Low stress and differential cutting replacement technology for non-protection support foundation of large stone cultural relics

Abstract

The application discloses a low-stress and differential-cut replacement technology for a non-protective support foundation of a large stone cultural relic, which comprises the following steps: 1) cutting a non-protective support foundation (20) of a stone cultural relic (1) by using a diamond wire saw (10); 2) inserting a steel plate (30) into a cutting gap in time to fill the gap, and supporting the steel plate protruding from the foundation gap by using a jack (40) to reduce the stress difference of the foundation on both sides of the diamond wire saw; 3) during the cutting process, repeating step 2) to set new steel plates and jacks with the gradual expansion of the cutting gap until the cutting of the whole non-protective support foundation (20) is completed; 4) lifting the whole stone cultural relic by stages by using a jack group; and 5) replacing the foundation, then lowering the whole stone cultural relic by stages by using the jack group, and completing the installation of a new foundation of the stone cultural relic.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cultural relic protection, and in particular to a low-stress differential cutting replacement technology for a large stone cultural relic non-protective support foundation. BACKGROUND

[0002] In the process of repairing and moving a large stone cultural relic, the cutting replacement of the non-protective support foundation is generally involved. Generally, the cutting replacement technology for the structure uses cutting technologies such as flame cutting, plasma cutting, water cutting, and laser cutting, followed by gantry cranes, hoists, and cranes for lifting, and finally replacement. However, these technical solutions have the following defects:

[0003] 1) Flame cutting and plasma cutting: Flame cutting is the original traditional cutting method. The thermal distortion during flame cutting and plasma cutting is very large, and the local expansion cracks due to heat damage the cultural relics. The cutting produces vibration and is very slow, which seriously affects the stability of the large stone cultural relic.

[0004] 2) Water cutting: The cost is high, and a large amount of water and sand is needed. It pollutes the production environment very much and is difficult to achieve in ancient buildings, with high maintenance cost.

[0005] 3) Laser cutting: The machine tool is large in size, and the height of the laser cutting instrument is not enough. Similarly, the high temperature of the laser will damage the stone cultural relics.

[0006] 4) Gantry crane, hoist, and crane: The flexibility of the lifting rope is too large, which causes vibration affecting the stability of the cultural relic structure.

[0007] Therefore, new technologies and methods are needed to at least partially solve the defects in the prior art. SUMMARY

[0008] The present application mainly aims at the vibration, stress concentration, and overturning that may be caused by cutting and moving operations in the process of replacing the non-protective support foundation of a large stone cultural relic, thereby causing irreversible permanent damage to the cultural relic. A low-stress differential cutting replacement technology for a large stone cultural relic non-protective support foundation is proposed, which can safely and efficiently complete the low-stress differential cutting, jacking, and replacement of the non-protective support foundation of the stone cultural relic.

[0009] More specifically, according to an aspect of the present application, a low-stress differential cutting replacement technology for a large stone cultural relic non-protective support foundation is provided, characterized by comprising:

[0010] 1) using a diamond wire saw (10) to cut the non-protective support foundation (20) of the stone cultural relic (1);

[0011] 2) timely inserting steel plates (30) into the cutting gap to fill the gap, while using jacks (40) to support the steel plates protruding from the foundation gap to reduce the stress difference on both sides of the diamond wire saw;

[0012] 3) during the cutting process, repeating step 2) to set new steel plates and jacks as the cutting gap gradually expands until the entire unprotected supporting foundation (20) is cut;

[0013] 4) using a group of jacks to gradually jack up the entire stone relic; and

[0014] 5) replacing the foundation, then using a group of jacks to gradually lower the entire stone relic to complete the installation of the new foundation for the stone relic.

[0015] According to the embodiments of the present application, the diamond wire saw (10) is a water-cooled diamond track or an electric rope saw cutting machine.

[0016] According to the embodiments of the present application, the diamond wire saw (10) is an intelligent remote control electric rope saw machine.

[0017] According to the embodiments of the present application, the jack is a separate hydraulic jack.

[0018] According to the embodiments of the present application, step 2) further includes inserting shims (50) into the cutting gap to further balance the stress difference.

