A pre-embedded building deviation correction jacking method

Abstract

The application provides a pre-embedded building deviation correction and jacking method, step 1: a lifting mechanism is pre-embedded in a frame column at a connecting position of the frame column and a foundation, step 2: when the building is corrected or jacked, one or more frame columns need to be jacked; the frame column at the position of the lifting mechanism is dug out, the concrete in the frame column is removed, the lifting mechanism is exposed, and the lifting mechanism is connected with an external driving element; step 3: the vertical stress reinforcement at the corresponding position of the lifting mechanism is temporarily disconnected, then the lifting mechanism is lifted to drive the frame column above the lifting mechanism to be lifted; the height is adjusted until the height of the frame column is in place; step 4: after all the frame columns that need to be adjusted are adjusted in place, the driving element is disconnected, the vertical stress reinforcement is connected again, and the concrete at the position of the frame column is poured. The application meets the needs of deviation correction and later reconstruction of existing buildings in the future.

Description

Technical Field

[0001] This invention belongs to the field of building engineering, and specifically relates to a pre-embedded building correction and jacking method. Background Technology

[0002] Since the 1990s, many buildings constructed on a large scale during the early stages of rapid urbanization have reached their 30-year service life. A significant portion of these existing buildings are nearing or have already reached their designed lifespan. Coupled with the relatively low building design standards at the time, many existing building structures are entering a period of rapid deterioration, and old urban communities are also entering a period of decline. Therefore, the state has timely and comprehensively launched the renovation of old urban communities, shifting from the past simple large-scale demolition and construction to a new urban renewal model that combines preservation, renovation, and demolition, preserving and utilizing existing structures while enhancing their functions to maximize the preservation of urban vitality. Among many existing buildings, uneven settlement due to various reasons has caused building tilting, which in severe cases affects normal use and poses a risk of partial or even complete collapse, seriously threatening personal safety and property. Timely measures such as tilt correction, repositioning, and reinforcement are necessary. Traditional methods for correcting the tilt of existing buildings fall into two main categories: forced settlement and jacking. These methods have poor controllability, are highly experience-based, and have drawbacks and risks such as high costs, loss of control, and poor effectiveness. Furthermore, they generate a large amount of construction waste, and the corrected existing buildings may tilt again.

[0003] With urban development, especially the continuous optimization and improvement of street-front building planning, existing buildings also face renovations such as multiple functional adjustments and constant changes in form, such as adding floors or increasing the floor height of the first floor. Traditional jacking and correction methods cannot meet the new requirements of urban renewal. Summary of the Invention

[0004] This invention provides a pre-embedded building correction and jacking method.

[0005] The objective of this invention is achieved in the following manner: a pre-embedded building correction and jacking method, comprising: Step 1: pre-embedding a lifting mechanism in the frame column at the connection position between the building's frame column and the foundation; Step 2: during building correction or jacking, one or more frame columns need to be jacked; excavating the ground to expose the frame column at the corresponding position of the lifting mechanism, removing the concrete inside the frame column to expose the lifting mechanism, and connecting the lifting mechanism to an external drive element; Step 3: temporarily disconnecting the vertical reinforcing steel bars at the corresponding position of the lifting mechanism, and then lifting the frame column above the lifting mechanism to rise; adjusting the height until the frame column reaches the correct height; Step 4: after all the frame columns that need adjustment are in place, disconnecting the drive element, extending and reconnecting the vertical reinforcing steel bars; pouring concrete at the required position of the frame column.

[0006] In step 1, the lifting mechanism is a jack with a self-locking function, the driving element is an oil pump, and the jack is connected to the oil pump through an oil pipe.

[0007] In step 1, an isolation mechanism is set around the jack inside the frame column to separate the jack from the surrounding concrete. The isolation mechanism includes an isolation film, an isolation agent, or an isolation shell.

[0008] When uneven settlement of the foundation of some frame columns causes the main structure of the building to tilt, the uneven settlement is adjusted by lifting the jacks pre-installed in the corresponding frame columns, thus restoring the building to its upright position. After all the unevenly settled frame columns are adjusted into place, the jacks are re-locked and protected, and then the frame columns at the connection points are poured. When the use of an existing building needs to be adjusted to increase the height of the ground floor, the frame columns are lifted multiple times with jacks until the new floor height requirement is met. Then, the reinforcing steel bars are extended and connected, and the concrete for the increased height of the frame columns and the connection points is poured. When preparing to add floors, the frame columns are lifted multiple times with jacks until the height of one floor is reached. The reinforcing steel bars are extended and the stirrups are connected. The new concrete frame columns are poured, and concrete beams and slabs are poured at the floor level.

[0009] In step 2, work pits are set up around the frame columns. The connection points of the frame columns will be exposed when the work pits around the frame columns are opened. In step 4, the work pits need to be restored.

[0010] The reinforcing bars in the frame column at the connection position are detachably connected via a flexible joint.

