阅读说明：本技术 一种高层剪力墙结构顶升纠偏装置及操作方法 (Jacking deviation rectifying device for high-rise shear wall structure and operation method ) 是由 李延和 李帅 卢意 周贤阳 上官余颖 盖依 李胜蓝 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种高层剪力墙结构顶升纠偏装置,包括与被顶升上部剪力墙结构底端连接的上托换承台和同原下部结构相连的下托换承台,所述上托换承台底部均匀对称布置若干台千斤顶,所述千斤顶底部和顶部均设有防局压钢垫块,所述下托换承台和原下部结上对称布置有若干限位支墩,所述限位支墩底部与所述下部结构底板相连,所述限位支墩顶部与所述上托换承台之间设有承压钢梁和可调节垫板。本发明能均匀和有约束的向上稳步顶升,限位支墩的存在一方面可以分担千斤顶的顶升力,减少上托换承台的应力集中以及减少对上部结构的影响,同时限位支墩可以有效避免顶升过程中顶力不均匀而产生水平方向的偏移,确保顶升纠偏过程的安全可靠。(The invention discloses a jacking deviation rectifying device of a high-rise shear wall structure, which comprises an upper jacking bearing platform connected with the bottom end of a jacked upper shear wall structure and a lower jacking bearing platform connected with an original lower structure, wherein a plurality of jacks are uniformly and symmetrically arranged at the bottom of the upper jacking bearing platform, local-pressure-proof steel cushion blocks are arranged at the bottoms and the tops of the jacks, a plurality of limiting buttresses are symmetrically arranged on the lower jacking bearing platform and the original lower structure, the bottoms of the limiting buttresses are connected with a bottom plate of the lower structure, and a pressure-bearing steel beam and an adjustable cushion plate are arranged between the tops of the limiting buttresses and the upper jacking bearing platform. The jacking device can be used for uniformly and stably jacking upwards in a constrained manner, the existence of the limiting buttress can share the jacking force of the jack on one hand, reduce the stress concentration of the upper underpinning bearing platform and reduce the influence on the upper structure, and meanwhile, the limiting buttress can effectively avoid horizontal deviation caused by uneven jacking force in the jacking process, so that the safety and reliability of the jacking deviation rectifying process are ensured.)

1. The utility model provides a high-rise shear wall structure jacking deviation correcting device which characterized in that: the steel-reinforced composite underpinning structure comprises an underpinning structure, an underpinned shear wall, a limiting buttress, a local pressure-resistant steel cushion block, a jack, an upper jacked shear wall, an upper underpinning bearing platform, a lower underpinning bearing platform, an original structure floor slab, an original structure lower shear wall, horizontal steel bars, an underpinning bearing platform steel bar framework, a pressure-bearing steel beam, a steel cushion block, an adjustable cushion block, a polyurethane foam plate and a limiting buttress steel bar framework;

the underpinning structure comprises underpinned shear walls, an upper underpinning bearing platform is connected with the bottom end of a jacked upper shear wall, a lower underpinning bearing platform is connected with a shear wall at the lower part of an original structure, the upper underpinning bearing platform and the lower underpinning bearing platform are both of reinforced concrete structures, a plurality of jacks are uniformly and symmetrically arranged at the bottom of the upper underpinning bearing platform, local pressure preventing cushion blocks are arranged at the bottoms and the tops of the jacks, a plurality of limiting support piers are symmetrically arranged between the upper underpinning bearing platform and a floor slab of the original structure, the limiting support piers are of reinforced concrete structures, the bottoms of the limiting support piers are connected with the floor slab of the original structure, a pressure-bearing steel beam is arranged between the tops of the limiting support piers and the upper underpinning bearing platform, adjustable cushion blocks and steel cushion blocks are arranged on the pressure-bearing steel beam;

the limiting buttress steel bar framework is arranged in the limiting buttress and comprises limiting buttress vertical steel bars and limiting buttress horizontal stirrups, so that the limiting buttress and the original structural floor slab are cast into a whole;

the lower underpinning bearing platform and the upper underpinning bearing platform are symmetrical and have the same structure; the upper underpinning bearing platform and the lower underpinning bearing platform are internally provided with underpinning bearing platform steel reinforcement frameworks, and the underpinning bearing platform steel reinforcement frameworks comprise bearing platform stirrups, bearing platform longitudinal reinforcements and bearing platform bottom horizontal reinforcements; horizontal steel bars are implanted into the lifted upper shear wall inside the upper underpinning bearing platform, and the upper underpinning bearing platform and the lifted upper shear wall are connected into a whole.