[0019] According to the embodiments of the present application, in step 4), the jacking displacement of each jack is dynamically adjusted to ensure that the foundation remains level after each jacking to prevent damage to the stone relic.

[0020] According to the embodiments of the present application, the large stone relic unprotected supporting foundation low stress difference cutting replacement technology further includes, before step 1), using a fixing device (60) to fix the stone relic (1) above the foundation.

[0021] According to the embodiments of the present application, the new foundation is a vibration isolation device.

[0022] The invention carries out basic low-noise cutting by diamond wire saw, simultaneously uses gaskets, steel plates and jacks to support the cutting surface, reduces the stress difference of the two sides of the diamond wire saw, and ensures the stability of the support foundation during cutting; then uses the jack group to lift the stone cultural relics in stages, and dynamically adjusts the lifting displacement of each jack at each stage according to the lifting result of the previous stage, so as to ensure that the support foundation remains horizontal during each lifting process and prevent the stone cultural relics from being damaged; finally, the foundation is quickly replaced, and then the stone cultural relics are lowered in stages to complete the installation of the new foundation of the large stone cultural relics. The technology can safely and efficiently complete the low-stress-difference cutting replacement of the non-protective support foundation of large stone cultural relics by completing the low-noise cutting of the non-protective support foundation by diamond wire saw, and simultaneously using gaskets, jacks and other measures to assist the support of the foundation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a flowchart of the large stone cultural relics non-protective support foundation low-stress-difference cutting replacement method according to the embodiment of the invention;

[0024] Figure 2 FIG. 2 is a cutting diagram of the large stone cultural relics non-protective support foundation low-stress-difference cutting replacement method according to the embodiment of the invention; and

[0025] Figure 3 FIG. 3 is a lifting diagram of the large stone cultural relics non-protective support foundation low-stress-difference cutting replacement method according to the embodiment of the invention. DETAILED DESCRIPTION

[0026] The above and other objects, advantages and features of the present invention will become more apparent from the following detailed description of specific embodiments thereof, when taken in conjunction with the accompanying drawings.

[0027] Figure 1 FIG. 1 is a flowchart of the large stone cultural relics non-protective support foundation low-stress-difference cutting replacement method according to the embodiment of the invention; Figure 2 FIG. 2 is a cutting diagram of the large stone cultural relics non-protective support foundation low-stress-difference cutting replacement method according to the embodiment of the invention; and Figure 3 FIG. 3 is a lifting diagram of the large stone cultural relics non-protective support foundation low-stress-difference cutting replacement method according to the embodiment of the invention. The large stone cultural relics non-protective support foundation low-stress-difference cutting replacement method according to the embodiment of the invention will be further described in detail below in conjunction with the drawings.

[0028] First, before the cutting, the stone historical relic (1) can be protected and fixed to prevent accidents during the cutting. For example, a protective cover can be set on the foundation 20, and then the protective cover is fixed by the fixing device 60.

[0029] Then, the non-protected supporting foundation (20) of the stone historical relic (1) is cut by using a diamond wire saw (10). For example, the diamond wire saw (10) can be a water-cooled diamond track or an electric wire saw cutting machine, and the appropriate size of the diamond wire saw can be selected according to actual needs. These machines have high degree of automation, can be intelligently remotely controlled, and can be remotely controlled to cut, and the high-speed rotating "diamond" member can efficiently cut the stone at high speed, the cutting speed is fast, the cutting is straight, the noise is small, and there is no vibration, thereby ensuring the stability of the foundation structure during the cutting. In addition, the high-speed rotating diamond string rope of the diamond wire saw machine is cooled by water and carries away the grinding debris, so that the construction process is basically dust-free and environmentally friendly.

[0030] During the cutting, a cutting gap is generated, and then a steel plate (30) is inserted into the cutting gap in time to fill the gap to ensure the stability of the foundation. If necessary, a gasket (50) can be inserted into the gap to further balance the stress difference. In the direction intersecting the cutting direction, the size of the inserted steel plate (30) should be larger than the size of the foundation 20, so that the steel plate (30) extends out of the cutting gap. Then, the steel plate protruding from the foundation gap is supported at both ends by using a jack (40), such as a split hydraulic jack, to reduce or eliminate the stress difference of the diamond wire saw on both sides of the foundation.

