A protective demolition method for site protection canopy

Abstract

The present application belongs to the technical field of site protection, and particularly relates to a protective demolition method for site protection roof, comprising the following steps: step one: scanning modeling of the site protection roof is performed to determine an optimal demolition scheme; step two: lifting supports and a lifting system are arranged outside the site protection roof, and a sliding support and a sliding system are arranged inside the site; step three: the lifting system lifts the site protection roof until the site protection roof is above the sliding system; the site protection roof and the sliding system are fixedly connected through a plurality of hydraulic crawlers; step four: after new structure construction is completed, the plurality of hydraulic crawlers are pushed to remove the site protection roof; compared with the prior art, the lifting system is used to lift the site protection roof, the new structure is constructed on the site after the site protection roof is lifted to a certain position, space intersection conflict between the site protection roof and the new structure is avoided, and the construction of the new structure is facilitated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of site protection, and particularly relates to a protective demolition method for a site protection roof. BACKGROUND

[0002] At present, in the process of archaeological excavation, in order to protect the cultural relics site from the influence of the natural environment, a temporary protective roof is built directly above the site. With the vigorous development of cultural relic museums in China, a new museum exhibition hall steel structure needs to be built above the site. Since the existing protective roof and the newly built structure have a spatial intersection conflict, the construction of the newly built structure is affected, and therefore the protective roof needs to be demolished. The protection of the site is high, and there cannot be a protective gap period during the process of demolishing the old and building the new. During the construction process, the site cannot be randomly excavated or filled with soil, and large mechanical equipment cannot be entered, thereby causing great difficulty in the demolition of the protective roof. SUMMARY

[0003] The present application provides a protective demolition method for a site protection roof.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a protective demolition method for a site protection roof, characterized in that it comprises the following steps:

[0005] Step 1: scanning and modeling the site protection roof to determine the optimal demolition scheme;

[0006] Step 2: setting lifting supports and a lifting system outside the site protection roof, and setting sliding supports and a sliding system inside the site;

[0007] Step 3: lifting the site protection roof by the lifting system until the site protection roof is located above the sliding system; the site protection roof and the sliding system are fixedly connected through a plurality of hydraulic crawlers;

[0008] Step 4: after the new structure is completed, the plurality of hydraulic crawlers are pushed to demolish the site protection roof.

[0009] As a preferred, the step 1 comprises: scanning the site protection roof into a modeling system by using a 3D scanner, analyzing the net rack of the site protection roof in the modeling system, and determining the optimal demolition scheme.

[0010] As a preferred, the step 2 comprises: setting lifting supports outside the structural columns of the site protection roof, installing a lifting system above the lifting supports, welding lifting lugs on the upper ends of the plurality of structural columns of the site protection roof, detachably connecting the lifting lugs with the lifting system through steel wires, and setting sliding supports inside the site, and installing a sliding system above the sliding supports.

[0011] As preferred, the lifting system comprises a plurality of hydraulic lifters and a plurality of hydraulic pumps, the plurality of hydraulic lifters are all installed above the lifting support, the plurality of hydraulic lifters are all detachably connected with the plurality of hydraulic pumps, and the plurality of hydraulic pumps are all externally connected with controllers, and the plurality of hydraulic lifters are all detachably connected with the lifting lugs at the upper ends of the plurality of structural columns through steel wires.

[0012] As preferred, the step three comprises: lifting the site protection roof by the hydraulic lifters and the steel wires, grading loading the hydraulic lifters, removing the structural columns of the site protection roof after lifting to a suitable position, reserving the lifting lugs, controlling the hydraulic lifters to lower the site protection roof, fine-tuning the site protection roof by the hydraulic lifters when the site protection roof is lowered above the plurality of sliding shoes, and sliding the plurality of sliding shoes to suitable positions along the sliding rails, the plurality of sliding shoes are all fixedly connected with sliding shoe columns between the sliding rails and the sliding shoe columns.

[0013] As preferred, the step four comprises: constructing a new structure above the site, pushing the site protection roof by the hydraulic creepers after the construction of the new structure is completed, and removing the site protection roof after the site protection roof is pushed out of the range of the new structure.

[0014] As preferred, the lifting support comprises a cradle and a roadbed box, a foundation pit is excavated outside the structural columns of the site protection roof, the foundation pit is filled with clay and thick brick slag at the bottom and is compacted, the roadbed box is installed above the thick brick slag, the cradle is installed above the roadbed box, and the lifting system is installed above the cradle.

[0015] As preferred, the sliding support comprises a plurality of bases and a support one, the plurality of bases are arranged in the site, the support one is installed above the plurality of bases, and the sliding rail is installed above the support one.

[0016] As preferred, the roadbed box is provided with a plurality of counterweights.

