Inclination rectifying method for cultural relics taking care of wall
Through the methods of erection of protective frames, foundation underpinning, cutting and lifting, the problem that traditional reinforcement methods cannot correct the tilt of cultural relics on the screen wall is solved, the safe tilting of cultural relics buildings and the stability restoration of the foundation are achieved, and the tilting process is avoided. uncontrollable destruction.
Patent Information
- Application Number
- CN202411491071.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-01-24
AI Technical Summary
The traditional method of reinforcement of screen wall cultural relics cannot effectively correct the inclination of cultural relics buildings, resulting in structural safety risks. The process of reclamation can easily damage cultural relics buildings and foundations, and even lead to overturning and collapse.
Adopting the method of setting up a protective rack, basic support, basic cutting, and improving conflict, the foundation pit, cutting the existing foundation, setting reaction beams and jacks through the formation of basic pits under the cultural relics of the wall to realize Sexual recovery.
Achieve the security of the cultural relics in the wall, the dangerous point of lift the cultural relic structure, and avoid the uncontrollable damage of the Chinese material architecture and the foundation of the conflict process. Essence
Smart Images
Figure CN119352797A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of tilt correction of cultural relics buildings, and in particular to a method for correcting the tilt of a screen wall cultural relic. Background Art
[0002] Due to factors such as disrepair, extreme climate and surrounding environment, the Zhaobi cultural relic building has uneven settlement and tilt, affecting the structural safety of the Zhaobi cultural relic. The traditional approach is to use the contrast wall cultural relic to reinforce it to improve the stability of the cultural relic building; but this reinforcement method is not effective. Without correcting the tilt of the contrast wall cultural relic, the Zhaobi cultural relic is still in a tilted state, and the dangerous points of the cultural relic structure have not been eliminated.
[0003] Furthermore, in order to solve the shortcomings of traditional methods of reinforcing cultural relics buildings, some inventors have adopted building correction methods to correct the tilt of cultural relics buildings. However, there are often loose structures in the screen wall cultural relics and their existing foundations. In the correction process, the cultural relics buildings are easily damaged, the foundations of the cultural relics buildings suffer uncontrollable damage that is difficult to repair, and even the screen wall cultural relics may overturn and collapse. Summary of the invention
[0004] The purpose of the present invention is to provide a method for correcting the tilt of a screen wall cultural relic, which can not only correct the tilt of the screen wall cultural relic and eliminate the dangerous points of the cultural relic structure; but also effectively avoid the problems of damage to the cultural relic building, uncontrollable damage to the foundation of the cultural relic building, and overturning and collapse of the screen wall cultural relic during the correction process.
[0005] The technical solution of the present invention is: A method for correcting the tilt of a screen wall cultural relic comprises the following steps: A protection frame is set up to protect the cultural relics on the screen wall. Based on this, in the subsequent lifting and tilting correction process, the cultural relics on the screen wall are always under effective restraint and protection, thus effectively preventing the loose structural components of the cultural relics on the screen wall from being damaged or even overturned and collapsed during the tilting correction and reinforcement process. Foundation replacement: artificial excavation is used to form a foundation pit in the existing foundation below the screen wall cultural relic; a pedestal is constructed at the bottom of the foundation pit; a reaction beam is constructed on the side of the existing foundation facing the foundation pit, and the reaction beam is located between the pedestal and the screen wall cultural relic; Foundation cutting: using a cutting machine to cut the existing foundation on both sides of the length direction of the screen wall cultural relic to form side cuts, and cutting on the side of the existing foundation facing the foundation pit to form a lower cut, the lower cut is located below the reaction beam and connected to the side cut; based on this, the side cuts on both sides of the length direction of the screen wall cultural relic can be used to release the connection between the existing foundation below the screen wall cultural relic and the surrounding foundation, and the lower cut forms a structural weak point at the existing foundation below the reaction beam, so that the screen wall cultural relic and the "existing foundation between the side cut and the lower cut" form a system that can rotate around the lower cut; Lifting and tilt correction: by setting a jack between the base and the reaction beam, the screen wall cultural relics are lifted up by the reaction beam to achieve tilt correction of the screen wall cultural relics. Because in the foundation cutting step, the screen wall cultural relics and the "existing foundation between the side cut and the lower cut" form a system that can rotate around the lower cut. During the process of lifting and tilt correction by the jack, the deformation of the existing foundation will occur at the lower cut position, so that the reaction beam, the screen wall cultural relics and the "existing foundation between the side cut and the lower cut" rotate around the lower cut, lift up the screen wall cultural relics, and achieve tilt correction of the screen wall cultural relics; and effectively reduce the lifting force of the jack during the tilt correction process. In this way, it is possible to correct the tilt of the cultural relics on the wall and eliminate the dangerous points of the cultural relics structure; it can also effectively avoid uncontrollable damage that is difficult to repair in the cultural relics building foundation during the correction process (the deformation of the foundation occurs at the lower cut position, not in other uncontrollable parts, and the lower cut can be repaired later by filling with glue). At the same time, it can also avoid the unstable connection between the existing foundation and the surrounding foundations, which makes it difficult to correct the tilt of the cultural relics on the wall, and even the situation where the jack requires too much lifting force, which causes uncontrollable damage that is difficult to repair in the cultural relics building foundation.
