阅读说明：本技术 一种辅助桩基钢筋笼下放的定位保护装置及施工方法 (Positioning protection device for assisting in lowering of pile foundation reinforcement cage and construction method ) 是由 *** 林传栩 陈月新 江益波 许俊旺 吴晓南 李航 申超龙 于 2019-09-06 设计创作，主要内容包括：本发明提供了一种辅助桩基钢筋笼下放的定位保护装置及施工方法,所述定位保护装置包括圆柱体垫块和固定用轴,所述圆柱体垫块的中心开设有通孔,所述固定用轴通过所述通孔贯穿所述圆柱体垫块,所述圆柱体垫块可绕所述固定用轴转动,所述固定用轴的两端用于与钢筋笼连接。所述定位保护装置结构简单、取材方便,易于操作安装,能够有效避免钢筋笼卡位及因焊接钢筋笼定位筋烧伤主筋而产生的质量问题,提高施工效率,节约施工成本。(The invention provides a positioning protection device for assisting in lowering a pile foundation reinforcement cage and a construction method. The positioning protection device is simple in structure, convenient to obtain materials, easy to operate and install, capable of effectively avoiding clamping of the steel reinforcement cage and quality problems caused by burning of the main reinforcement by welding the positioning reinforcement of the steel reinforcement cage, improving construction efficiency and saving construction cost.)

1. The utility model provides a location protection device that supplementary pile foundation steel reinforcement cage transferred, its characterized in that, location protection device includes cylinder cushion and fixed axle of using, the through-hole has been seted up at the center of cylinder cushion, fixed axle of using passes through the through-hole runs through the cylinder cushion, the cylinder cushion can wind fixed axle of using rotates, the both ends of fixed axle of using are used for being connected with the steel reinforcement cage.

2. The auxiliary pile foundation reinforcement cage lowering positioning protection device of claim 1, wherein the number of the cylinder blocks is two.

3. The auxiliary pile foundation reinforcement cage lowering positioning protection device of claim 2, wherein two of the cylinder blocks are connected by a connector.

4. The auxiliary pile foundation reinforcement cage lowering positioning protection device of claim 3, wherein the connector is a steel wire or an iron wire.

5. The auxiliary pile foundation reinforcement cage lowering positioning protection device of claim 1, wherein the radius of the cylindrical cushion block matches the thickness of the reinforcement cage protective layer, and the thickness of the reinforcement cage protective layer is the distance between the reinforcement cage and the hole wall.

6. The auxiliary pile foundation reinforcement cage lowering positioning protection device of claim 1, wherein the side surface of the cylindrical cushion block is provided with a protection layer.

7. The auxiliary pile foundation reinforcement cage lowering positioning protection device of claim 6, wherein the protective layer is made of iron sheet.

8. The auxiliary pile foundation reinforcement cage lowering positioning protection device according to claim 1, wherein the fixing shaft comprises a fixing shaft and two connecting parts;

the fixed shaft penetrates through the cylindrical cushion block through the through hole, the two connecting parts are arranged on two sides of the fixed shaft respectively, one ends of the two connecting parts are fixedly connected with two ends of the fixed shaft respectively, and the other ends of the two connecting parts are used for being connected with stirrups of the reinforcement cage.

9. The apparatus for securing the position of the auxiliary pile foundation reinforcement cage during the lowering of the same according to claim 1 or 8, wherein the fixing shaft is made of a steel bar.

10. A construction method for a positioning protection device for auxiliary pile foundation reinforcement cage lowering according to any one of claims 1 to 9, characterized in that the construction method comprises the following steps:

(1) construction preparation, namely forming pile holes in foundation soil and manufacturing the positioning protection device;

(2) fixedly connecting the positioning protection device to the reinforcement cage;

(3) vertically hoisting the reinforcement cage provided with the positioning protection device into the pile hole, positioning and fixing the reinforcement cage;

(4) and (5) pouring concrete, and finishing construction.

Technical Field

The invention relates to the technical field of pile foundation reinforcement cage installation and concrete pouring construction, in particular to a positioning protection device for assisting the pile foundation reinforcement cage in being lowered and a construction method.

Background

With the deep promotion of the infrastructure construction of China, the cast-in-situ bored pile is widely applied to the construction of bridges or high-rise buildings. The cast-in-situ bored pile is formed by drilling holes on the designed pile position on the original ground, and specifically, forming pile holes in foundation soil by means of mechanical drilling or soil extrusion through steel pipes and the like on the engineering site.