[0011] Compared to existing technologies, this invention is safe, reliable, easy to operate, widely applicable, efficient, and low-cost. By pre-installing lifting jacks at appropriate locations on the frame columns, it can adjust uneven settlement of existing buildings at any time, meeting the needs of future correction and renovation. This creates new possibilities for building functionality and provides a new approach to correcting tilt and deviation in existing buildings, effectively extending their service life. In addition to correcting tilt and deviation in existing buildings, this solution is also suitable for special buildings that are sensitive to settlement and have strict requirements for elevation, offering significant economic and social benefits. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention.

[0013] Figure 2 This is a schematic diagram of the connection position, working pit, and oil pump of the present invention.

[0014] Figure 3 It is a top-view cross-sectional view of the frame column and the surrounding working pit.

[0015] Figure 4 yes Figure 2 Enlarged view of the middle section.

[0016] Figure 5This is a schematic diagram of the layer addition of the present invention.

[0017] Among them, 1 is the frame column, 2 is the foundation, 3 is the connection position, 4 is the jack, 5 is the working pit, 6 is the oil pipe, 7 is the oil pump, 8 is the reinforcing steel bar, 9 is the flexible joint, 10 is the concrete beam and slab, and 11 is the newly added concrete frame column. Detailed Implementation

[0018] In this invention, unless otherwise expressly specified and limited, the technical terms used in this application shall have the ordinary meaning understood by those skilled in the art. Terms such as “connected,” “linked,” “fixed,” and “set” shall be interpreted broadly, referring to fixed connections, detachable connections, or integral connections; direct connections or indirect connections via an intermediate medium; mechanical connections or electrical connections. Unless otherwise expressly specified and limited, “above” or “below” a second feature may mean that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, “above,” “on top of,” or “on top of” a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. “Below,” “under,” or “beneath” a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Relational terms such as “first,” “second,” etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms used in the description, such as “center,” “lateral,” “longitudinal,” “length,” “width,” “thickness,” “height,” “front,” “rear,” “left,” “right,” “up,” “down,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” “circumferential,” “clockwise,” and “counterclockwise,” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Figure 1-5As shown, a pre-embedded building correction and jacking method is described. Step 1: A lifting mechanism is pre-embedded within the frame column 1 at the connection point 3 between the building's frame column 1 and foundation 2. Step 2: During building correction or jacking, one or more frame columns 1 need to be jacked. The ground is excavated to expose the frame column 1 at the corresponding lifting mechanism location. The concrete inside the frame column 1 is removed to expose the lifting mechanism, and the lifting mechanism is connected to an external drive element. Step 3: The vertical reinforcing steel bar 8 at the corresponding location of the lifting mechanism is temporarily disconnected. Then, the lifting mechanism raises the frame column 1 above it. The height is adjusted until the frame column 1 reaches the correct height. Step 4: After all the frame columns 1 requiring adjustment are in place, the drive element is disconnected, and the vertical reinforcing steel bar 8 is extended and reconnected. Concrete is poured at the required location for the frame column 1. The connection point 3 mentioned here can be any position between the foundation 2 and the building's bottom surface, preferably located near the building's ground level for convenient later construction. This invention allows a tilted building to be straightened. If the existing building tilts again in the future, the steps of this invention can be repeated to restore the existing building's tilt. This invention provides a final solution for building tilt and deviation correction, offers new ideas for existing building tilt and deviation correction, and creates new space for building functionality.

[0020] In step 1, the lifting mechanism is a self-locking jack 4, and the driving element is an oil pump 7. The jack 4 is connected to the oil pump 7 via an oil pipe 6. It can maintain the original set height for a long time without pressure from the oil pump 7. The jack 4 is placed inside the frame column 1 at the connection position 3. In operation, pressure is applied by the oil pump 7 to raise the jack 4 and lift the frame column 1.

[0021] In step 1, an isolation mechanism is set around the jack 4 inside the frame column 1 to separate the jack 4 from the surrounding concrete. This isolation mechanism includes an isolation film, an isolation agent, or an isolation shell. The isolation shell must ensure that the concrete outside the shell and the reinforcing steel bars 8 meet the load-bearing requirements of the frame column 1. The isolation film, isolation agent, or isolation shell separates the jack 4 from the surrounding concrete, facilitating the chiseling of the concrete at connection position 3. Inside the frame column 1 at connection position 3, the reinforcing steel bars 8 and stirrups are fixed within the concrete to meet the load-bearing requirements of the frame column 1. The connection method of the vertical reinforcing steel bars 8 and stirrups is existing technology and will not be described in detail.

