CN-116517313-B - One-column one-pile prefabricated foundation self-leveling semi-automatic verticality adjusting method

CN116517313BCN 116517313 BCN116517313 BCN 116517313BCN-116517313-B

Abstract

The invention discloses a self-leveling semi-automatic verticality adjusting method for a one-column one-pile prefabricated foundation, which comprises the following steps: s1, drilling holes and placing a reinforcement cage; s2, manufacturing an integrated sagging adjusting disc; s3, placing an integrated sagging adjusting plate and leveling the sagging adjusting plate; s4, steel pipe column installation and verticality displacement control; s5, fine adjustment of the verticality of the steel pipe; s6, pouring concrete, namely after the steel pile casing is buried and fixed, leveling the hole site, directly lifting the verticality adjusting plate to the hole, carrying out self-leveling on the verticality adjusting plate through the verticality adjusting plate verticality adjusting system, lowering the steel pipe column after leveling, controlling the holding clamp on the adjusting rod on the verticality adjusting plate by receiving data fed back by the infrared inclinometer, and then realizing semi-automatic verticality adjustment of the steel pipe column by manually operating the adjusting rod, thereby improving verticality adjusting precision.

Inventors

CHEN GANG
Xiong Ruiming
XIAO HAN
WANG ZHENGFEI
CHU CHUNBO
CAI LEI
ZHAO SHUWEI

Assignees

中建八局第三建设有限公司

Dates

Publication Date: 20260505
Application Date: 20230529

Claims (3)

1. A self-leveling semi-automatic verticality adjusting method for a one-column one-pile prefabricated foundation is characterized by comprising the following steps: s1, drilling a hole, namely selecting a drilling machine to carry out hole forming operation according to construction working conditions, controlling the verticality of the hole to be less than 1/600, and carrying out procedures of sediment detection, hole cleaning and reinforcement cage lowering according to specifications and design requirements after the hole forming is completed; s2, manufacturing an integrated verticality adjusting disc, wherein the integrated verticality adjusting disc consists of a prefabricated foundation and a verticality adjusting disc, the levelness of the middle points of each side is summarized to a computer in real time, the computer controls the operation, and the verticality adjusting disc consists of a positioning frame, a correcting frame and 8 adjusting rods; s3, placing an integrated drop adjusting disc and leveling the drop adjusting disc, namely, carrying out preliminary leveling on the periphery of an orifice by using a field, placing the integrated drop adjusting disc on the orifice by using a crawler crane, controlling the center of the drop adjusting disc to be consistent with the axis of a pile position, carrying out drop adjusting disc leveling by using computer control after the drop adjusting disc is placed stably, and enabling each jack at four corners of a prefabricated foundation to respectively output lifting or descending instructions when each jack at two corners of the prefabricated foundation is controlled to be not in a horizontal state according to gyroscope transmission data installed at two adjacent sides, wherein when one jack receives two identical instructions, executing the instructions, and when two different instructions are all in the horizontal state, outputting locking instructions and locking 4 jacks; s4, installing an infrared inclinometer before hoisting the steel pipe column, and performing monitoring adjustment according to data measured by the infrared inclinometer; s5, fine adjustment of the verticality of the steel tube, namely reading displacement readings delta X and delta Y in the X and Y directions in real time through an infrared inclinometer, and then adjusting the verticality of the steel tube through 8 adjusting rods on an adjusting plate to improve the adjusting precision; S6, pouring concrete, namely after the verticality of the steel pipe column is adjusted, finishing secondary cleaning and pouring underwater concrete, and dismantling a verticality adjusting disc after one column and one pile are constructed; In the step S2, the whole prefabricated foundation is square, the size is the same as that of the positioning frame, the bottom is a 30mm thick steel plate, the middle is provided with a hole, the aperture is slightly larger than the diameter of the pile, the periphery of the prefabricated foundation is composed of four 20# I-steel beams, and four corners of the prefabricated foundation are respectively provided with a jack which is connected with universal spherical hinges at the four corners of the vertical adjustment plate; In the step S4, a double-machine lifting and hanging mode is adopted to lift the steel pipe column, the steel pipe is hung into a pile hole, a steel wire rope is used for positioning the steel pipe column, when the steel pipe column is placed to the design required elevation, the center position of the steel pipe column is fixed by using a hanging plate clamping plate, and the hanging of the steel pipe column is regulated by eight regulating rods on a hanging plate; In the step S5, the upper clamping plate of the adjusting rod can apply pressure along with the change of the displacement reading in the adjusting process, when the larger value in the absolute values of the displacement readings in two directions is more close to zero, the applied force is more great, when the reading is equal to zero, the clamping plate locks the adjusting rod, when the absolute value of the reading is more great, the clamping is more loose, and when an operator performs verticality adjustment, the tightness degree of the adjusting rod is combined according to the real-time reading of the infrared inclinometer.
2. The method for self-leveling and semi-automatic verticality adjustment of a prefabricated foundation of a column and a pile according to claim 1, wherein in step S3, when a jack stroke is finished and leveling is not completed, the remaining jacks are lowered synchronously until four sides are in horizontal positions.
3. The method for self-leveling semi-automatic verticality adjustment of a prefabricated foundation of a column and a pile according to claim 1, wherein in the step S1, no matter what type of pore-forming machinery is selected for pore-forming, a section of steel pile casing is buried for positioning, and 1:1 sand is used for compaction and tamping between the pile casing and a pore wall so as to increase the sidewall friction resistance of the pile casing.