Bored concrete pile belongs to underground works, and the protective layer cushion can't be placed after the steel reinforcement cage installation is accomplished, generally adopts ligature precast concrete square as the protective layer cushion before the steel reinforcement cage installation at present, perhaps welds the effect that the reinforcing bar of buckling plays the protective layer cushion on steel reinforcement cage owner muscle. The bound concrete blocks are easy to fall off from the cushion blocks of the protective layer due to shaking in the process of lowering the concrete reinforcement cage, and the corresponding protective effect cannot be achieved; and the mode of welding the bent reinforcing steel bars can cause damage to the main reinforcing steel bars due to welding.

In addition, the protective layer cushion block in a traditional mode is adopted, the protective layer cushion block directly rubs with the hole wall of a pile hole in the process of installing the steel reinforcement cage, the hole wall is damaged, the steel reinforcement cage is clamped and cannot be placed according to requirements, and other adverse effects are caused, and the engineering quality is affected.

Disclosure of Invention

The invention aims to provide a positioning protection device for assisting the downward placement of a pile foundation reinforcement cage and a construction method, and aims to solve the problems that in the prior art, the construction process and the construction quality are influenced due to the phenomenon that a hole wall, the wall hanging of the reinforcement cage and deviation are damaged in the reinforcement cage installation process and the phenomenon that ribs are leaked after concrete is poured.

In order to solve the technical problem, the invention provides a positioning protection device for assisting in lowering a reinforcement cage of a pile foundation, which comprises a cylindrical cushion block and a fixing shaft, wherein a through hole is formed in the center of the cylindrical cushion block, the fixing shaft penetrates through the cylindrical cushion block through the through hole, the cylindrical cushion block can rotate around the fixing shaft, and two ends of the fixing shaft are used for being connected with the reinforcement cage.

Preferably, the number of the cylindrical cushion blocks is two.

Preferably, the two cylindrical cushion blocks are connected through a connector.

Preferably, the connector is a steel wire or an iron wire.

Preferably, the radius of the cylindrical cushion block is matched with the thickness of the steel reinforcement cage protective layer, and the thickness of the steel reinforcement cage protective layer is the distance between the steel reinforcement cage and the hole wall.

Preferably, a protective layer is arranged on the side surface of the cylindrical cushion block.

Preferably, the protective layer is made of iron sheet.

Preferably, the fixing shaft comprises a fixing shaft and two connecting parts, the fixing shaft penetrates through the cylindrical cushion block through the through hole, the two connecting parts are arranged on two sides of the fixing shaft respectively, one ends of the two connecting parts are fixedly connected with two ends of the fixing shaft respectively, and the other ends of the two connecting parts are used for being connected with stirrups of the reinforcement cage.

Preferably, the fixing shaft is made of a steel bar.

The invention also provides a construction method of the positioning protection device for assisting the lowering of the pile foundation reinforcement cage, which comprises the following steps:

(1) construction preparation, namely forming pile holes in foundation soil and manufacturing the positioning protection device;

(2) fixedly connecting the positioning protection device to the reinforcement cage;

(3) vertically hoisting the reinforcement cage provided with the positioning protection device into the pile hole, positioning and fixing the reinforcement cage;

(4) and (5) pouring concrete, and finishing construction.

The positioning protection device for assisting the lowering of the pile foundation reinforcement cage and the construction method have the following beneficial effects:

the positioning protection device comprises a cylindrical cushion block and a fixing shaft, a through hole is formed in the center of the cylindrical cushion block, the fixing shaft penetrates through the cylindrical cushion block through the through hole, the cylindrical cushion block can rotate around the fixing shaft, and two ends of the fixing shaft are used for being connected with a reinforcement cage. The positioning protection device is simple in structure, convenient to obtain materials, easy to operate and install, capable of effectively avoiding quality problems caused by steel reinforcement cage clamping and welding of steel reinforcement cage positioning ribs due to burning of the main ribs, capable of improving construction efficiency and saving construction cost.