[0006] Preferably, a concave step is provided on one side of the existing foundation facing the foundation pit, the reaction beam is arranged at the concave step, and the reaction beam is connected to the step surface of the concave step as a whole. In this way, the reaction beam can be effectively connected to the existing foundation as a whole, and during the jacking process, the reaction beam can stably and reliably transmit the lifting force to the existing foundation, thereby realizing the tilt correction of the cultural relics on the contrast wall.
[0007] As a preferred embodiment, the reaction beam is a cast-in-place reinforced concrete beam, and the steel bars in the reaction beam are embedded in the existing foundation. In this way, it can effectively ensure that the reaction beam is connected to the existing foundation as a whole, and during the jacking process, the reaction beam can stably and reliably transmit the jacking force to the existing foundation to achieve the tilt correction of the contrast wall cultural relics.
[0008] Preferably, a tilt correction protection device is installed in the foundation underpinning step, and the tilt correction protection device includes: The gantry frame includes two left and right columns and a top beam. A vertical screw connected by a thread is provided on the top beam. The lower ends of the two columns are cast in the base, and the reaction beam is located between the two columns. The movable beam is located between the two columns and can slide up and down along the columns. The lower end of the vertical screw is fixedly connected to the movable beam, and the lower end of the vertical screw can be separated from the movable beam by rotating the vertical screw. The movable beam is cast in the top surface of the reaction beam.
[0009] The specific steps of lifting and correcting are as follows: First, a jack is set on the base and the reaction beam; the vertical screw is rotated to separate the lower end of the vertical screw from the movable beam; Second, continue to rotate the vertical screw rod to move the vertical screw rod upward until the distance between the lower end of the vertical screw rod and the top surface of the movable beam reaches the set value; Third, the existing foundation and the screen wall cultural relics located above the lower cut are lifted up by a jack until the top surface of the movable beam abuts against the lower end of the vertical screw rod; Fourth, return to the second step until the tilt of the screen wall artifacts is corrected.
[0010] In the actual process of correcting the tilt of the screen wall cultural relics, there is a problem that due to the negligence of the operators, excessive correction occurs, causing the screen wall cultural relics to tilt in the opposite direction or even fall in the opposite direction. To solve this problem, this solution sets up a correction protection device, which limits the correction angle of the screen wall cultural relics through a vertical screw to avoid excessive correction, which causes the screen wall cultural relics to tilt in the opposite direction or even fall in the opposite direction.
[0011] Furthermore, in the actual process of correcting the tilt of the screen wall cultural relics, there have been cases where the operators did not operate according to the specifications. Specifically, although the actual construction required the installation of a tilt correction protection device, the operators did not install the tilt correction protection device due to not understanding the operating specifications or being lazy in order to save trouble, resulting in excessive tilt correction, causing the screen wall cultural relics to tilt in the opposite direction or even to fall in the opposite direction. To solve this problem, in the foundation replacement step, this solution directly casts the lower ends of the two columns of the gantry into the base, and casts the movable beam into the top surface of the reaction beam, thereby avoiding the subsequent tilt correction process due to the operators not understanding the operating specifications or being lazy in order to save trouble, not installing the tilt correction protection device, resulting in excessive tilt correction, causing the screen wall cultural relics to tilt in the opposite direction or even to fall in the opposite direction.
[0012] Furthermore, in the actual process of correcting the tilt of the screen wall cultural relic, although a tilt correction protection device was installed, the actual correction workers were unclear and did not understand the operating specifications, and operated recklessly (without adjusting the position of the vertical screw), directly controlling the jack to lift up the screen wall cultural relic. However, due to the large distance between the vertical screw and the reaction beam, excessive correction occurred, causing the screen wall cultural relic to tilt in the opposite direction or even fall in the opposite direction. In order to solve this problem, the present invention fixes the lower end of the vertical screw rod with the movable beam, casts the lower ends of the two columns of the gantry in the base, and casts the movable beam in the top surface of the reaction beam. In this way, if the actual tilt correction operator is not clear about and does not understand the operating specifications, and directly controls the jack to work, then, since the reaction beam and the movable beam are restricted on the gantry by the vertical screw rod, the screen wall cultural relics cannot be lifted up by the jack, and the tilt correction fails. Thus, the actual tilt correction operator is forced to understand the operating specifications clearly, so that the actual tilt correction operator can operate according to the operating specifications after understanding the operating specifications clearly, and first rotate the vertical screw rod to make the vertical The lower end of the screw is separated from the movable beam, so that the distance between the lower end of the vertical screw and the top surface of the movable beam is the set value, and then the existing foundation and the screen wall cultural relics located above the lower cut are lifted up by the jack until the top surface of the movable beam rests on the lower end of the vertical screw, and this cycle is repeated to complete the correction of the tilt of the screen wall cultural relics. This avoids the problem that the actual tilt correction operators are not clear about or do not understand the operating specifications, and operate randomly (without adjusting the position of the vertical screw), directly control the work of the jack, and lift up the screen wall cultural relics, which may lead to excessive tilt correction due to the large distance between the vertical screw and the reaction beam, causing the screen wall cultural relics to tilt in the opposite direction or even fall in the opposite direction.