2. The jacking and deviation-rectifying device for the high-rise shear wall structure according to claim 1, characterized in that: the pressure-bearing steel beam is H-shaped steel.

3. The jacking and deviation-rectifying device for the high-rise shear wall structure according to claim 1, characterized in that: the adjustable cushion block is a wedge-shaped steel plate.

4. The jacking and deviation-rectifying device for the high-rise shear wall structure according to claim 1, characterized in that: the polyurethane foam board is used as a template of the limiting buttress.

5. The jacking and deviation-rectifying device for the high-rise shear wall structure according to claim 1, characterized in that: the jack is a hydraulic jack.

6. The operation method of the deviation correcting device for jacking of the high-rise shear wall structure according to claim 1, 2, 3, 4 or 5, is characterized in that: the method comprises the following steps:

1) before installation, the positions of a jack, a steel cushion block and a limiting buttress need to be extracted and positioned, vertical steel bars of the limiting buttress are simultaneously manufactured and reserved on an upper underpinning bearing platform and a lower underpinning bearing platform, after the jack is placed in place after the manufacture is finished, the jack needs to be tightly jacked on the upper underpinning bearing platform, a gap between the jack and the upper underpinning bearing platform is plugged by an adjustable cushion block, and then the original building is cut into a jacked upper shear wall and an original structure lower shear wall;

2) in the jacking process, a staged jacking mode is adopted, the jacking amount of each stage is not more than 5mm, each jacking stage is one magnitude, an adjustable cushion block is tightly propped against a gap between a limiting buttress and an upper underpinning bearing platform, when the adjustable cushion block is not enough to adjust and compensate the gap, the height of a pressure-bearing steel beam is changed and tightly propped by the adjustable cushion block, and the steps are repeated in a circulating manner until the jacking is carried out to the designed jacking height; and after the continuous reinforcement of the jacked upper shear wall and the lower shear wall of the original structure is finished, the upper underpinning bearing platform, the lower underpinning bearing platform and the limiting buttress are removed.

Technical Field

The utility model relates to a building engineering technical field, in particular to high-rise shear wall structure whole jacking deviation correcting device and operation method.

Background

With the continuous promotion of the urbanization process, a large number of high-rise buildings are increased, the inclination of the buildings is caused by the factors of large self load of the high-rise buildings and reconnaissance, design, construction and the like, and the existing building deviation correction methods mainly comprise a forced landing method, a jacking method and the like aiming at the inclination correction of the buildings.

The jacking method is characterized in that a jacking underpinning bearing platform is arranged on a vertical bearing component, after the structure is cut off and separated at a certain position, a jack is reused for lifting the whole structure, the operation process of the jacking underpinning method generally starts to jack the whole structure to one magnitude of height along one direction, then the jacking underpinning method jacks the whole structure to the other direction, and the jacking underpinning method is used for circulating for certain times to reach the designed jacking height according to the jacking process.

The jacking deviation rectifying process control of the high-rise building is extremely important, and particularly needs to prevent horizontal deviation in the jacking process so as to avoid influencing an upper structure. Because the upper structure and the former substructure that are jacked in the jacking process are separated and the object is vertically restrained, the uniformity of jacking force and the synchronous harmony of jacking displacement are difficult to guarantee, consequently make upper structure and former substructure produce horizontal dislocation easily, influence the recovery of structure.