Drawings

Fig. 1 is a schematic structural view of a positioning protection device for assisting in lowering a reinforcement cage of a pile foundation according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a positioning protection device for assisting in lowering a reinforcement cage of a pile foundation according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of the cylinder block of the positioning protection device for assisting in lowering the reinforcement cage of the pile foundation according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the fixing shaft of the positioning and protecting device for assisting in lowering the reinforcement cage of the pile foundation according to an embodiment of the present invention;

fig. 5 is a schematic use view of a positioning protection device for assisting in lowering a reinforcement cage of a pile foundation according to an embodiment of the present invention;

wherein the reference numerals of figures 1 to 5 are as follows:

1-positioning a protection device; 1-1-cylinder cushion block; 1-2-protective layer; 1-3-linker; 1-4-fixing shaft; 1-41-fixed shaft; 1-42-linker; 2-a reinforcement cage; 2-1-main reinforcement; 2-2-reinforcing ribs; 2-3-stirrup.

Detailed Description

The following provides a positioning protection device for assisting in lowering a reinforcement cage of a pile foundation and a construction method thereof, which are described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a positioning protection device for assisting in lowering a reinforcement cage of a pile foundation according to this embodiment; fig. 2 is a sectional view of a positioning protection device for assisting in lowering a reinforcement cage of a pile foundation according to the embodiment.

The positioning protection device 1 comprises a cylindrical cushion block 1-1 and a fixing shaft 1-4, a through hole is formed in the center of the cylindrical cushion block 1-1, the fixing shaft 1-4 penetrates through the cylindrical cushion block 1-1 through the through hole, the cylindrical cushion block 1-1 can rotate around the fixing shaft 1-4, and two ends of the fixing shaft 1-4 are used for being connected with a reinforcement cage 2. It should be noted that the connection mode of the fixing shafts 1 to 4 and the reinforcement cage 2 is not limited, and welding or other connection modes such as a buckle may be adopted.

The radius of the cylindrical cushion block 1-1 is matched with the thickness of a steel reinforcement cage protective layer, and the thickness of the steel reinforcement cage protective layer is the distance between the steel reinforcement cage 2 and the hole wall. Therefore, the cylindrical cushion block 1-1 can roll downwards along the hole wall to assist the steel reinforcement cage 2 to be placed, and meanwhile, enough distance can be ensured between the steel reinforcement cage 2 and the hole wall, so that the problem that the steel reinforcement cage is clamped due to wall hanging and deviation in the installation process of the steel reinforcement cage 2 and direct friction of the hole wall can be effectively solved.

Preferably, the number of the cylindrical spacers 1-1 is two. Specifically, the two cylindrical cushion blocks 1-1 are formed by pouring concrete, so that the contact area between the positioning protection device 1 and the hole wall can be increased by the two cylindrical cushion blocks 1-1 under the condition that the concrete consumption is not increased, the stress area of the hole wall is increased, and the hole wall is protected from being damaged.

Further, the two cylindrical cushion blocks are connected through the connectors 1-3, and specifically, the connectors 1-3 are preset between the two cylindrical cushion blocks 1-1 before pouring, so that the two cylindrical cushion blocks 1-1 are more conveniently connected, and the two cylindrical cushion blocks 1-1 are more firmly connected. Preferably, the connectors 1-3 are steel wires or iron wires, and the iron wires or the steel wires are low in price and high in strength.

Referring to fig. 1 and 3, fig. 3 is a cross-sectional view of the cylindrical block 1-1 of the positioning protection device 1 for assisting in lowering of a pile foundation reinforcement cage according to the embodiment.

And a protective layer 1-2 is arranged on the side surface of the cylindrical cushion block 1-1. Preferably, the side surface of the cylindrical cushion block 1-1 is wrapped with a layer of iron sheet so as to reduce the friction between the cylindrical cushion block 1-1 and the hole wall when the reinforcement cage 2 is placed downwards, avoid causing the damage of the hole wall, and simultaneously protect the cylindrical cushion block 1-1 from being worn.

Referring to fig. 4 and 5, fig. 4 is a schematic structural view of the fixing shaft of the positioning and protecting device for assisting in lowering of a pile foundation reinforcement cage according to the present embodiment; fig. 5 is a schematic use view of the positioning protection device for assisting in lowering the reinforcement cage of the pile foundation provided by the embodiment.

The fixing shaft 1-4 includes a fixing shaft 1-41 and two connecting parts 1-42.

Specifically, the fixing shaft 1-41 penetrates through the cylindrical cushion block 1-1 through the through hole, the two connecting parts 1-42 are respectively arranged on two sides of the fixing shaft 1-41, one ends of the two connecting parts 1-42 are respectively fixedly connected with two ends of the fixing shaft 1-41, and the other ends of the two connecting parts 1-42 are used for being connected with stirrups 2-3 of the reinforcement cage 2.