[0013] Preferably, the lower slit is close to the reaction beam.
[0014] As a preferred embodiment, the specific steps of erecting the protection frame are as follows: Steel pipe protection frames are set up on both sides of the screen wall cultural relics in the thickness direction, and wooden fences are arranged between the steel pipe protection frames and the screen wall. The steel pipe protection frames include a number of transverse supporting steel pipes, and one end of the transverse supporting steel pipes is pressed against the wooden fence through a flexible support. In this way, during the process of correcting the tilt of the screen wall cultural relics, the screen wall cultural relics can be protected by the wooden fence and the flexible support, and the screen wall cultural relics can be corrected by the elastic deformation of the flexible support.
[0015] Preferably, the reaction beam is a cast-in-place reinforced concrete beam, and a grouting pipe is pre-buried in the reaction beam during the construction of the reaction beam, and the grouting pipe runs through the upper and lower surfaces of the reaction beam. In this way, after backfilling the foundation pit with graded dense material (such as graded crushed stone), grouting can be injected into the graded dense material below the reaction beam through the grouting pipe until the graded dense material is dense after grouting, thereby ensuring the stability and reliability of the foundation after restoration.
[0016] As a preference, the method further comprises the following steps: Crack repair: Use grouting material to repair the lower cut seam and side cut seam; After the foundation is restored and the tilt of the screen wall cultural relic is corrected, support columns are constructed between the base next to the jack and the reaction beam; then, the foundation pit is backfilled.
[0017] Preferably, the method further includes the following steps: removing the protection frame, and after the foundation restoration construction is completed, gradually removing the protection frame from top to bottom.
[0018] The beneficial effects of the present invention are: not only can the tilt of the screen wall cultural relics be corrected and the dangerous points of the cultural relic structure be eliminated; but also the problems of damage to the cultural relic building, uncontrollable damage to the foundation of the cultural relic building, and overturning and collapse of the screen wall cultural relics can be effectively avoided during the correction process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a partial structural schematic diagram of a method for correcting the tilt of a screen wall cultural relic of the present invention after the protection frame is erected.
[0020] Figure 2 It is a cross-sectional structural schematic diagram of an implementation method of the present invention in the process of lifting and correcting the tilt of a screen wall cultural relic.
[0021] Figure 3 It is a partial top view of a method for correcting the tilt of a screen wall cultural relic of the present invention.
[0022] Figure 4 It is a cross-sectional structural schematic diagram of another implementation method in the lifting and tilt correction process of a screen wall cultural relic correction method of the present invention.
[0023] In the figure: Screen wall cultural relics 1, existing foundation 1.1; Steel pipe protection frame 2, wooden fence 2.1, flexible support 2.2; Foundation pit 3; Base 4; Reaction beam 5; Jack 6; Lower slit 7.1, side slit 7.2; Grouting pipe 8; The tilt correction protection device 9, the column 9.1, the top beam 9.2, the movable beam 9.3, and the vertical screw rod 9.4. DETAILED DESCRIPTION
[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Specific embodiment 1, a method for correcting the tilt of a screen wall cultural relic, comprising the following steps: Protection frame erection, such as Figure 1As shown, the screen wall cultural relic 1 is protected; based on this, in the subsequent lifting and tilt correction process, the screen wall cultural relic 1 is always in an effective restraint and protection state, thereby effectively preventing the loose structural components of the screen wall cultural relic 1 from being damaged or even overturned and collapsed during the tilt correction and reinforcement process.
[0025] Basic underpinning, such as Figure 2 As shown, a foundation pit 3 is formed in the existing foundation 1.1 below the screen wall cultural relic 1 by artificial excavation; a base 4 is constructed at the bottom of the foundation pit 3; and a reaction beam 5 is constructed on the side of the existing foundation 1.1 facing the foundation pit 3, and the reaction beam 5 is located between the base 4 and the screen wall cultural relic 1.
[0026] Basic cutting, such as Figure 2 , Figure 3 As shown, a cutting machine is used to cut the existing foundation 1.1 on both sides of the length direction of the screen wall cultural relic 1 to form side slits 7.2; the side slits 7.2 extend from top to bottom and are connected to the foundation pit 3. A lower slit 7.1 is cut on the side of the existing foundation 1.1 facing the foundation pit 3, and the lower slit 7.1 extends along the length direction of the screen wall cultural relic 1. The lower slit 7.1 is located below the reaction beam 5 and connected to the side slit 7.2; based on this, the connection between the existing foundation 1.1 below the screen wall cultural relic 1 and the surrounding foundation can be released through the side slits 7.2 on both sides of the length direction of the screen wall cultural relic 1, and a structural weak part is formed at the existing foundation 1.1 below the reaction beam 5 through the lower slit 7.1, so that the screen wall cultural relic 1 and the "existing foundation 1.1 between the side slits 7.2 and the lower slit 7.1" form a system that can rotate around the lower slit 7.1.