[0017] Compared with the prior art, the application has the advantages and positive effects that:

[0018] (1) The existing protection roof and the newly-built structure will have space intersection conflicts, affecting the construction of the newly-built structure, while the application lifts the site protection roof by the lifting system, lifts to a certain position, and then constructs a new structure on the site, so as to avoid the space intersection conflicts between the site protection roof and the new structure, and is beneficial to the construction of the newly-built structure.

[0019] (2) the existing site protection requirements are high, and the protective gap period cannot appear in the process of demolishing the old and building the new, and the lifting system is used to transfer the site protection roof cover to the top of the sliding system, the construction of the new structure is carried out between the site above and the site protection roof cover, which can complete the construction of the new structure, and can also protect the site with the site protection roof cover, so that the protective gap period does not appear in the process of demolishing the old and building the new;

[0020] (3) the existing site cannot be randomly excavated or filled, and larger mechanical equipment cannot be entered, and the lifting support is installed in the foundation pit outside the site, the lifting support is installed above the lifting support, the sliding support is placed in the site, and the sliding system is installed above the sliding support, so that the site is protected to the maximum extent;

[0021] (4) the hydraulic crawler is fixedly connected between the sliding shoe column and the sliding rail, after the new structure is constructed, the hydraulic crawler pushes the site protection roof cover, the site protection roof cover is pushed out of the range of the new structure, and then the site protection roof cover is removed, so that the site is protected, and the protective gap period is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description:

[0023] Figure 1 The site protection roof cover protection demolition method flow chart for embodiment 1 is provided; DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the following will further illustrate the present application by combining with the drawings and embodiments.

[0025] In the following description, many specific details are set forth in order to fully understand the present application, but the present application can also be implemented in other ways different from the description, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0026] Embodiment 1

[0027] The following will be combined with the drawings Figure 1 Further description of the present application, a kind of site protection roof cover protection demolition method, as shown in Figure 1 , comprising the following steps:

[0028] Step one: the 3D scanner is used to scan the site protection roof cover into the modeling system, the stress condition and damage condition of the net rack of the site protection roof cover are analyzed in the modeling system, and the optimal demolition scheme is determined.

[0029] Step two: set lifting support outside the structural column of the site protection roof, and the lifting support comprises a bed frame and a roadbed box, then excavate a foundation pit outside the structural column of the site protection roof, lay and compact clay and thick brick slag on the bottom of the foundation pit to make the thick brick slag flat, install the roadbed box above the thick brick slag, install the bed frame above the roadbed box, install the lifting system above the bed frame, weld lifting lugs on the upper ends of the structural columns of the site protection roof, and detachably connect the lifting lugs with the lifting system through steel wires.

[0030] Set a sliding support in the site, and the sliding support comprises a plurality of bases and a support one, the plurality of bases are arranged in the site, and the support one is installed above the plurality of bases, and a sliding system is installed above the support one.

[0031] The lifting system comprises a plurality of hydraulic lifters and a plurality of hydraulic pumps, the plurality of hydraulic lifters are installed above the lifting support, the plurality of hydraulic lifters are detachably connected with the plurality of hydraulic pumps respectively, the plurality of hydraulic pumps are all externally connected with controllers, and the plurality of hydraulic lifters are detachably connected with the lifting lugs on the upper ends of the plurality of structural columns through steel wires respectively.

[0032] The sliding system comprises a sliding rail and a plurality of sliding shoes, the sliding rail is installed above the sliding support, and the plurality of sliding shoes are all in sliding connection with the sliding rail.

[0033] Step three: use the hydraulic lifters and the steel wires to lift the site protection roof, perform staged loading on the hydraulic lifters, remove the structural columns of the site protection roof after lifting to a suitable position, retain the lifting lug part, control the hydraulic lifters to lower the site protection roof, when the sliding shoes of the sliding system are above the site protection roof, control the hydraulic lifters to fine-tune the site protection roof, and make the plurality of sliding shoes slide to suitable positions along the sliding rail, the plurality of sliding shoes are all fixedly connected with sliding shoe columns between the site protection roof at the corresponding positions, and the hydraulic creepers are fixedly connected between the sliding rail and the sliding shoe columns.

[0034] The hydraulic lifters are loaded in stages, and the loading is in the order of 20%, 40%, 60%, 80%, and 100%, and after the loading is completed, the structural columns of the site protection roof are cut off under the condition that the site protection roof is observed to be normal, and the lifting lug part is retained.

[0035] After the plurality of sliding shoes and the site protection roof are all fixedly connected with the sliding shoe columns, the plurality of hydraulic lifters are synchronously unloaded in stages, and the unloading is in the order of 20%, 40%, 60%, and 80%, the plurality of hydraulic lifters are unloaded to 100% under the condition that the site protection roof is observed to be normal, the steel wires are not stressed when unloaded to 100%, the site protection roof is completely transferred to the sliding rail, and the site protection roof can continue to protect the site at this time.