Disclosure of Invention

The invention aims to provide an integral jacking deviation correcting device of a high-rise building shear wall structure and an operation method, aiming at reducing the damage of the traditional jacking method to the original structure during deviation correction, avoiding the deviation error of the horizontal structure caused by uneven jacking force and the like in the jacking process and ensuring the coordination, safety and stability of the jacking process.

The technical scheme adopted by the invention is as follows: a jacking deviation correcting device for a high-rise shear wall structure comprises a underpinning structure, an underpinned shear wall, a limiting buttress, a local pressure prevention steel cushion block, a jack, an upper jacked shear wall, an upper underpinning bearing platform, a lower underpinning bearing platform, an original structure floor slab, an original structure lower shear wall, horizontal steel bars, an underpinning bearing platform steel reinforcement framework, a pressure-bearing steel beam, a steel cushion block, an adjustable cushion block, a polyurethane foam plate and a limiting buttress steel reinforcement framework;

the underpinning structure comprises underpinned shear walls, an upper underpinning bearing platform is connected with the bottom end of a jacked upper shear wall, a lower underpinning bearing platform is connected with a shear wall at the lower part of an original structure, the upper underpinning bearing platform and the lower underpinning bearing platform are both of reinforced concrete structures, a plurality of jacks are uniformly and symmetrically arranged at the bottom of the upper underpinning bearing platform, local pressure preventing cushion blocks are arranged at the bottoms and the tops of the jacks, a plurality of limiting support piers are symmetrically arranged between the upper underpinning bearing platform and a floor slab of the original structure, the limiting support piers are of reinforced concrete structures, the bottoms of the limiting support piers are connected with the floor slab of the original structure, a pressure-bearing steel beam is arranged between the tops of the limiting support piers and the upper underpinning bearing platform, adjustable cushion blocks and steel cushion blocks are arranged on the pressure-bearing steel beam;

the limiting buttress steel bar framework is arranged in the limiting buttress and comprises limiting buttress vertical steel bars and limiting buttress horizontal stirrups, so that the limiting buttress and the original structural floor slab are cast into a whole;

the lower underpinning bearing platform and the upper underpinning bearing platform are symmetrical and have the same structure; the upper underpinning bearing platform and the lower underpinning bearing platform are internally provided with underpinning bearing platform steel reinforcement frameworks, and the underpinning bearing platform steel reinforcement frameworks comprise bearing platform stirrups, bearing platform longitudinal reinforcements and bearing platform bottom horizontal reinforcements; horizontal steel bars are implanted into the lifted upper shear wall inside the upper underpinning bearing platform, and the upper underpinning bearing platform and the lifted upper shear wall are connected into a whole.

Preferably, the pressure-bearing steel beam is H-shaped steel, and the height is selected according to the distance between the upper underpinning bearing platform and the limiting buttress.

Preferably, the adjustable cushion block is a wedge-shaped steel plate and is used for filling a gap between the upper underpinning bearing platform and the pressure-bearing steel beam, and the purpose of limiting the lateral displacement by selecting a proper steel beam and the cushion block according to the gap between the limiting buttress and the upper underpinning bearing platform in the jacking process is achieved.

Preferably, the polyurethane foam board can be used as a template of the limiting buttress. The method can reduce the workload of erecting and dismantling the template, is convenient to manufacture, and plays a certain role in buffering the horizontal deviation possibly generated by deviation rectification.

Preferably, the jack is a hydraulic jack and is supported between the upper underpinning bearing platform and the original lower structure floor slab. And the upper part and the lower part of the jack are both provided with local pressure prevention steel base plates so as to reduce stress concentration.

