A pre-insertion method steel pipe column posture adjusting platform and method

Abstract

A first insertion method steel pipe column posture adjusting platform and method, the first insertion method steel pipe column posture adjusting platform includes support column, first operation platform, second operation platform and guide column, the middle part of first operation platform is opened, the four sides of the hole are provided with horizontal jack, two two opposite settings, the middle part of second operation platform is opened, the four sides of the hole are provided with vertical jack, two two opposite settings, the middle hole of first operation platform, second operation platform is placed guide column, the lower part of the outer wall of guide column is equidistant two two opposite settings four supporting plates, the outer wall of guide column is provided with two inclination sensors on the same vertical axis, the lower end is supported on the bottom of supporting plate, the outer wall of guide column is supported on the upper part of horizontal jack.This application also includes a first insertion method steel pipe column posture adjusting method.This application is not affected by the length of steel pipe and the underground water level in the hole, the posture of steel pipe in underground pile hole can be controlled on the ground, the elevation fine adjustment and perpendicularity adjustment correction can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of supporting column construction of foundation pit engineering reverse construction method, and particularly relates to a first insertion method steel pipe column posture adjustment platform and method. BACKGROUND

[0002] In recent years, super high-rise buildings have emerged, and deep foundation pits have become larger and deeper, and foundation pit engineering reverse construction method is more and more used. The reverse construction method ensures the safety of foundation pit construction while shortening the construction period. According to the construction principle of "first column, then support", the steel pipe column is operated by "first insertion method". The ground pile hole is formed, the steel pipe column is hoisted and temporarily suspended and fixed to make the column bottom not fall to the ground, the bottom foundation and the steel pipe column inner concrete are poured, and the steel pipe column outer gravel is backfilled.

[0003] In the reverse construction method of foundation pit engineering, the steel pipe column is the vertical component of the supporting structure of the foundation pit as the vertical component of the supporting structure of the foundation pit, and the verticality deviation control requirement is higher and higher, which is the key to ensure the safety of the foundation pit. The existing verticality control method of the steel pipe column mainly includes two types. One is to control by the self-weight of the steel pipe during the lowering process, and the other is to install an adjuster in the pile hole. However, with the increase of the length of the steel pipe column, the traditional method cannot achieve the design accuracy, and the adjuster is mostly not reusable due to the limitation of the underground water level in the hole. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the deficiencies in the prior art and provide a first insertion method steel pipe column posture adjustment platform and method which can control the steel pipe pile in the underground pile hole above the ground, has strong adaptability to the site environment, and is reusable without being affected by the length of the steel pipe and the underground water level in the hole.

[0005] The technical solution adopted by the present application to solve the technical problem is:

[0006] A first insertion method steel pipe column posture adjustment platform, comprising a supporting column, a first operation platform, a second operation platform and a guide column, the upper part of the supporting column is connected with the first operation platform, the lower part of the supporting column is connected with the second operation platform, the middle part of the first operation platform is provided with a hole, the four sides of the hole are provided with horizontal jacks which are arranged in pairs and opposite to each other, the middle part of the second operation platform is provided with a hole, the vicinity of the four sides of the hole is provided with vertical jacks which are arranged in pairs and opposite to each other, the guide column is placed in the middle hole of the first operation platform and the second operation platform, four supporting plates are arranged at equal distances and in pairs and opposite to each other on the outer wall of the lower part of the guide column, two inclination sensors are arranged on the same vertical axis and at the upper and lower ends of the outer wall of the guide column, the vertical jacks are supported on the bottom of the supporting plates, and the horizontal jacks are supported on the outer wall of the upper part of the guide column.

[0007] Further, the cross section of the supporting column is L-shaped. Of course, other forms of supporting columns can also be used.

[0008] Further, the top surface of the support column is higher than the first work platform, the support column stands on the site ground and the bottom surface is lower than the second work platform, the second work platform is kept away from the site ground to adapt to the site ground terrain undulation.

[0009] Further, the work guardrail is installed between the support columns above the first work platform, the work guardrail is composed of steel pipe connection and guarantees the safety of the high-altitude worker.

[0010] Further, the first work platform and the second work platform are both composed of channel steel beams and steel plates, the channel steel beams are covered with steel plates to meet the standing construction of the worker.

[0011] Further, the middle part of the first work platform and the second work platform is provided with a square hole, a guide column is centrally arranged in the square hole and the center of the guide column is determined through the center positioning of the square hole.

[0012] Further, the longitudinal section of the supporting plate is triangular. Of course, other forms of supporting plates can also be used.