[0027] Lifting and tilt correction, such as Figure 2As shown, by arranging a jack 6 between the base 4 and the reaction beam 5, the screen wall cultural relic 1 is lifted up by the reaction beam 5, so as to correct the tilt of the screen wall cultural relic 1. There are one or more jacks 6, and the multiple jacks 6 are sequentially distributed along the length direction of the screen wall cultural relic 1. Due to the foundation cutting step, the screen wall cultural relic 1 and the "existing foundation 1.1 between the side cut 7.2 and the lower cut 7.1" form a rotation system around the lower cut 7.1. During the lifting and tilt correction process of the jack 6, the deformation of the existing foundation 1.1 will occur at the position of the lower cut 7.1 (the deformation will not occur in other uncontrollable parts, and the lower cut 7.1 can be repaired by filling glue later), so that the reaction beam 5, the screen wall cultural relic 1 and the "existing foundation 1.1 between the side cut 7.2 and the lower cut 7.1" rotate around the lower cut 7.1, and the screen wall cultural relic 1 is lifted up to correct the tilt of the screen wall cultural relic 1; and the lifting force of the jack 6 during the tilt correction process is effectively reduced. In this way, it is possible to correct the tilt of the cultural relic 1 and eliminate the dangerous points of the cultural relic structure; it is also possible to effectively avoid uncontrolled damage to the cultural relic building foundation that is difficult to repair during the correction process (the deformation of the foundation occurs at the lower cut 7.1 position, not at other uncontrollable positions, and the lower cut 7.1 can be repaired later by filling with glue). At the same time, it is also possible to avoid the instability of the connection between the existing foundation 1.1 and the surrounding foundations, which makes it difficult to correct the tilt of the cultural relic 1; and even the situation where the jack 6 requires too much lifting force, which causes uncontrollable damage to the cultural relic building foundation that is difficult to repair.
[0028] Crack repair: grouting material is used to repair the lower cut seam 7.1 and the side cut seam 7.2.
[0029] After the foundation is restored and the tilt of the screen wall cultural relic 1 is corrected, a support column is constructed between the base 4 and the reaction beam 5 next to the jack 6; then, the foundation pit 3 is backfilled.
[0030] The protective frame will be removed gradually from top to bottom after the foundation restoration construction is completed.
[0031] Specifically, the specific steps for setting up the protection frame are as follows: Figure 1 As shown, steel pipe protection frames 2 are set up on both sides of the thickness direction of the screen wall cultural relic 1. Wooden fences 2.1 are arranged between the steel pipe protection frame 2 and the screen wall. The steel pipe protection frame 2 includes a plurality of transverse supporting steel pipes. One end of the transverse supporting steel pipe is pressed against the wooden fence 2.1 through a flexible support 2.2. The flexible support 2.2 is formed by one or more combinations of foam boards, sponge pads, and elastic rubber blocks. In this way, in the process of correcting the tilt of the screen wall cultural relic 1, the screen wall cultural relic 1 can be protected by the wooden fence 2.1 and the flexible support 2.2, and the screen wall cultural relic 1 can be corrected by the elastic deformation of the flexible support 2.2.
[0032] In addition, an adjustable inclined cable can be installed on the protection frame and fixed to the ground to further prevent the screen wall cultural relic 1 from overturning and collapsing. In addition, during the lifting and tilt correction process, the transverse supporting steel pipe and the flexible support 2.2 can be adjusted as needed to ensure that the screen wall cultural relic 1 is always in an effective restraint and protection state.
[0033] In the basic underpinning step, if Figure 2 As shown, in the process of manually excavating the foundation pit 3 in the existing foundation 1.1 below the screen wall cultural relic 1, the slope protection concrete should be made as the excavation progresses. If necessary, the upper slope protection concrete should be excavated only when it reaches the designed strength. During the excavation process, the settlement, inclination and deformation monitoring of adjacent buildings and protection frames should be closely observed.
[0034] In this embodiment, the base 4 is a cast-in-place reinforced concrete base 4. The reaction beam 5 is a cast-in-place reinforced concrete beam.
[0035] like Figure 2 As shown, the steel bars in the reaction beam 5 are embedded in the existing foundation 1.1. Specifically, the steel bars in the reaction beam 5 include a steel cage composed of a plurality of transverse bars, longitudinal bars and tie bars, wherein the transverse bars are along the length direction of the screen wall cultural relic 1, and the longitudinal bars are embedded in the existing foundation 1.1. In this way, it can be effectively ensured that the reaction beam 5 and the existing foundation 1.1 are connected as one, and during the tilt correction process of the jack 6, the reaction beam 5 can stably and reliably transmit the jacking force to the existing foundation 1.1, thereby correcting the tilt of the screen wall cultural relic 1.
[0036] In the foundation restoration step, the backfill of the foundation pit 3 should be backfilled with reasonably graded dense materials (such as graded crushed stone), and then grouting should be performed until it is dense.
[0037] Further, such as Figure 2 As shown, during the construction of the reaction beam 5, a grouting pipe 8 is pre-buried in the reaction beam 5, and the grouting pipe 8 penetrates the upper and lower surfaces of the reaction beam 5. In this way, after backfilling the foundation pit 3 with graded dense material (such as graded crushed stone), grouting can be injected into the graded dense material below the reaction beam 5 through the grouting pipe until the graded dense material is dense after grouting, thereby ensuring the stability and reliability of the foundation after restoration.