[0022] When uneven settlement of the foundation 2 of some frame columns 1 causes the main structure of the building to tilt, the uneven settlement is adjusted by lifting the pre-installed jacks 4 in the corresponding frame columns 1, thus restoring the building to its upright position. After all the unevenly settled frame columns 1 are adjusted into place, the jacks 4 are re-locked and protected. Then, the frame column 1 at the connection point 3 is poured. When the use of the existing building needs to be adjusted to increase the height of the ground floor, the frame columns 1 are lifted multiple times using jacks 4 until the new height requirement is met. Then, the reinforcing steel bars 8 are extended and connected, and the concrete for the increased part of the frame column 1 and the connection point 3 is poured. When preparing to add floors, the frame columns 1 are lifted multiple times using jacks 4 until the height of one floor is reached. The reinforcing steel bars 8 are extended and the stirrups are connected. The new concrete frame column 11 is poured, and the concrete beam slab 10 is poured at the floor level. The protective measures for the jacks 4 include maintenance, repair, and the addition of isolation mechanisms, including isolation films, isolation agents, and isolation shells. After the jack 4 is lifted once, a temporary support can be set inside the frame column 1, and then the jack 4 can be retracted. A shim is placed under the jack 4 to achieve a second layer of lifting, and this process is repeated until multiple lifting operations are completed.

[0023] Preferably, working pits 5 are set around the ground around the frame column 1. In step 2, the working pits 5 around the frame column 1 are opened, and the connection position 3 of the frame column 1 will be exposed. In step 4, the working pits 5 need to be restored. Setting up the working pits 5 makes construction easier and eliminates the need to dig up a large area and depth of ground later.

[0024] Preferably, the reinforcing bars 8 within the connection position 3 of the frame column 1 are detachably connected via a flexible joint 9. Before the lifting mechanism elevates the column, the flexible joint 9 at connection position 3 is temporarily disconnected, and then reconnected after the column is in place. The flexible joint 9 is existing technology and will not be described in detail further.

[0025] This invention is safe, reliable, easy to operate, widely applicable, efficient, and low-cost. By pre-installing lifting jacks 4 at appropriate locations on the frame column 1, it can adjust uneven settlement of existing buildings at any time, meeting the needs of future correction and renovation. This creates new possibilities for building functionality and provides a new approach to correcting tilt and deviation in existing buildings, effectively extending their service life. In addition to correcting tilt and deviation in existing buildings, this solution is also suitable for special buildings that are sensitive to settlement or have strict requirements for elevation. This invention has advantages such as low investment, low maintenance costs, and reusability, reducing building renovation costs, reducing construction waste, and contributing to environmental protection and dust control, resulting in significant economic and social benefits.

[0026] The technical features of the embodiments described above can be combined in any way, and as long as there is no contradiction in the combination of these technical features, they should all be considered within the scope of this specification. Without departing from the overall concept of this invention, any technical solutions based on this invention, as well as equivalent substitutions or modifications, and various changes and improvements made, should also be considered within the scope of protection of this invention.

Claims

1. A pre-embedded building correction jacking method, characterized in that: Step 1: Embed a lifting mechanism within the frame column at the connection point between the building's frame column and the foundation. Step 2: When correcting or jacking the building, one or more frame columns need to be jacked up. Excavate the ground to expose the frame column at the corresponding lifting mechanism location, remove the concrete inside the frame column to expose the lifting mechanism, and connect the lifting mechanism to an external drive element. Step 3: Temporarily disconnect the vertical reinforcing steel bars at the corresponding location of the lifting mechanism, then lift the frame column above the lifting mechanism to raise it. Adjust the height until the frame column reaches the correct height. Step 4: After all the frame columns requiring adjustment are in place, disconnect the drive element, extend and reconnect the vertical reinforcing steel bars, and pour the concrete at the location required for the frame columns. In step 1, the lifting mechanism is a jack with a self-locking function, the driving element is an oil pump, and the jack is connected to the oil pump through an oil pipe. In step 1, an isolation mechanism is set around the jack inside the frame column to separate the jack from the surrounding concrete. The isolation mechanism includes an isolation film, an isolation agent, or an isolation shell.

2. The pre-embedded building correction jacking method according to claim 1, characterized in that: When uneven settlement of the foundation of some frame columns causes the main structure of the building to tilt, the uneven settlement is adjusted by lifting the jacks pre-installed in the corresponding frame columns, thus restoring the building to its upright position. After all the unevenly settled frame columns are adjusted into place, the jacks are re-locked and protected, and then the frame columns at the connection points are poured. When the use of an existing building needs to be adjusted to increase the height of the ground floor, the frame columns are lifted multiple times with jacks until the new floor height requirement is met. Then, the reinforcing steel bars are extended and connected, and the concrete for the increased height of the frame columns and the connection points is poured. When preparing to add floors, the frame columns are lifted multiple times with jacks until the height of one floor is reached. The reinforcing steel bars are extended and the stirrups are connected. The new concrete frame columns are poured, and concrete beams and slabs are poured at the floor level.

3. The pre-embedded building correction jacking method according to any one of claims 1-2, characterized in that: In step 2, work pits are set up around the frame columns. The connection points of the frame columns will be exposed when the work pits around the frame columns are opened. In step 4, the work pits need to be restored.

4. The pre-embedded building correction jacking method according to any one of claims 1-2, characterized in that: The reinforcing bars in the frame column at the connection position are detachably connected via a flexible joint.

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