CN113431364A - Old building dismantling and reforming process - Google Patents

Abstract

The application relates to an old building dismantling and reforming process, in particular to an old building dismantling and reforming process, which comprises the following process steps: the process comprises the following steps: s1: dismantling an old building; s11: removing the floor slab; s12: dismantling the beam; s13: dismantling the shear wall and the column; s14: dismantling the stairs; s2: waste treatment; s21: receiving materials, collecting and placing the removed waste materials in a centralized manner; s22: the cut concrete blocks are crushed again by a crushing device; s23: conveying the materials, and then pulling out the materials from a construction site through a garbage truck; s3: reinforcing an old building; s31: pasting carbon fibers; s32: planting bars; s33: a beam steel-sticking construction scheme; s34: reinforcing the basic raft plate; s35: newly adding wall body reinforcement; this application carries out breakage again to construction waste through breaker, improves conveying efficiency, the transportation of the construction waste of being convenient for.

Description

Old building dismantling and reforming process

Technical Field

The application relates to the field of constructional engineering, in particular to a process for dismantling and transforming an old building.

Background

With the acceleration of modern construction of cities in China, the number of old building demolition projects is increasing day by day. Or in the construction process of the building engineering, due to the change of partial engineering function design, partial parts in the constructed concrete structure engineering need to be dismantled and rebuilt. Because the dismantling position is only a part of the whole concrete structure, the design requirement does not influence the whole structure in the dismantling process, and the safe use function of the adjacent structure can be ensured.

The Chinese patent with the application number of 202010788385.8 discloses a static force dismantling construction process for a concrete structure of a continuous construction project, which comprises the following construction steps: s110, building edge protection; s120, partitioning on a construction drawing, and snapping line marks on the concrete structure by contrasting with the drawing; s130, erecting a full-hall support frame; s140, performing cutting construction on the diamond chain rope; s150, constructing a wall saw cutting machine; s160, cutting the plate; s170, cutting a beam; s180, cutting the column; and S190, cutting stairs.

Aiming at the related technology, the plate, the beam, the column and the stair are cut into large blocks to be hoisted to the ground, and then the large blocks are transported.

Disclosure of Invention

In order to facilitate the transportation of construction waste, the application provides an old building demolition and transformation process.

The old building demolition and reconstruction process provided by the application adopts the following technical scheme:

the old building demolishing and reforming process comprises the following process steps:

s1: dismantling an old building;

s11: removing the floor slab, supporting the floor slab, cutting the floor slab into blocks and hoisting the blocks;

s12: dismantling the beam, supporting the beam, cutting the beam into blocks, and hoisting;

s13: dismantling the shear wall and the column, fixing and cutting the shear wall and the column until the shear wall and the column are cut into blocks and then hoisting the blocks;

s14: dismantling the stairs, namely dismantling and hoisting the building body in sections;

s2: waste treatment;

s21: receiving materials, collecting and placing the removed waste materials in a centralized manner;

s22: the cut concrete blocks are crushed again by a crushing device;

s23: conveying the materials, and then pulling out the materials from a construction site through a garbage truck;

s3: reinforcing an old building;

s31: pasting carbon fibers, namely pasting carbon fiber sheets on the surface of concrete;

s32: embedding steel bars, namely embedding the steel bars into the wall and staggering the steel bars with the original structure;

s33: the beam bonding steel construction scheme is characterized in that a concrete beam is reinforced through a steel plate;

s34: reinforcing the basic raft, installing a newly-added basic raft, and binding the reinforcing steel bars of the basic raft;

s35: and newly adding wall body reinforcement.

By adopting the technical scheme, when an old building is dismantled and reformed, the floor slab, the beam, the shear wall, the shear column and the stair which are not needed in the old building are cut, and the cut waste materials are lifted away from the building through the hoisting equipment and are placed in a centralized manner; then crushing the cut concrete block waste by using a crushing device, and then transporting the crushed concrete block waste away from a construction site by using a garbage truck; then reinforcing the old building; the waste materials in the old building are cut into blocks and are transferred away from the building through dismantling and cutting the old building, and massive concrete waste materials can be crushed again through the crushing device, so that the volume of the waste materials is reduced, the construction waste materials transported by the garbage truck at one time are improved, the transportation efficiency is improved, the potential safety hazard is reduced, and the waste materials are convenient to transport; through reinforceing old building again for old building can have great support intensity when continuing to build, improves the stability of building.