[0038] Further, such as Figure 2 As shown, a concave step is provided on one side of the existing foundation 1.1 facing the foundation pit 3, and the step surface of the concave step is distributed downward. The reaction beam 5 is arranged at the concave step, and the reaction beam 5 is connected to the step surface of the concave step as a whole. In this way, the reaction beam 5 can be effectively connected to the existing foundation 1.1 as a whole, and during the tilt correction process of the jack 6, the reaction beam 5 can stably and reliably transmit the jacking force to the existing foundation 1.1, so as to correct the tilt of the comparison wall cultural relic 1.
[0039] Further, such as Figure 2As shown, the lower slit 7.1 is close to the reaction beam 5. In this way, during the process of lifting and correcting the tilt by the jack 6, the deformation of the existing foundation 1.1 will occur at the position of the lower slit 7.1 (the deformation will not occur in other uncontrollable parts, and the lower slit 7.1 can be repaired by filling with glue later), so that the reaction beam 5, the screen wall cultural relic 1 and the "existing foundation 1.1 between the side slit 7.2 and the lower slit 7.1" rotate around the lower slit 7.1, lift up the screen wall cultural relic 1, and correct the tilt of the screen wall cultural relic 1.
[0040] Specific embodiment 2, as Figure 1 , Figure 2 As shown, a method for correcting the tilt of a screen wall cultural relic comprises the following steps: Protection frame erection, such as Figure 1 As shown, the screen wall cultural relic 1 is protected; based on this, in the subsequent lifting and tilt correction process, the screen wall cultural relic 1 is always in an effective restraint and protection state, thereby effectively preventing the loose structural components of the screen wall cultural relic 1 from being damaged or even overturned and collapsed during the tilt correction and reinforcement process.
[0041] Basic underpinning, such as Figure 4 As shown, a foundation pit 3 is formed in the existing foundation 1.1 below the screen wall cultural relic 1 by artificial excavation. A tilt correction protection device 9 is installed, and the tilt correction protection device 9 includes a gantry and a movable beam 9.3. The gantry includes two left and right columns 9.1 and a top beam 9.2. A vertical screw rod 9.4 connected by a thread is provided on the top beam 9.2. A handle for driving the vertical screw rod 9.4 to rotate is provided at the upper end of the vertical screw rod 9.4. The movable beam 9.3 is located between the two columns 9.1 and can slide up and down along the columns 9.1. Specifically, a slide groove that cooperates with the columns 9.1 is provided at both ends of the movable beam 9.3. The lower end of the vertical screw rod 9.4 is fixedly connected to the movable beam 9.3, and the lower end of the vertical screw rod 9.4 can be separated from the movable beam 9.3 by rotating the vertical screw rod 9.4. In this embodiment, the lower end of the vertical screw rod 9.4 is fixedly connected to the movable beam 9.3 by an adhesive, or the lower end of the vertical screw rod 9.4 is fixedly connected to the movable beam 9.3 by 1-3 welding points, so that the lower end of the vertical screw rod 9.4 can be separated from the movable beam 9.3 by rotating the vertical screw rod 9.4. The vertical screw rod 9.4 is one or more, and the multiple vertical screw rods 9.4 are sequentially distributed along the length direction of the screen wall cultural relic 1. The base 4 is constructed at the bottom of the foundation pit 3. In this embodiment, the base 4 is a cast-in-place reinforced concrete base 4, and the lower ends of the two columns 9.1 are cast in the base 4.
[0042] A reaction beam 5 is constructed on the side of the existing foundation 1.1 facing the foundation pit 3, and the reaction beam 5 is located between the base 4 and the screen wall cultural relic 1. In this embodiment, the reaction beam 5 is a cast-in-place reinforced concrete beam, and the movable beam 9.3 is cast in the top surface of the reaction beam 5. The top surface of the movable beam 9.3 is exposed outside the reaction beam 5. The reaction beam 5 is located between the two columns 9.1. In this embodiment, the movable beam 9.3 is welded to the steel bars in the reaction beam 5.
[0043] Basic cutting, such as Figure 3 , Figure 4 As shown, a cutting machine is used to cut the existing foundation 1.1 on both sides of the length direction of the screen wall cultural relic 1 to form side slits 7.2; the side slits 7.2 extend from top to bottom and are connected to the foundation pit 3. A lower slit 7.1 is cut on the side of the existing foundation 1.1 facing the foundation pit 3, and the lower slit 7.1 extends along the length direction of the screen wall cultural relic 1. The lower slit 7.1 is located below the reaction beam 5 and connected to the side slit 7.2; based on this, the connection between the existing foundation 1.1 below the screen wall cultural relic 1 and the surrounding foundation can be released through the side slits 7.2 on both sides of the length direction of the screen wall cultural relic 1, and a structural weak part is formed at the existing foundation 1.1 below the reaction beam 5 through the lower slit 7.1, so that the screen wall cultural relic 1 and the "existing foundation 1.1 between the side slits 7.2 and the lower slit 7.1" form a system that can rotate around the lower slit 7.1.
