Device and method for pre-treatment of super-cast concrete of underwater cast-in-situ bored pile
阅读说明：本技术 一种水下钻孔灌注桩超灌混凝土提前处理的装置及方法 (Device and method for pre-treatment of super-cast concrete of underwater cast-in-situ bored pile ) 是由 陈建 王兵 杨世鹏 刘卫强 王佳宁 李媛 王妍 于 2019-10-24 设计创作，主要内容包括：本发明公开了一种水下钻孔灌注桩超灌混凝土提前处理的装置及方法,所述装置包括筒体,所述筒体的横截面为矩形,所述筒体的底端与底面焊接,所述底面上设有若干矩形槽,所述矩形槽的一侧通过合页与钢片连接。本发明的水下钻孔灌注桩超灌混凝土提前处理的装置及方法实现了在混凝土终凝前凿除混凝土桩的桩头,无需采用人工凿桩头及大型凿除机的凿桩头作业,施工风险小；凿除桩头的施工作业时间短,不会影响施工工期,无对钢筋的二次扰动。(The invention discloses a device and a method for pre-treatment of super-cast concrete of an underwater cast-in-situ bored pile. The device and the method for treating the underwater cast-in-situ pile and the super-cast concrete realize chiseling the pile head of the concrete pile before final setting of the concrete, do not need manual chiseling the pile head and chiseling the pile head of a large chiseling machine, and have small construction risk; the construction operation time for chiseling the pile head is short, the construction period is not influenced, and secondary disturbance to the reinforcing steel bars is avoided.)
1. The utility model provides a device of processing before super-filled concrete of bored concrete pile under water is carried which characterized in that, includes barrel (1), the cross section of barrel (1) is the rectangle, the bottom and bottom surface (2) welding of barrel (1), be equipped with a plurality of rectangular channels (3) on bottom surface (2), hinge (4) and steel sheet (5) are passed through to one side of rectangular channel (3) are connected.
2. The device for treating the underwater cast-in-situ pile super-cast-in-place concrete before the concrete is poured according to claim 1, wherein the steel sheet (5) is rectangular, and the length of the steel sheet (5) is greater than the width of the rectangular groove (3).
3. The device for treating the underwater cast-in-situ pile and the super-cast-in-situ concrete according to claim 1 is characterized in that the outer side of the top end of the cylinder body (1) is welded with a lifting lug (6), and the outer side of the bottom end of the cylinder body (1) is welded with a pouring auxiliary device (7).
4. The device for treating the underwater cast-in-situ pile super-cast-in-place concrete before lifting according to claim 3, wherein through holes are formed in the middle of the lifting lug (6) and the middle of the dumping auxiliary device (7).
5. The device for treating the underwater cast-in-situ bored pile super-cast concrete before extraction according to claim 1, wherein an opening angle limiter (8) is arranged on the inner side of the bottom of the cylinder (1), and two ends of the opening angle limiter (8) are connected with the inner wall of the cylinder (1).
6. The device for treating the underwater cast-in-situ pile super-cast-in-place concrete before lifting according to claim 5, characterized in that the opening angle limiter (8) is a steel bar, the opening angle limiter (8) is positioned right above the rotating shaft of the hinge (4), and the distance between the opening angle limiter (8) and the hinge (4) is smaller than the length of the steel sheet (5).
7. The method for treating the underwater cast-in-situ bored pile super-cast concrete by using the device of claim 1, wherein the method comprises the following steps:
(1) after the concrete of the pile body is poured, immediately hoisting the device for the pre-treatment of the pre-pouring concrete of the underwater cast-in-situ pile into the pile hole, and controlling the hoisting elevation position in the hoisting process to ensure that the bottom of the device for the pre-treatment of the pre-pouring concrete of the underwater cast-in-situ pile is;
(2) after the bottom of the device for the pre-treatment of the underwater cast-in-situ pile pre-treatment of the concrete pre-treatment is flush with the elevation of the pile top, quickly lifting out the device for the pre-treatment of the underwater cast-in-situ pile pre-treatment of the concrete pre-treatment, and pouring out the concrete in the device for the pre-treatment of the underwater cast-in-situ pile pre-treatment of the concrete pre-treatment by utilizing the cooperation of a pouring auxiliary device and lifting equipment;
(3) and (3) repeating the step (1) and the step (2) until the concrete with the top of 50mm above is completely lifted out.
8. The method for treating the underwater cast-in-situ pile super-cast-in-place concrete as claimed in claim 7, wherein the hoisting in step (1) is assisted by a vibration measure.