[0013] A first-inserting method for adjusting the posture of a steel pipe column comprises the following processes:

[0014] Before use, the entire adjusting platform is hung and placed, the hole centers of the first work platform and the second work platform are overlapped with the center of the underground pile hole; during use, the steel pipe column is first welded to the lower surface of the guide column, wherein the guide column is concentric and coaxial with the steel pipe column; then the guide column and the steel pipe column are hoisted, the steel pipe column is made to enter the underground pile hole, and the four supporting plates welded to the lower outer wall of the guide column are placed on the vertical jacks of the second work platform;

[0015] During the adjustment process of the posture of the steel pipe column, the X and Y axis accurate offset values and offset directions of the guide column and the steel pipe column are obtained through two inclination sensors arranged on the same vertical axis at the upper and lower ends of the outer wall of the guide column; firstly, the X axis perpendicularity is adjusted, two vertical jacks and two horizontal jacks in the Y axis plane are utilized to realize the adjustment, the highest one of the two vertical jacks in the Y axis plane is taken as a rotating fulcrum, the horizontal jacks diagonally opposite to the rotating fulcrum are simultaneously jacked up, the opposite horizontal jacks are retracted, the inclination sensor data shows that the X axis is perpendicular, then the lowest vertical jack in the Y axis plane is jacked up to be flush with the highest vertical jack, and the X axis perpendicularity adjustment is completed; the Y axis adjustment mode is consistent with the X axis, finally, the X axis and the Y axis of the steel pipe column are both adjusted to the perpendicular state;

[0016] In addition, after the steel pipe column is adjusted to the perpendicular state, the four vertical jacks are simultaneously jacked up to realize the fine adjustment of the elevation of the steel pipe column.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The posture adjustment platform for the first inserted steel pipe column is simple in structure and reusable, can be integrally and quickly positioned, hoisted and fixed, the adjustment accuracy is not affected by the length of the steel pipe and the underground water level in the hole, after the adjustment data is obtained by the inclination sensor, the steel pipe column posture in the underground pile hole can be controlled on the ground by the jacking or retraction of the horizontal jack and the vertical jack on the operation platform, the elevation fine adjustment and the verticality adjustment and correction can be realized, the verticality deviation can meet the design requirements, and meanwhile, the platform can also adjust the steel pipe column posture when the ground terrain fluctuates. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the embodiment of the present application;

[0020] Figure 2 It is a cross section structure schematic view of the embodiment of the present application;

[0021] Figure 3 It is a first operation platform structure schematic view of the embodiment of the present application;

[0022] Figure 4 It is a second operation platform structure schematic view of the embodiment of the present application;

[0023] In the drawing: 1 is a steel pipe column, 2 is a guide column, 3 is a first operation platform, 4 is a second operation platform, 5 is a support column, 6 is a supporting plate, 7 is a vertical jack, 8 is a horizontal jack, 9 is an inclination sensor, 10 is a channel steel beam, 11 is a steel plate, 12 is an operation guardrail, 13 is a steel pipe, 14 is a site ground, 15 is an underground pile hole. DETAILED DESCRIPTION

[0024] The present application will be further described below in combination with the drawings and embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0025] REFERENCE Figures 1-4, a first-insertion-method steel pipe column posture adjustment platform used in a support column construction in a foundation pit engineering top-down method, comprising a support column 5, a first working platform 3, a second working platform 4 and a guide column 2, the upper part of the support column 5 is connected with the first working platform 3, the lower part of the support column 5 is connected with the second working platform 4, the middle part of the first working platform 3 is provided with a hole, the four sides of the hole are provided with horizontal jacks 8, which are arranged in pairs and oppositely, the middle part of the second working platform 4 is provided with a hole, the four sides of the hole are provided with vertical jacks 7, which are arranged in pairs and oppositely, the middle hole of the first working platform 3 and the second working platform 4 is placed with the guide column 2, the lower outer wall of the guide column 2 is equidistantly and oppositely provided with four supporting plates 6, the outer wall of the guide column 2 is provided with two inclination sensors 9 on the same vertical axis and at the upper and lower ends, the vertical jacks 7 are supported on the bottom of the supporting plates 6, and the horizontal jacks 8 are supported on the upper outer wall of the guide column 2.

[0026] In the embodiment, the cross section of the support column 5 is L-shaped, the top surface of the support column 5 is higher than the first working platform 3, the support column 5 stands on the site ground 14 and the bottom surface is lower than the second working platform 4, and the second working platform 4 is kept away from the site ground 14 to adapt to the terrain undulation of the site ground 14.

[0027] In the embodiment, the first working platform 3 is provided with working guardrails 12 between the support columns 5, the working guardrails 12 are composed of steel pipes 13 connected together, and the safety of workers working at high places is ensured.

[0028] In the embodiment, the first working platform 3 and the second working platform 4 are both composed of a channel steel beam 10 and a steel plate 11, the steel plate 11 is covered on the channel steel beam 10, and the standing construction of workers is met.

[0029] In the embodiment, the middle part of the first working platform 3 and the second working platform 4 is provided with a square hole, and the guide column 2 is placed in the center of the square hole, and the center of the guide column 2 is determined through the center positioning of the square hole.

[0030] In the embodiment, the longitudinal section of the supporting plate is triangular.