[0044] Lifting and tilt correction, such as Figure 4 As shown, by arranging a jack 6 between the base 4 and the reaction beam 5, the screen wall cultural relic 1 is lifted up by the reaction beam 5 to correct the tilt of the screen wall cultural relic 1. In this embodiment, the specific steps of lifting and correcting the tilt are as follows: First, jacks 6 are arranged on the base 4 and the reaction beam 5. There are one or more jacks 6, and the jacks 6 are sequentially distributed along the length direction of the screen wall cultural relic 1. The vertical screw rod 9.4 is rotated to separate the lower end of the vertical screw rod 9.4 from the movable beam 9.3; Second, continue to rotate the vertical screw rod 9.4 to move the vertical screw rod 9.4 upward until the distance between the lower end of the vertical screw rod 9.4 and the top surface of the movable beam 9.3 reaches the set value; Third, the existing foundation 1.1 and the screen wall cultural relic 1 located above the lower notch 7.1 are lifted up by the jack 6 until the top surface of the movable beam 9.3 abuts against the lower end of the vertical screw rod 9.4; Fourth, return to the second step until the tilt of the screen wall cultural relic 1 is corrected.
[0045] In this embodiment, after the tilt of the screen wall cultural relic 1 is corrected, the movable beam 9.3 is welded to the column.
[0046] Crack repair: grouting material is used to repair the lower cut seam 7.1 and the side cut seam 7.2.
[0047] After the foundation is restored and the tilt of the screen wall cultural relic 1 is corrected, a support column is constructed between the base 4 and the reaction beam 5 next to the jack 6; then, the foundation pit 3 is backfilled.
[0048] The protective frame will be removed gradually from top to bottom after the foundation restoration construction is completed.
[0049] In a method for correcting the inclination of a screen wall cultural relic in the present embodiment, due to the foundation cutting step, the screen wall cultural relic 1 and the "existing foundation 1.1 between the side cut 7.2 and the lower cut 7.1" form a system that can rotate around the lower cut 7.1. During the lifting and correcting process of the jack 6, the deformation of the existing foundation 1.1 will occur at the position of the lower cut 7.1 (the deformation will not occur in other uncontrollable parts, and the lower cut 7.1 can be subsequently repaired by filling with glue), so that the reaction beam 5, the screen wall cultural relic 1 and the "existing foundation 1.1 between the side cut 7.2 and the lower cut 7.1" are rotated around the lower cut 7.1, the screen wall cultural relic 1 is lifted up, and the inclination of the screen wall cultural relic 1 is corrected; and the lifting force of the jack 6 during the correcting process is effectively reduced. In this way, it is possible to correct the tilt of the cultural relic 1 and eliminate the dangerous points of the cultural relic structure; it is also possible to effectively avoid uncontrolled damage to the cultural relic building foundation that is difficult to repair during the correction process (the deformation of the foundation occurs at the lower cut 7.1 position, not at other uncontrollable positions, and the lower cut 7.1 can be repaired later by filling with glue). At the same time, it is also possible to avoid the instability of the connection between the existing foundation 1.1 and the surrounding foundations, which makes it difficult to correct the tilt of the cultural relic 1; and even the situation where the jack 6 requires too much lifting force, which causes uncontrollable damage to the cultural relic building foundation that is difficult to repair.
[0050] On the other hand, in the actual process of correcting the tilt of the screen wall cultural relic 1, there is a problem that due to negligence of the operator, the screen wall cultural relic 1 tilts in the opposite direction or even falls in the opposite direction. To solve this problem, the present solution is provided with a tilt correction protection device 9, which limits the tilt correction angle of the screen wall cultural relic 1 through a vertical screw 9.4 to avoid excessive tilt correction, which causes the screen wall cultural relic 1 to tilt in the opposite direction or even fall in the opposite direction.
[0051] Furthermore, in the actual process of correcting the tilt of the screen wall cultural relic 1, there have been cases where the operators did not operate according to the specifications. Specifically, although the actual construction requires the use of the tilt correction protection device 9, the operators did not install the tilt correction protection device 9 due to not understanding the operating specifications or being lazy in order to save trouble, resulting in excessive tilt correction, causing the screen wall cultural relic 1 to tilt in the opposite direction or even to fall in the opposite direction. To solve this problem, in the foundation replacement step, this solution directly casts the lower ends of the two columns 9.1 of the gantry into the base 4, and casts the movable beam 9.3 into the top surface of the reaction beam 5, thereby avoiding the subsequent tilt correction process due to the operators not understanding the operating specifications or being lazy in order to save trouble, not installing the tilt correction protection device 9, resulting in excessive tilt correction, causing the screen wall cultural relic 1 to tilt in the opposite direction or even to fall in the opposite direction.
