loosening a pull knot formed between the conical section triangular unit (7) and the ground anchor body (1) by the guide chain (4);

s6, the anchor block body (1) is moved to the next temporary designated position by using a crane to hoist the anchor block hanging ring (2), and the step S3 is returned to, and the operation step is repeated.

Technical Field

The invention relates to the technical field of steel structure indirect cooling tower installation, in particular to a movable ground anchor for installing a conical section of a steel structure cooling tower and a construction method thereof.

Background

Steel construction cooling tower is energy-conserving, green, the environmental protection, but the construction degree of difficulty is big when its conic section part is installed, the technical content requires more, conic section triangle unit is heavy about 8t, reach 65 with the horizontal inclination, the construction method of current conic section does, set up temporary stand or scaffold frame as interim support, and then carry out welded fastening to the conic section, nevertheless cooling tower bottom radius reaches 77m, every layer height 12 meters of conic section, totally 6 layers, highly reach 65m, conic section construction range is big, therefore, scaffold frame installation and later stage tear volume work task volume open greatly in earlier stage, need longer construction cycle, construction cost is also higher.

Disclosure of Invention

Aiming at the situation and overcoming the defects of the prior art, the invention provides a movable ground anchor for mounting a conical section of a steel structure cooling tower and a construction method thereof, and solves the problems of long construction period and large occupied area caused by the fact that a large number of scaffold auxiliary conical sections are used for fixed mounting.

Its technical scheme is, steel construction cooling tower conical section installation is with portable earth anchor, including carrying out the mobilizable earth anchor body of interim tractive fixed and being used for the rings that the rope is connected usefulness, earth anchor body turnover uses, rings are including fixing earth anchor rings, the anchor ring on the earth anchor body and the steel triangle rings fixed with conical section triangle unit, the cable wind rope is connected to steel triangle rings, the chain is connected to the anchor ring to it realizes forming the atress through the chain connection cable wind rope and supports between earth anchor body and conical section triangle unit.

Further, steel triangle rings and conic section triangle unit fixed connection, this fixed connection mode can be for the welding, the hawser rope is tied firmly with just triangle rings before conic section triangle unit takes one's place, earth anchor rings and anchor ring are fixed with the earth anchor body respectively, earth anchor rings and anchor ring are pre-buried and fix through concreting before the earth anchor body lifts by crane, the chain is led and the hawser rope can be dismantled fixedly, forms interim drawknot between earth anchor body and conic section triangle unit, plays the fixed effect of traction, plays the temporary fixation at the in-process of the fixed conic section triangle unit of installation.

The construction method of the movable ground anchor for mounting the conical section of the steel structure cooling tower comprises the following steps:

s1, welding a conical section triangular unit and a steel triangular lifting ring into a whole, fastening a cable rope and a steel triangular lifting ring, and simultaneously embedding a ground anchor lifting ring and a pull anchor lifting ring into a ground anchor body to form a whole;

s2, hoisting the ground anchor body with the ground anchor hoisting ring and the anchor pulling hoisting ring to a pointing position by using a crane, and hoisting the conical section triangular unit in place by using a hoisting machine;

s3, using a guide chain, pulling the ground anchor body through a pull anchor hanging ring at one end, and pulling the conical section triangular unit through a connecting cable wind rope at one end, so as to finally realize the pulling and fixing of the conical section triangular unit and the ground anchor body;

s4, welding the conical section triangular unit with a steel structure;

s5, after the conical section triangular unit is welded with the steel structure, a stable system is formed with the steel structure within a certain range without traction, at the moment, a temporary tie between the guide chain and the cable rope is loosened, and the conical section triangular unit and the ground anchor body are not mutually dragged;

s6, the anchor block body is moved to the next temporary designated position by using a crane to lift the anchor block lifting ring, the temporary designated position is obtained through mechanical analysis and calculation before movement, the step S3 is returned, and the operation step is repeated until the whole conical section installation work is completed.

The invention has the technical effects that the temporary tie is formed between the movable ground anchor and the conical section triangular unit to be welded, the conical section triangular unit to be welded has a supporting function, the fixed installation of the conical section triangular unit is convenient, the temporary tie is disassembled after the welding is finished, the ground anchor is moved to the specified position obtained by calculation near the pre-installation position of the next conical section, the work of installing a scaffold in a large range in the early construction period and disassembling the scaffold in the later construction period is avoided, the construction period is short, the ground anchor can be repeatedly used, the construction cost is reduced, the geometric dimension of the ground anchor is designed through stress analysis calculation, and compared with the installation of the scaffold, the occupied area is small.

Drawings

FIG. 1 is a schematic view of the construction structure of the ground anchor body of the present invention.

Fig. 2 is a schematic view of the installation plane structure of the cone section of the invention.

1. The anchor block comprises an anchor block body, 2 anchor block rings, 3 anchor pulling rings, 4 guide chains, 5 guy cables, 6 steel triangular rings and 7 conical section triangular units.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.