Description

One-column one-pile prefabricated foundation self-leveling semi-automatic verticality adjusting method Technical Field The invention relates to the technical field of building construction, in particular to a one-column one-pile prefabricated foundation self-leveling semi-automatic verticality adjusting method. Background With the advancement of urban construction, more and more house construction projects start to develop underground space, and the reverse construction method is gradually popularized as a construction technology suitable for efficiently constructing the urban underground space, wherein one column and one pile are used as a key technology in the reverse construction method construction, one column and one pile are used as supporting structures and permanent structures, and the control of construction quality is self-evident. In the one-column one-pile construction process, the control requirement on the verticality of the steel pipe is very high, so that after the site is leveled and hardened before the steel pipe is lowered, a verticality adjusting disc is placed, and meanwhile, the verticality adjusting degree of the verticality adjusting disc has great influence on the verticality adjustment of the steel pipe column. The traditional construction method has complex procedures, has higher requirements on the operation level of constructors, is simple to operate and has higher mechanization degree, and certain guarantee is provided for the verticality adjustment precision. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides a one-column one-pile prefabricated foundation self-leveling semi-automatic verticality adjusting method, which comprises the following steps: S1, drilling a hole, namely selecting a drilling machine to carry out hole forming operation according to construction working conditions, controlling the verticality of the hole to be less than 1/600, and carrying out procedures of sediment detection, hole cleaning, reinforcement cage lowering and the like according to specifications and design requirements after the hole forming is completed; s2, manufacturing an integrated verticality adjusting disc, wherein the integrated verticality adjusting disc consists of a prefabricated foundation and a verticality adjusting disc, so that the levelness of the middle points of each side can be summarized to a computer in real time, and the computer can control the operation; s3, placing an integrated drop adjusting disc and leveling the drop adjusting disc, namely, carrying out preliminary leveling on the periphery of an orifice by using a field, placing the integrated drop adjusting disc on the orifice by using a crawler crane, controlling the center of the drop adjusting disc to be consistent with the axis of a pile position, carrying out drop adjusting disc leveling by using computer control after the drop adjusting disc is placed stably, and enabling each jack at four corners of a prefabricated foundation to respectively output lifting or descending instructions when each jack at two corners of the prefabricated foundation is controlled to be not in a horizontal state according to gyroscope transmission data installed at two adjacent sides, wherein when one jack receives two identical instructions, executing the instructions, and when two different instructions are all in the horizontal state, outputting locking instructions and locking 4 jacks; s4, installing an infrared inclinometer before hoisting the steel pipe column, and performing monitoring adjustment according to data measured by the infrared inclinometer; S5, fine adjustment of the verticality of the steel tube, namely reading displacement readings delta X and delta Y in the X and Y directions in real time through an infrared inclinometer, and then adjusting the verticality of the steel tube through 8 adjusting rods on an adjusting plate to improve the adjusting precision; S6, pouring concrete, namely after the verticality of the steel pipe column is adjusted, finishing secondary cleaning and pouring underwater concrete, and removing the verticality adjusting plate after one-column-one-pile construction is finished. In the step S2, the prefabricated foundation is square, the size of the prefabricated foundation is the same as that of the locating frame, the bottom of the prefabricated foundation is a 30mm thick steel plate, the middle of the prefabricated foundation is provided with holes, the hole diameter of the prefabricated foundation is slightly larger than the diameter of a pile, the prefabricated foundation is formed by four 20# I-steel beams, the four corners of the prefabricated foundation are respectively provided with a jack and are connected with universal spherical hinges at the four corners of the vertical adjusting disc, and four gyroscopes are arranged at the periphery of the locating frame and are respectively positioned at the midpoints of the four sides. Prefer