CN-122014027-A - Method for adjusting elevation and landing in-place in building translation construction

CN122014027ACN 122014027 ACN122014027 ACN 122014027ACN-122014027-A

Abstract

The invention belongs to a method for adjusting elevation and landing in place in building translation construction in the field of urban updating construction. In the process of returning and resetting the building to the newly built basement roof, a temporary platform consisting of a heightened steel beam and a heightened steel cushion block is firstly paved on the newly built basement roof in advance so as to solve the problem of height difference between the newly built basement roof and the translation track. And secondly, adding triangular haunching plates at corners of the wall clamping beams for supporting the building. The landing jack is arranged directly under the haunching plate. The arrangement mode greatly reduces the eccentric bending moment born by the underpinning structure and ensures the absolute safety of the falling process. Finally, a set of repeatable standardized circulation steps is designed, and the existing building is always and reliably supported in the landing process. The invention aims to overcome the defects of the prior art and provides a building translation landing method which is safe to operate, accurate to control, capable of effectively coordinating foundation height difference and optimizing a landing stress path.

Inventors

Su Yinjun
LI JING
WANG WEIDONG
WENG QIPING

Assignees

华东建筑设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (3)

1. The method for adjusting elevation and landing in place in the construction of building translation is characterized by comprising the following steps: Firstly, widening and reinforcing a foundation of an existing building (1), forming a wall clamping beam structure (2) to support the whole existing building (1), arranging a haunching plate (3) at the corner position of the wall clamping beam structure (2), arranging a walking device (4) at the bottom of the wall clamping beam structure (2), arranging a heightening steel cushion block (11) on a newly built basement roof (7), arranging a heightening steel beam (5) on the heightening steel cushion block (11), and enabling the heightening steel beam (5) to serve as a translation track of the walking device (4), and translating the existing building (1) to a preset position of the newly built basement roof (7) by utilizing the walking device (4); Setting a landing jack (8) and a first steel cushion block (61) below the haunched plate (3) after the existing building (1) is translated to the preset position, and setting the first steel cushion block (61) on the newly built basement roof (7), tightly jacking the haunched plate (3) by using the landing jack (8), transferring the load of the existing building (1) to the landing jack (8) below the haunched plate (3), and removing the walking device (4), the raising steel girder (5) and the raising steel cushion block (11) below the wall-clamping girder structure (2) in a partitioning manner on the basis; Setting a second steel cushion block (62) below the foundation of the existing building (1), wherein the second steel cushion block (62) is piled up from the newly built basement roof (7), and the foundation of the existing building (1) and the second steel cushion block (62) are spaced by a distance which is determined according to one landing stroke of the landing jack (8); Step four, controlling an oil pressure system of the landing jack (8) to perform pressure relief landing, wherein after one stroke of landing, the existing building (1) falls onto the second steel cushion block (62) right below the foundation, and at the moment, the load of the existing building (1) is transferred onto the second steel cushion block (62); Step five, detaching one section of the first steel cushion block (61) below the landing jack (8), extending an oil cylinder of the landing jack (8), and propping up the haunching plate (3) again, wherein the load of the existing building (1) is transferred to the landing jack (8) below the haunching plate (3) again; repeating the steps three to five until the existing building (1) is lowered onto the newly built basement roof (7); And step six, pouring a connecting material (9) in a gap between the foundation of the existing building (1) and the wall clamping beam structure (2) and the newly-built basement roof (7), and dismantling the landing jack (8) and the haunching plate (3) after the connecting material (9) reaches the design strength.
2. The method for adjusting elevation and landing in place in translational construction of building according to claim 1, wherein in the third step, limiting devices (10) are arranged on two sides of the wall-clamping beam structure (2) to prevent the accuracy of landing position from being affected by wind load and other factors in the landing process.
3. The method for adjusting elevation and landing in place in translational construction of building according to claim 1, wherein in the step six, the connecting material (9) is micro-expansive concrete or high-strength grouting material.

Description

Method for adjusting elevation and landing in-place in building translation construction Technical Field The invention belongs to the technical field of building construction, in particular to a building integral translation construction method, and particularly relates to a method capable of effectively overcoming the height difference of a basic top plate and realizing safe and controllable landing in the translation return reset process of a building. Background With the economic and urban development and the increasing demands of people, urban updating and existing building reconstruction are facing urgent demands. Because the construction period is early, underground space is not arranged, so that the problems of insufficient matching of commercial facilities, difficult parking and the like are outstanding abnormally, and the urban area, especially the historical landscape neighborhood in the urban core area, lacks vitality and faces urgent and heavy update and transformation tasks. Currently, with the acceleration of the urban updating process of the central urban area, the demands for land intensive utilization and function upgrading are increasingly urgent. Under the background, the underground space (such as underground parking lots, commercial facilities, transportation hubs and the like) is developed below the existing historical buildings or important structures while the existing historical buildings or important structures are reserved, so that the method becomes a key strategy for realizing the increment of the storage land and optimizing the urban function layout. The mode of upper part reservation and lower part development can protect urban landscapes and veins to the greatest extent, and simultaneously efficiently expand urban space capacity. However, this mode presents unprecedented challenges to engineering construction techniques. The integral translation technology of the building is an effective means in the development of the underground space of the existing building. One of the key links is to lift up the whole existing building and temporarily translate the whole building, and accurately and safely drop the underground structure onto a newly built basement roof after the construction of the underground structure is completed. This process faces multiple technical challenges: (1) There is usually a significant height difference between the construction elevation of the newly built basement roof and the original foundation of the building or the temporary translation track, and in addition, the surface of the basement roof is often uneven due to the building function requirement. (2) How to transfer huge vertical load of a building from a temporary translation system to a permanent basement roof structure stably, controllably and in a non-impact manner is a core of building structure safety and lower new structure safety. The conventional translation landing technology is mostly aimed at the condition of flat ground or small height difference, and lacks a mature scheme for solving the complex height difference, fine load transfer and stress optimization. Therefore, developing a construction method which is suitable for the special scene of 'underground space development under existing buildings' in urban updating, can overcome obvious height difference and realize ultra-low level stable landing and load accurate conversion becomes a key technical bottleneck to be broken through in the field. The present invention has been made in view of this urgent engineering need. Disclosure of Invention The invention provides a method for adjusting elevation and landing in place in building translation construction, which is particularly suitable for the situation that underground space development under the existing building is realized in a center urban area in a reciprocating translation mode. The invention aims to overcome the defects of the prior art and provides a building translation landing method which is safe to operate, accurate to control, capable of effectively coordinating foundation height difference and optimizing a landing stress path. The concrete construction steps are as follows: Firstly, widening and reinforcing a foundation of an existing building to form a wall-clamping beam structure for supporting the whole existing building, wherein an armpit plate is arranged at the corner position of the wall-clamping beam structure, and a walking device is arranged at the bottom of the wall-clamping beam structure. And translating the existing building to a preset position of the newly built basement roof by using the walking device. Because a certain height difference exists between the original site in the translation process and the newly-built basement roof, a heightened steel beam and a heightened steel cushion block are required to be arranged on the newly-built basement roof before the translation is located. And the heightening steel cushion block is provided with a heighten