[0031] A first-insertion-method steel pipe column posture adjustment method, comprising the following processes:

[0032] Before use, the whole adjustment platform is hoisted and placed, and the hole centers of the first working platform 3 and the second working platform 4 are overlapped with the center of the underground pile hole 15; during use, the steel pipe column 1 is welded to the lower surface of the guide column 2, wherein the guide column 2 is concentric and coaxial with the steel pipe column 1; then the guide column 2 and the steel pipe column 1 are hoisted, so that the steel pipe column 1 enters the underground pile hole 15, and the four supporting plates 6 welded to the lower outer wall of the guide column 2 are placed on the vertical jacks 7 of the second working platform 4;

[0033] During the posture adjustment process of the steel pipe column 1, two inclination sensors 9 arranged on the upper and lower ends of the same vertical axis of the outer wall of the guide column 2 are used to obtain the accurate offset value and offset direction of the X and Y axes of the guide column 2 and the steel pipe column 1; first, the X-axis perpendicularity is adjusted, two vertical jacks 7 and two horizontal jacks 8 in the Y-axis plane are used to realize the adjustment, the highest one of the two vertical jacks 7 in the Y-axis plane is used as a rotating fulcrum, the horizontal jack 8 diagonally opposite to the rotating fulcrum is lifted, the opposite horizontal jack 8 is retracted, and the inclination sensor data shows that the X-axis is perpendicular, then the lowest vertical jack 7 in the Y-axis plane is lifted to be flush with the highest vertical jack 7, and the X-axis perpendicularity adjustment is completed; the Y-axis adjustment mode is the same as that of the X-axis, and finally the X and Y axes of the steel pipe column 1 are adjusted to be perpendicular.

[0034] In addition, after the steel pipe column 1 is adjusted to be perpendicular, the four vertical jacks 7 are used to synchronously lift the guide column 2, so that the elevation fine adjustment of the steel pipe column 1 can be realized.

[0035] The above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can make various alternative improvements and combinations on the foregoing specific embodiments, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for adjusting the posture of a pre-insertion steel pipe column, characterized in that: The adjustment platform used in this method includes a support column, a first working platform, a second working platform, and a guide column. The upper part of the support column is connected to the first working platform, and the lower part of the support column is connected to the second working platform. The first working platform has an opening in the middle, and horizontal jacks are provided on the four sides of the opening, arranged in pairs facing each other. The second working platform has an opening in the middle, and vertical jacks are provided near the four sides of the opening, arranged in pairs facing each other. The guide column is placed in the middle opening of the first and second working platforms. Four support plates are arranged at equal intervals in pairs facing each other on the lower outer wall of the guide column. Two tilt sensors are arranged at the upper and lower ends of the same vertical axis on the outer wall of the guide column. The vertical jacks are supported on the bottom of the support plates, and the horizontal jacks are supported on the upper outer wall of the guide column. This method Includes the following processes: Before use, hoist the entire adjustment platform and align the center of the holes of the first and second working platforms with the center of the underground pile hole. During use, first weld the steel pipe column to the lower surface of the guide column, wherein the guide column and the steel pipe column are concentric and coaxial. Then, lift the guide column and the steel pipe column so that the steel pipe column enters the underground pile hole, while the four support plates welded to the lower outer wall of the guide column are placed on the vertical jacks of the second working platform. During the adjustment of the steel pipe column's posture, two tilt sensors installed at the upper and lower ends of the same vertical axis on the outer wall of the guide column are used to obtain the accurate X and Y axis offset values ​​and offset directions of the guide column and the steel pipe column. First, the verticality of the X axis is adjusted using two vertical jacks and two horizontal jacks in the Y-axis plane perpendicular to the X axis. The highest of the two vertical jacks in the Y-axis plane is used as the fulcrum for rotation. The horizontal jack diagonally opposite the fulcrum is raised in the Y-axis plane, while the opposite horizontal jack is retracted. After the tilt sensor data shows that the X axis is vertical, the lowest vertical jack in the Y-axis plane is raised to be level with the highest vertical jack, and the verticality of the X axis is adjusted. The Y-axis adjustment method is the same as the X-axis. Finally, both the X-axis and Y-axis of the steel pipe column are adjusted to a vertical state. In addition, after the steel pipe column is adjusted to a vertical position, the four vertical jacks can simultaneously lift the guide column to achieve a fine adjustment of the steel pipe column elevation.

2. The method for adjusting the posture of a pre-insertion steel pipe column according to claim 1, characterized in that: The cross-section of the supporting column is L-shaped.

3. The method for adjusting the posture of a pre-insertion steel pipe column according to claim 1 or 2, characterized in that: The top surface of the support column is higher than the first working platform, and the support column is placed on the ground and the bottom surface is lower than the second working platform.

4. The method for adjusting the posture of a pre-insertion steel pipe column according to claim 3, characterized in that: Work guardrails are installed between the supporting columns above the first work platform.

5. The method for adjusting the posture of a pre-insertion steel pipe column according to claim 1 or 2, characterized in that: Both the first and second work platforms are composed of channel steel beams and steel plates, with the channel steel beams covered by steel plates.

6. The method for adjusting the posture of a pre-insertion steel pipe column according to claim 1 or 2, characterized in that: The first and second work platforms have square holes in the middle, and a guide post is placed in the center of the square hole. The center of the guide post is determined by the center positioning of the square hole.

7. The method for adjusting the posture of a pre-insertion steel pipe column according to claim 1 or 2, characterized in that: The longitudinal section of the pallet is triangular.

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