[0036] Step four: new structure construction is carried out above the site, after the new structure construction is completed, the hydraulic crawler pushes the site protection roof, after the site protection roof is pushed out of the range of the new structure, the site protection roof is removed.

[0037] In the application, the hydraulic hoist adopts TJJ-600 type hydraulic hoist, the hydraulic pump adopts TJV-30 / 60 hydraulic pump, the diameter of the steel wire rope is selected according to the type of the hydraulic hoist, and the TJJ-600 type hydraulic hoist selects the steel wire rope with a diameter of 15.2 mm.

[0038] In the application, the two ends of the slide rail are provided with baffles to prevent the plurality of slide shoes from being separated from the slide rail, and the slide shoe column is penetrated by a slide shoe connecting rod.

[0039] In the application, the lime soil laid at the bottom of the foundation pit is a building material prepared by mixing lime and soil at a volume ratio of 3:7, and the thickness of the lime soil laid at the bottom of the foundation pit is 200 mm.

[0040] In the application, the thick brick slag is laid above the lime soil, and the thickness of the thick brick slag is 100 mm.

[0041] In the application, a plurality of counterweights are installed on the roadbed box, so that the site protection roof can keep balance during lifting.

[0042] The above is only a preferred embodiment of the present application, and is not intended to limit the form of the present application, and any skilled person in the art can use the disclosed technical content to make changes or modifications to equivalent embodiments applied to other fields, but any simple modification, equivalent change, etc. within the technical solution content of the present application, according to the technical essence of the present application, the above embodiments are still within the protection scope of the present application.

Claims

1. A method for the protective dismantling of a site's protective roof, characterized in that, Includes the following steps: Step 1: Scan and model the protective roof of the site to determine the optimal demolition plan; Step 2: Install lifting supports and lifting systems on the outside of the protective roof of the site, and install sliding supports and sliding systems inside the site; Step 3: The lifting system lifts the protective roof of the archaeological site until it is above the sliding system; the protective roof and the sliding system are fixedly connected by multiple hydraulic crawlers. Step 4: After the new structure is completed, multiple hydraulic crawlers will push and remove the protective roof of the site. Step two includes: setting up lifting brackets on the outside of the structural columns of the protective roof of the site, installing a lifting system on the top of the lifting brackets, welding lifting lugs to the top of multiple structural columns of the protective roof of the site, detachably connecting the lifting lugs to the lifting system via steel wire ropes, and setting up sliding brackets inside the site, installing a sliding system on the top of the sliding brackets; The lifting system includes multiple hydraulic lifters and multiple hydraulic pumps. The multiple hydraulic lifters are installed on top of the lifting support, and the multiple hydraulic lifters are detachably connected to the multiple hydraulic pumps. The multiple hydraulic pumps are all connected to external controllers. The multiple hydraulic lifters are detachably connected to the lifting lugs at the top of the multiple structural columns via steel wire ropes. The sliding system includes a slide rail and multiple sliding shoes. The slide rail is installed above the sliding bracket, and the multiple sliding shoes are slidably connected to the slide rail. Step three includes: using a hydraulic lifter and steel wire rope to lift the protective roof of the site; loading the hydraulic lifter in stages; after lifting to a suitable position, removing the structural columns of the protective roof of the site, retaining the lifting lugs; controlling the hydraulic lifter to lower the protective roof of the site; when it is lowered above the sliding shoes, the hydraulic lifter makes a fine adjustment to the protective roof of the site and causes multiple sliding shoes to slide along the slide rail to a suitable position; each of the multiple sliding shoes and the corresponding protective roof of the site is fixedly connected to a sliding shoe column, and a hydraulic crawler is set between the slide rail and the sliding shoe column; Step four includes: constructing a new structure above the site; after the new structure is completed, a hydraulic crawler pushes the protective roof of the site out of the range of the new structure, and then dismantles the protective roof of the site. The lifting support includes a frame and a roadbed box. A foundation pit is excavated outside the structural columns of the protective roof of the site. Lime soil and thick brick debris are laid at the bottom of the foundation pit and compacted. The roadbed box is installed on top of the thick brick debris. The frame is installed above the roadbed box, and the lifting system is installed above the frame.

2. The method for protective removal of the archaeological site protective roof according to claim 1, characterized in that, Step one includes: using a 3D scanner to scan the protective roof of the site into the modeling system, analyzing the grid structure of the protective roof of the site in the modeling system, and determining the optimal demolition plan.

3. The method for protective removal of the archaeological site protective roof according to claim 1, characterized in that, The sliding support includes multiple bases and a support frame. Multiple bases are set up within the site, and the support frame is installed above the multiple bases. The sliding rail is installed above the support frame.

4. The method for protective removal of the archaeological site protective roof according to claim 1, characterized in that, The roadbed box is equipped with multiple counterweights.

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