[0031] As the cutting proceeds, the cutting gap gradually increases, and new steel plates / gaskets can be further inserted and supported by new jacks. That is, the above steps are repeated until the cutting of the entire non-protected supporting foundation (20) is completed. After the cutting is completed, a plurality of steel plates / gaskets and a plurality of jacks (40) are filled in the gap, thereby ensuring the stability of the supporting foundation during the cutting.

[0032] Then, the stone historical relic is lifted by the jack group in stages. During the lifting, the lifting displacement of each jack is dynamically adjusted to ensure that the foundation remains horizontal after each lifting.

[0033] After the foundation is lifted into place, the cut non-protected supporting foundation is replaced by a new foundation, such as a vibration isolation device. The stone historical relic is lowered by the jack group in stages, thereby completing the installation of the new foundation of the stone historical relic.

[0034] Compared with the prior art, the method of the present application has some beneficial characteristics and effects:

[0035] 1) High precision controllability, safety: intelligent remote control electric rope saw machine can control the cutting process remotely, high degree of automation, separated control; low noise, no vibration, to ensure the safety of the structure and people.

[0036] 2) High efficiency: diamond string bead rope saw concrete cutting is to use water-cooled diamond track or electric rope saw cutting machine to cut the reinforced concrete, which can speed up the construction and shorten the construction period.

[0037] 3) High environmental protection: no dust, the high-speed running diamond string rope in the cutting process of diamond rope saw machine is cooled by water and carries away the grinding debris.

[0038] 4) High stability: in the cutting process, the jack is used for auxiliary support, combined with the gasket steel plate to ensure that the structure does not produce too much concentrated force, and keep low stress difference. Then use the jack to lift step by step, to ensure that the relics are horizontal during lifting and the vibration value is within the allowable range.

[0039] The above describes the present application through specific examples, but the present application is not limited to these specific examples. Those skilled in the art should understand that various modifications, equivalent replacements, changes, etc. can be made to the present application, and these changes are within the protection scope of the present application as long as they do not deviate from the spirit of the present application.

Claims

1. A large stone cultural relics non-protection support foundation low stress difference cutting replacement technology, characterized by, Comprising: 1) cutting the unprotected supporting foundation (20) of the stone relic (1) using a diamond wire saw (10); 2) timely inserting steel plates (30) into the cutting gap to fill the gap, while using jacks (40) to support the steel plates protruding from the foundation gap to reduce the stress difference on both sides of the foundation of the diamond wire saw; 3) during the cutting process, as the cutting gap gradually expands, repeating step 2) to set new steel plates and jacks until the entire unprotected supporting foundation (20) is cut; 4) using a group of jacks to gradually jack up the entire stone relic; and 5) replacing the foundation, then using a group of jacks to gradually lower the entire stone relic to complete the installation of the new foundation of the stone relic.

2. The large stone cultural relics non-protection support foundation low stress differential cutting replacement technology according to claim 1, characterized in that, The diamond wire saw (10) is a water-cooled diamond track or an electric wire saw cutting machine.

3. The large stone cultural relics non-protection support foundation low stress differential cutting replacement technology according to claim 1, characterized in that, The diamond wire saw (10) is an intelligent remote control electric wire saw machine.

4. The large stone cultural relics non-protection support foundation low stress differential cutting replacement technology according to claim 1, characterized in that, The jacks are separate hydraulic jacks.

5. The large stone cultural relics non-protection support foundation low stress differential cutting replacement technology according to claim 1, characterized in that, Step 2) further includes inserting shims (50) into the cutting gap to further balance the stress difference.

6. The large stone heritage non-protection support foundation low stress differential cutting replacement technique according to claim 1, characterized in that, In step 4), the jacking displacement of each jack is dynamically adjusted to ensure that the foundation remains level after each jacking to prevent damage to the stone relic.

7. The large stone heritage non-protection support foundation low stress differential cutting replacement technique according to claim 1, characterized in that, It also includes, before step 1), using a fixing device (60) to fix the stone relic (1) above the foundation.

8. The large stone heritage non-protection support foundation low stress differential cutting replacement technique according to claim 1, characterized in that, The new foundation is a vibration isolation device.

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