Preferably, the fixing shaft 1-4 is made of a steel bar, specifically, the fixing shaft 1-4 is obtained by bending a steel bar twice to obtain the shape, at the moment, the fixing shaft 1-4 is a bevel steel bar, two ends of the bevel steel bar are respectively welded with two stirrups 2-3 adjacent to the reinforcement cage 2 in the vertical direction, the fixing shaft is used for fixing the positioning protection device 1 on the reinforcement cage and limiting the cylinder cushion block 1-1, meanwhile, the fixing effect of the stirrups 2-3 is increased to a certain extent, and the quality problem caused by cushion block falling in the installation process of the reinforcement cage 2 can be effectively solved.

The location protection device 1 simple manufacture that supplementary pile foundation steel reinforcement cage transferred that this embodiment provided can utilize concrete, steel wire or iron wire, iron sheet, reinforcing bar clout of job site to make processing, can carry out abundant recycle to the waste material, is favorable to practicing thrift the cost, environmental protection.

In practical application, the positioning protection device 1 is mainly applied to a pile foundation reinforcement cage 2, the reinforcement cage 2 includes a main reinforcement 2-1, a reinforcing rib 2-2 and a stirrup 2-3 surrounding the reinforcement cage, in implementation, the positioning protection device 1 is preferably fixed on the stirrup 2-3 by welding, a plurality of positioning protection devices 1 are arranged on the same plane of the reinforcement cage 2, for example, 4 positioning protection devices 1 are arranged on the same plane of the reinforcement cage 2, and 4 positioning protection devices 1 are arranged on the same plane of the reinforcement cage 2 at fixed intervals in the vertical direction of the reinforcement cage 2, because the radius of the cylindrical cushion block 1-1 is matched with the thickness of the reinforcement cage protective layer, the cylindrical cushion block 1-1 can roll downwards along the hole wall to assist the lowering of the reinforcement cage 2, meanwhile, the steel reinforcement cage 2 can be ensured to have enough distance with the hole wall, and the problem that the steel reinforcement cage is clamped due to direct friction of the hole wall caused by wall hanging and deviation in the installation process of the steel reinforcement cage 2 can be effectively solved.

In addition, the invention also provides a construction method based on the positioning protection device for assisting the steel reinforcement cage to be lowered, and the construction method comprises the following steps:

(1) and (3) preparing construction, namely forming pile holes in foundation soil and manufacturing the positioning protection device 1.

Specifically, a pile hole is formed in foundation soil through mechanical drilling or steel pipe soil extrusion and other means on the engineering site, and the pile hole is cleaned in time, so that the phenomenon that slurry is deposited to cause collapse of the pile hole due to overlong time intervals is avoided. And processing and manufacturing the positioning protection device 1 by utilizing concrete, steel wires or iron wires, iron sheets and excess reinforcing steel bars on a construction site.

(2) And fixedly connecting the positioning protection device 1 to the reinforcement cage 2.

Specifically, two ends of the fixing shaft 1-4 are respectively welded to two stirrups 2-3 adjacent to each other in the vertical direction of the reinforcement cage 2, a plurality of (e.g., 4) positioning protection devices 1 are arranged on the same plane of the reinforcement cage 2, and a plurality of (e.g., 4) positioning protection devices 1 are arranged on the same plane of the reinforcement cage 2 at fixed intervals in the vertical direction of the reinforcement cage 2.

(3) And vertically hoisting the reinforcement cage 2 provided with the positioning protection device 1 into the pile hole, positioning and fixing the reinforcement cage 2.

(4) And (5) pouring concrete, and finishing construction.

In summary, the positioning protection device and the construction method for assisting the lowering of the pile foundation reinforcement cage provided by the invention have the following advantages: the positioning protection device comprises a cylindrical cushion block and a fixing shaft, a through hole is formed in the center of the cylindrical cushion block, the fixing shaft penetrates through the cylindrical cushion block through the through hole, the cylindrical cushion block can rotate around the fixing shaft, and two ends of the fixing shaft are used for being connected with a reinforcement cage. The positioning protection device is simple in structure, convenient to obtain materials, easy to operate and install, capable of effectively avoiding quality problems caused by steel reinforcement cage clamping and welding of steel reinforcement cage positioning ribs due to burning of the main ribs, capable of improving construction efficiency and saving construction cost.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.