Technical Field
The invention relates to the technical field of concrete pouring, in particular to a device and a method for pre-treatment of super-poured concrete of an underwater cast-in-situ bored pile.
Background
The underwater cast-in-situ bored pile generally has the height of over-cast concrete not less than 0.5 m for ensuring the quality of the cast concrete, and the over-cast concrete is chiseled off at the later stage.
The traditional treatment method of the super-poured concrete comprises the following steps: after the concrete pile body is completely poured, the earthwork is excavated to the substrate, and the super-poured concrete is broken and removed manually and mechanically. This treatment method has certain drawbacks: 1) because the concrete reaches a certain strength, the later-period breaking difficulty is increased, the labor and mechanical cost is increased, and the construction safety risk is increased; 2) the breaking and removing noise of the super-poured concrete is large, and simultaneously, a large amount of dust is generated in the breaking and removing process, so that noise is generated to the environment and the atmospheric environment is polluted; 3) the super-poured concrete is broken into a key process, so that the construction period of the project is prolonged; 4): the anchoring steel bars reserved on the upper part of the pile head influence the breaking operation, so that the steel bars are distorted and deformed in the breaking process, and need to be straightened in the later period, thereby increasing the construction period cost and influencing the mechanical property of the steel bars; 5) the sleeve is reserved in advance at the position of the pile head where the steel bar is reserved, and the process of mechanically pulling the pile head is adopted, so that the main steel bar of the steel bar cage is extremely easy to break due to the fact that the angles of the steel bar cage in processing, hanging and pulling the pile head are difficult to control.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a device and a method for pre-treatment of super-cast concrete of an underwater cast-in-situ bored pile, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a device for treating underwater cast-in-situ bored pile super-cast concrete before extraction,
the device comprises a barrel body, wherein the cross section of the barrel body is rectangular, the bottom end of the barrel body is welded with the bottom surface, a plurality of rectangular grooves are formed in the bottom surface, and one side of each rectangular groove is connected with a steel sheet through a hinge.
Further, the steel sheet is rectangular, and the length of the steel sheet is greater than the width of the rectangular groove.
Further, the top outside of barrel is with the lug welding, the bottom outside of barrel with empty auxiliary device welding.
Furthermore, the middle parts of the lifting lugs and the middle part of the dumping auxiliary device are provided with through holes.
Furthermore, an opening angle limiter is arranged on the inner side of the bottom of the barrel, and two ends of the opening angle limiter are connected with the inner wall of the barrel.
Furthermore, the opening angle limiter is a steel bar and is located right above the hinge rotating shaft, and the distance between the opening angle limiter and the hinge is smaller than the length of the steel sheet.
According to another aspect of the present invention, there is provided a method for pre-treatment of super-grouted concrete of an underwater cast-in-situ bored pile, the method comprising the steps of:
(1) after the concrete of the pile body is poured, immediately hoisting the device for the pre-treatment of the super-pouring concrete of the underwater cast-in-situ bored pile into the pile hole, controlling the hoisting elevation position in the hoisting process, ensuring that the bottom of the device is flush with the designed pile top elevation, and assisting with a vibration measure if necessary, wherein the super-pouring concrete enters the device along the opened steel sheet gap in the hoisting process;
(2) after the bottom of the device for the pre-treatment of the underwater cast-in-situ pile pre-treatment of the concrete pre-treatment is flush with the elevation of the pile top, the device for the pre-treatment of the underwater cast-in-situ pile pre-treatment of the concrete is quickly lifted out, and at the moment, the openable steel sheet is automatically closed, so that the concrete in the device is lifted to the ground; pouring out the concrete in the device before the underwater cast-in-situ bored pile concrete is subjected to concrete pre-treatment by utilizing the cooperation of the pouring auxiliary device and the lifting equipment;
(3) and (3) repeating the step (1) and the step (2) until the concrete with the height of more than 50mm on the top of the pile is completely lifted out, and removing the residual concrete with the height of 50mm in the later construction joint roughening treatment process.