The operation method of the jacking deviation correcting device of the high-rise shear wall structure comprises the following steps:

1) before installation, the positions of a jack, a steel cushion block and a limiting buttress need to be extracted and positioned, vertical steel bars of the limiting buttress are simultaneously manufactured and reserved on an upper underpinning bearing platform and a lower underpinning bearing platform, after the jack is placed in place after the manufacture is finished, the jack needs to be tightly jacked on the upper underpinning bearing platform, a gap between the jack and the upper underpinning bearing platform is plugged by an adjustable cushion block, and then the original building is cut into a jacked upper shear wall and an original structure lower shear wall;

2) in the jacking process, a staged jacking mode is adopted, the jacking amount of each stage is not more than 5mm, each jacking stage is one magnitude, an adjustable cushion block is tightly propped against a gap between a limiting buttress and an upper underpinning bearing platform, when the adjustable cushion block is not enough to adjust and compensate the gap, the height of a pressure-bearing steel beam is changed and tightly propped by the adjustable cushion block, and the steps are repeated in a circulating manner until the jacking is carried out to the designed jacking height; and after the continuous reinforcement of the jacked upper shear wall and the lower shear wall of the original structure is finished, the upper underpinning bearing platform, the lower underpinning bearing platform and the limiting buttress are removed.

The invention can realize stable jacking of the shear wall structure, and the limit buttress can limit the horizontal displacement of the upper structure. The upper underpinning bearing platform and the lower underpinning bearing platform are both of reinforced concrete structures, the upper underpinning bearing platform is cast together with the bottom end of the upper shear wall to be jacked, and the lower underpinning bearing platform is cast together with the shear wall and the floor slab of the original lower structure of the building. The upper underpinning bearing platform and the lower underpinning bearing platform enable the bearing platform and the shear wall of the original structure to form a whole in a rib planting mode. So as to prevent the underpinning bearing platform and the shear wall from sliding.

The limiting buttress is of a reinforced concrete structure, the limiting buttress is poured together with a floor slab of an original lower structure, and a pressure-bearing steel beam and a wedge-shaped steel base plate are arranged between the limiting buttress and the upper underpinning bearing platform. And the vertical steel bars of the limiting buttress are embedded in advance and extend out of the plate surface when the lower supporting and changing bearing platform is manufactured. The vertical steel bars and the stirrups in the horizontal direction form a steel bar framework of the limiting buttress.

Has the advantages that: the invention can carry out integral deviation correction on the shear wall of the inclined high-rise building and can effectively limit the horizontal deviation of the structure possibly generated in the jacking process. Construction convenience, jacking device safe and reliable, it is efficient to rectify the deviation, and jack and steel cushion block etc. can cyclic utilization many times, save material.

Drawings

Fig. 1 is a schematic plan view of the present invention.

Fig. 2 is a schematic sectional view of fig. 1-1.

Fig. 3 is a schematic sectional view of 2-2 in fig. 1.

Fig. 4 is a schematic sectional view of the structure of 3-3 in fig. 1.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1, 2, 3 and 4, a jacking deviation rectifying device for a high-rise shear wall structure comprises a underpinning structure 1, an underpinned shear wall 2, a limiting buttress 3, a local pressure prevention steel cushion block 4, a jack 5, a jacked upper shear wall 6, an upper underpinning bearing platform 7, a lower underpinning bearing platform 8, an original structure floor slab 9, an original structure lower shear wall 10, horizontal steel bars 11, an underpinning bearing platform steel reinforcement framework 12, a pressure-bearing steel beam 13, a steel cushion block 14, an adjustable cushion block 15, a polyurethane foam plate 16 and a limiting buttress steel reinforcement framework 17;

the underpinning structure 1 comprises an underpinned shear wall 2, the upper underpinning bearing platform 7 is connected with the bottom end of a jacked upper shear wall 6, the lower underpinning bearing platform 8 is connected with a shear wall 10 at the lower part of the original structure, the upper underpinning bearing platform 7 and the lower underpinning bearing platform 8 are both of reinforced concrete structures, a plurality of jacks 5 are uniformly and symmetrically arranged at the bottom of the upper underpinning bearing platform 7, the bottoms and the tops of the jacks 5 are both provided with local pressure prevention cushion blocks 4, a plurality of limiting buttresses 3 are symmetrically arranged between the upper underpinning bearing platform 7 and the original structure floor slab 9, the limiting buttresses 3 are of a reinforced concrete structure, the bottoms of the limiting buttresses 3 are connected with the original structure floor slab 9, a pressure-bearing steel beam 13 is arranged between the top of the limiting buttresses 3 and the upper underpinning bearing platform 7, adjustable cushion blocks 15 and steel cushion blocks 14 are arranged on the pressure-bearing steel beam 13, and polyurethane foam plates 16 are arranged in gaps between the limiting buttresses 3 and the jacked upper shear wall 6;