[0052] Furthermore, in the actual process of correcting the tilt of the screen wall cultural relic 1, although the tilt correction protection device 9 was installed, the actual tilt correction operator was not clear about and did not understand the operating specifications, and operated randomly (without adjusting the position of the vertical screw 9.4), directly controlling the jack 6 to lift up the screen wall cultural relic 1, and the large distance between the vertical screw 9.4 and the reaction beam 5 caused excessive tilt correction, causing the screen wall cultural relic 1 to tilt in the opposite direction or even fall in the opposite direction. In order to solve this problem, the present invention fixes the lower end of the vertical screw rod 9.4 with the movable beam 9.3, casts the lower ends of the two upright columns 9.1 of the gantry in the base 4, and casts the movable beam 9.3 in the top surface of the reaction beam 5. In this way, if the actual tilt correction operator is not clear about and does not understand the operating specifications, and directly controls the jack 6 to work, at this time, since the reaction beam 5 and the movable beam 9.3 are restricted on the gantry by the vertical screw rod 9.4, the screen wall cultural relic 1 cannot be lifted up by the jack 6, and the tilt correction fails. Thus, the actual tilt correction operator is forced to understand the operating specifications clearly, so that the actual tilt correction operator can operate according to the operating specifications after understanding the operating specifications clearly, and first rotate the vertical screw rod 9.4 to make the vertical screw rod 9.4 After the lower end is separated from the movable beam 9.3, so that the distance between the lower end of the vertical screw rod 9.4 and the top surface of the movable beam 9.3 is the set value, the existing foundation 1.1 and the screen wall cultural relic 1 located above the lower slit 7.1 are lifted up by the jack 6, until the top surface of the movable beam 9.3 abuts against the lower end of the vertical screw rod 9.4, and the cycle is repeated to complete the correction of the tilt of the screen wall cultural relic 1; thereby avoiding the problem that the actual tilt correction operator is not clear about or does not understand the operating specifications, operates randomly (does not adjust the position of the vertical screw rod 9.4), directly controls the jack 6 to work, and lifts up the screen wall cultural relic 1, which causes excessive tilt correction due to the excessive distance between the vertical screw rod 9.4 and the reaction beam 5, causing the screen wall cultural relic 1 to tilt in the opposite direction or even fall in the opposite direction.
[0053] Specifically, the specific steps for setting up the protection frame are as follows: Figure 1As shown, steel pipe protection frames 2 are set up on both sides of the thickness direction of the screen wall cultural relic 1. Wooden fences 2.1 are arranged between the steel pipe protection frame 2 and the screen wall. The steel pipe protection frame 2 includes a plurality of transverse supporting steel pipes. One end of the transverse supporting steel pipe is pressed against the wooden fence 2.1 through a flexible support 2.2. The flexible support 2.2 is formed by one or more combinations of foam boards, sponge pads, and elastic rubber blocks. In this way, in the process of correcting the tilt of the screen wall cultural relic 1, the screen wall cultural relic 1 can be protected by the wooden fence 2.1 and the flexible support 2.2, and the screen wall cultural relic 1 can be corrected by the elastic deformation of the flexible support 2.2.
[0054] In addition, an adjustable inclined cable can be installed on the protection frame and fixed to the ground to further prevent the screen wall cultural relic 1 from overturning and collapsing. In addition, during the lifting and tilt correction process, the transverse supporting steel pipe and the flexible support 2.2 can be adjusted as needed to ensure that the screen wall cultural relic 1 is always in an effective restraint and protection state.
[0055] In the basic underpinning step, if Figure 4 As shown, in the process of manually excavating the foundation pit 3 in the existing foundation 1.1 below the screen wall cultural relic 1, the slope protection concrete should be made as the excavation progresses. If necessary, the upper slope protection concrete should be excavated only when it reaches the designed strength. During the excavation process, the settlement, inclination and deformation monitoring of adjacent buildings and protection frames should be closely observed.
[0056] like Figure 4 As shown, the steel bars in the reaction beam 5 are embedded in the existing foundation 1.1. Specifically, the steel bars in the reaction beam 5 include a steel cage composed of a plurality of transverse bars, longitudinal bars and tie bars, wherein the transverse bars are along the length direction of the screen wall cultural relic 1, and the longitudinal bars are embedded in the existing foundation 1.1. In this way, it can be effectively ensured that the reaction beam 5 and the existing foundation 1.1 are connected as one, and during the tilt correction process of the jack 6, the reaction beam 5 can stably and reliably transmit the jacking force to the existing foundation 1.1, thereby correcting the tilt of the screen wall cultural relic 1.
[0057] In the foundation restoration step, the backfill of the foundation pit 3 should be backfilled with reasonably graded dense materials (such as graded crushed stone), and then grouting should be performed until it is dense.
[0058] Further, such as Figure 4 As shown, during the construction of the reaction beam 5, a grouting pipe 8 is pre-buried in the reaction beam 5, and the grouting pipe 8 penetrates the upper and lower surfaces of the reaction beam 5. In this way, after backfilling the foundation pit 3 with graded dense material (such as graded crushed stone), grouting can be injected into the graded dense material below the reaction beam 5 through the grouting pipe until the graded dense material is dense after grouting, thereby ensuring the stability and reliability of the foundation after restoration.