The invention has the beneficial effects that: the device and the method for treating the underwater cast-in-situ pile with the super-cast concrete realize chiseling the pile head of the concrete pile before final setting of the concrete, do not need to adopt manual chiseling pile heads and chiseling pile head operation of a large chiseling machine, have small construction risk, and avoid noise pollution and environmental pollution caused by the fact that reinforcing steel bars of the pile head and the concrete are chiseled manually and mechanically in the traditional method and deformation of residual reinforcing steel bars caused by the fact that the anchor reinforcing steel bars are reserved in the chiseling pile head; the construction operation time for chiseling the pile head is short, and the construction period is not influenced; and no secondary disturbance to the reinforcing steel bars exists, and the problem that the main reinforcing steel bars of the pile body are easy to damage in the traditional concrete chiseling construction method is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for pre-treatment of super-grouted concrete of an underwater cast-in-situ pile according to an embodiment of the present invention;
FIG. 2 is a bottom view of the apparatus for pre-treatment of super-grouted concrete of an underwater cast-in-situ pile according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic structural view of a lifting lug according to an embodiment of the invention;
FIG. 5 is a schematic structural view of a steel sheet according to an embodiment of the present invention;
in the figure: 1. the device comprises a cylinder body, 2, a bottom surface, 3, a rectangular groove, 4, a hinge, 5, a steel sheet, 6, a lifting lug, 7, a dumping auxiliary device, 8 and an opening angle limiter.
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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
(1) Device design for pre-treatment of super-cast concrete of underwater cast-in-situ bored pile
Taking a cast-in-place pile with the diameter of 800mm as an example, the protective layer of a stressed steel bar of a pile body is 50mm, the diameter of a main bar is 16mm, the diameter of a reinforcing stirrup is 20mm, a rectangular cylindrical device with the cross section size of 420mm multiplied by 420mm and the length of 1m needs to be processed, and the bottom of the rectangular cylindrical device is provided with a plurality of latticed steel sheets (the opening angle is less than 90 degrees) which can be opened and closed upwards and are about 50mm multiplied by.
(2) Device processing of underwater cast-in-situ bored pile super-cast concrete pretreatment
Cutting the steel plate by using a plasma cutting machine, cutting the steel bar by using a toothless saw, and simultaneously performing operations such as punching on the lifting lug and the dumping auxiliary device; and then welding and assembling, wherein the assembling sequence is steel sheet installation which can be opened upwards → opening angle limiter installation → device installation before the underwater cast-in-situ bored pile super-cast concrete extraction → lifting lug and dumping auxiliary device installation.
The device for treating the pre-treatment of the super-grouting concrete of the processed underwater cast-in-situ pile is shown in figures 1-5 and comprises a
In one embodiment of the invention, the upwards 57mm of the bottom in the
The method for treating the super-cast concrete of the underwater cast-in-situ bored pile by using the device is a method which is provided by using the fluid performance before the concrete is solidified, and replaces the method of chiseling after the concrete is solidified in the prior art. The method comprises the following steps:
(1) after the concrete of the pile body is poured, immediately hoisting the device for the pre-treatment of the super-pouring concrete of the underwater cast-in-situ bored pile into the pile hole, controlling the hoisting elevation position in the hoisting process, ensuring that the bottom of the device is flush with the designed pile top elevation, and assisting with a vibration measure if necessary, wherein the super-pouring concrete enters the device along the opened steel sheet gap in the hoisting process;
(2) after the bottom of the device for the pre-treatment of the underwater cast-in-situ pile pre-treatment of the concrete pre-treatment is flush with the elevation of the pile top, the device for the pre-treatment of the underwater cast-in-situ pile pre-treatment of the concrete is quickly lifted out, and at the moment, the openable steel sheet is automatically closed, so that the concrete in the device is lifted to the ground; pouring out the concrete in the device before the underwater cast-in-situ bored pile concrete is subjected to concrete pre-treatment by utilizing the cooperation of the pouring auxiliary device and the lifting equipment;
(3) and (3) repeating the step (1) and the step (2) until the concrete with the height of more than 50mm on the top of the pile is completely lifted out, and removing the residual concrete with the height of 50mm in the later construction joint roughening treatment process.
In conclusion, by means of the technical scheme, the pile head of the concrete pile is chiseled before the concrete is finally set, the pile head chiseling operation of a manual pile head chiseling machine and a large-sized chiseling machine is not needed, the construction risk is low, and the noise pollution and the environmental pollution caused by the fact that the pile head reinforcing steel bars and the concrete are chiseled manually and mechanically in the traditional method and the remaining reinforcing steel bars are deformed due to the fact that the pile head reserved anchoring reinforcing steel bars are chiseled are avoided; the construction operation time for chiseling the pile head is short, and the construction period is not influenced; and no secondary disturbance to the reinforcing steel bars exists, and the problem that the main reinforcing steel bars of the pile body are easy to damage in the traditional concrete chiseling construction method is solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
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