the limiting buttress steel reinforcement framework 17 is arranged in the limiting buttress 3, and the limiting buttress steel reinforcement framework 17 comprises limiting buttress vertical steel bars 171 and limiting buttress horizontal stirrups 172, so that the limiting buttress 3 and the original structural floor slab 9 are cast into a whole;

the lower underpinning bearing platform 8 and the upper underpinning bearing platform 7 are symmetrical and have the same structure; the underpinning bearing platform steel reinforcement frameworks 12 are arranged in the upper underpinning bearing platform 7 and the lower underpinning bearing platform 8, and the underpinning bearing platform steel reinforcement frameworks 12 comprise bearing platform stirrups 121, bearing platform longitudinal reinforcements 122 and bearing platform bottom horizontal reinforcements 123; horizontal steel bars 11 are implanted into the lifted upper shear wall 6 inside the upper underpinning bearing platform 7, and the upper underpinning bearing platform 7 and the lifted upper shear wall 6 are connected into a whole.

The pressure-bearing steel beam 13 is H-shaped steel, and the height is selected according to the distance between the upper underpinning bearing platform and the limiting buttress. The adjustable cushion block 15 is a wedge-shaped steel plate and is used for filling a gap between the upper underpinning bearing platform 7 and the pressure-bearing steel beam 13, and the purpose of limiting the lateral displacement by selecting a proper steel beam and cushion block according to the gap between the limiting buttress 3 and the upper underpinning bearing platform 7 in the jacking process is achieved. The polyurethane foam board 16 can be used as a template of a limiting buttress. The method can reduce the workload of erecting and dismantling the template, is convenient to manufacture, and plays a certain role in buffering the horizontal deviation possibly generated by deviation rectification. The jack 5 is a hydraulic jack and is supported between the upper underpinning bearing platform and the original lower structure floor slab.

The operation method of the jacking deviation correcting device of the high-rise shear wall structure comprises the following steps:

1) before installation, the positions of a jack 5, a steel cushion block 4 and a limiting buttress 3 need to be extracted and positioned, vertical steel bars of the limiting buttress 3 are simultaneously manufactured and reserved on an upper underpinning bearing platform 7 and a lower underpinning bearing platform 8, after the jack 5 is placed in place after the manufacture is finished, the jack 5 needs to be tightly jacked on the upper underpinning bearing platform 7, a gap between the jack 5 and the upper underpinning bearing platform 7 is tightly plugged by an adjustable cushion block 15, and then the original building is cut into a jacked upper shear wall 6 and a lower shear wall 10 of the original structure;

2) in the jacking process, a stepped jacking mode is adopted, the jacking amount of each stage is not more than 5mm, each jacking stage is one magnitude, an adjustable cushion block 15 is tightly jacked at a gap between the limiting buttress 3 and the upper underpinning bearing platform 7, when the adjustable cushion block 15 is not enough to adjust and compensate the gap, the height of the pressure-bearing steel beam 13 is changed and the adjustable cushion block 15 is tightly jacked, and the steps are repeated in a circulating mode until the jacking is carried out to the designed jacking height; and after the jacked upper shear wall 6 and the original structure lower shear wall 10 are continuously reinforced, the upper underpinning bearing platform 7, the lower underpinning bearing platform 8 and the limiting buttress 3 are removed.

The method provided by the invention is simple and easy to implement, is particularly suitable for jacking and rectifying the deviation of a large-chassis high-rise shear wall structure, is convenient to operate by arranging the jacking position on the ground layer, can achieve the aim of integral jacking and rectifying the deviation, and can also effectively prevent the possible horizontal deviation and dislocation from influencing the structure after rectifying and recovering.

The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made on the embodiments without departing from the spirit and scope of the inventive concept.