[0059] Furthermore, a concave step is provided on one side of the existing foundation 1.1 facing the foundation pit 3, and the step surface of the concave step is distributed downward. The reaction beam 5 is arranged at the concave step, and the reaction beam 5 is connected to the step surface of the concave step as a whole. In this way, the reaction beam 5 can be effectively connected to the existing foundation 1.1 as a whole, and during the tilt correction process of the jack 6, the reaction beam 5 can stably and reliably transmit the jacking force to the existing foundation 1.1, so as to correct the tilt of the comparison wall cultural relic 1.
[0060] Furthermore, the lower slit 7.1 is close to the reaction beam 5. In this way, during the process of lifting and correcting the tilt by the jack 6, the deformation of the existing foundation 1.1 will occur at the position of the lower slit 7.1 (the deformation will not occur at other uncontrollable positions, and the lower slit 7.1 can be repaired by filling with glue later), so that the reaction beam 5, the screen wall cultural relic 1 and the "existing foundation 1.1 between the side slit 7.2 and the lower slit 7.1" rotate around the lower slit 7.1, lift up the screen wall cultural relic 1, and correct the tilt of the screen wall cultural relic 1.
[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A method for correcting the tilt of a screen wall cultural relic, characterized in that: The following steps are involved: The protection frame was set up to protect the cultural relics on the wall; Foundation replacement: artificial excavation is used to form a foundation pit in the existing foundation below the screen wall cultural relic; a pedestal is constructed at the bottom of the foundation pit; a reaction beam is constructed on the side of the existing foundation facing the foundation pit, and the reaction beam is located between the pedestal and the screen wall cultural relic; Foundation cutting: using a cutting machine to cut the existing foundation on both sides of the length direction of the screen wall cultural relic to form side cuts, and cutting on the side of the existing foundation facing the foundation pit to form a lower cut, the lower cut is located below the reaction beam and connected to the side cut; To correct the tilt, a jack is set between the base and the reaction beam, and the cultural relics on the screen wall are lifted up through the reaction beam to correct the tilt of the cultural relics on the screen wall.
2. The method for correcting the tilt of a screen wall cultural relic according to claim 1 is characterized in that: A concave step is provided on one side of the existing foundation facing the foundation pit, the reaction beam is arranged at the concave step, and the reaction beam is connected to the step surface of the concave step as a whole.
3. The method for correcting the tilt of a screen wall cultural relic according to claim 1, characterized in that: The reaction beam is a cast-in-place reinforced concrete beam, and the steel bars in the reaction beam are implanted in the existing foundation.
4. A method for correcting the tilt of a screen wall cultural relic according to claim 1, 2 or 3, characterized in that: During the foundation replacement step, a tilt-correcting protection device is installed. The tilt-correcting protection device includes: The gantry frame includes two left and right columns and a top beam. A vertical screw connected by a thread is provided on the top beam. The lower ends of the two columns are cast in the base, and the reaction beam is located between the two columns. The movable beam is located between the two columns and can slide up and down along the columns. The lower end of the vertical screw is fixedly connected to the movable beam, and the lower end of the vertical screw can be separated from the movable beam by rotating the vertical screw. The movable beam is cast in the top surface of the reaction beam.
5. The method for correcting the tilt of a screen wall cultural relic according to claim 4 is characterized in that: The specific steps of lifting and correcting are as follows: First, a jack is set on the base and the reaction beam; the vertical screw is rotated to separate the lower end of the vertical screw from the movable beam; Second, continue to rotate the vertical screw rod to move the vertical screw rod upward until the distance between the lower end of the vertical screw rod and the top surface of the movable beam reaches the set value; Third, the existing foundation and the screen wall cultural relics located above the lower cut are lifted up by a jack until the top surface of the movable beam abuts against the lower end of the vertical screw rod; Fourth, return to the second step until the tilt of the screen wall artifacts is corrected.
6. A method for correcting the tilt of a screen wall cultural relic according to claim 1, 2 or 3, characterized in that: The lower slit is close to the reaction beam.
7. A method for correcting the tilt of a screen wall cultural relic according to claim 1, 2 or 3, characterized in that: The specific steps of erecting the protection frame are as follows: Steel pipe protection frames are set up on both sides of the screen wall cultural relics in the thickness direction, and wooden fences are arranged between the steel pipe protection frames and the screen wall. The steel pipe protection frames include several transverse supporting steel pipes, one end of which is pressed against the wooden fence through a flexible support.
8. A method for correcting the tilt of a screen wall cultural relic according to claim 1, 2 or 3, characterized in that: The reaction beam is a cast-in-place reinforced concrete beam. During the construction of the reaction beam, a grouting pipe is pre-buried in the reaction beam, and the grouting pipe runs through the upper and lower surfaces of the reaction beam.
9. A method for correcting the tilt of a screen wall cultural relic according to claim 1, 2 or 3, characterized in that: The following steps are also included: Crack repair: Use grouting material to repair the lower cut seam and side cut seam; After the foundation is restored and the tilt of the screen wall cultural relic is corrected, support columns are constructed between the base next to the jack and the reaction beam; then, the foundation pit is backfilled.
10. The method for correcting the tilt of a screen wall cultural relic according to claim 9, characterized in that: It also includes the following steps: removing the protective frame. After the foundation restoration construction is completed, the protective frame will be gradually removed from top to bottom.