Optionally, breaker includes support, broken platform, conveyer belt, first cutting subassembly and driving piece in S22, broken platform sets up on the support, conveyer belt parallel arrangement has a plurality of groups to rotate through the driving piece and connect and be in on the broken platform, first cutting subassembly sets up adjacent two between the conveyer belt and surpass the conveyer belt sets up, and the blade axial of first cutting subassembly is perpendicular to the direction of motion of conveyer belt.

By adopting the technical scheme, when the construction waste is re-crushed, the construction waste is hoisted to the conveyor belt, the driving piece drives the construction waste to move through the conveyor belt, and the first cutting assembly is started in the moving process to cut the construction waste into a plurality of blocks along the moving direction; support, broken platform, conveyer belt, first cutting assembly and the driving piece that sets up can cut apart massive construction waste, reduces the volume of waste material, improves conveying efficiency, the transportation of the waste material of being convenient for.

Optionally, the driving piece is including rotating motor, gear, toothed chain and two piece at least pivots, the toothed chain corresponds arbitrary conveyer belt and is provided with two to the parallel sets firmly the conveyer belt inner wall, the pivot is parallel to each other and rotates to be connected on the broken bench, the gear is provided with a plurality ofly and coaxial sets firmly in the pivot, the conveyer belt cover is established in the pivot, and makes gear and toothed chain meshing, the rotation motor sets up on broken bench, and output shaft and the coaxial setting of arbitrary pivot.

Through adopting above-mentioned technical scheme, through pivot and gear toothed chain meshing, support conveyer belt and construction waste, drive the pivot through rotating the motor and rotate, realize the transmission, realize the synchronous motion of conveyer belt through the pivot, and then improve the stability of the removal of construction waste.

Optionally, the crushing device further comprises a dust cover and a second cutting assembly, the dust cover is buckled on the crushing table, the second cutting assembly is arranged on the inner wall of the dust cover and can move close to the crushing table, and the axial direction of a blade of the second cutting assembly is horizontal and perpendicular to the axial direction of the blade of the first cutting assembly.

Through adopting above-mentioned technical scheme, the dust cover that sets up can shield the broken process again of building waste, reduces the fragment and splashes and hinder the people, reduces the potential safety hazard, through second cutting assembly, can cut the building waste after having been cut by first cutting assembly again, with whole building waste breakage well style of calligraphy, further reduces the occupation of land volume of a building waste, the transportation of the waste material of being convenient for, improves the conveying efficiency.

Optionally, the crushing table is arranged obliquely along the conveying direction of the conveying belt, the higher end of the conveying belt exceeds the dust cover, the garbage truck is communicated with the lower end of the crushing table, and the second cutting assembly is arranged between the conveying belt and the garbage truck.

Through adopting above-mentioned technical scheme, be convenient for construction waste directly falls on broken platform under the action of gravity after first cutting assembly and second cutting assembly cut into the fritter to along broken landing to the refuse transport vechicle on, direct transportation improves the transfer rate of waste material, raises the efficiency.

Optionally, in S21, the waste material is hoisted and kept away from the building body, and a cushion pad is laid on the falling part of the concrete block.

Through adopting above-mentioned technical scheme, during waste material hoist and mount, bulky, weight is heavy usually, reduces the hoist and mount number of times, and the buffering backing plate of setting for pile point temporarily and building body keep apart, avoid direct whereabouts to strike building body or ground, the buffering thing that falls makes the waste material steadily fall to the ground, improves the security, is convenient for the retransfer and the transportation of waste material simultaneously.

Optionally, in S21, a protective net is hung around the construction range.

Through adopting above-mentioned technical scheme, set up the protection network, carry out interception and buffering to the garrulous little sweeps that produces dismantling the in-process, avoid the piece whereabouts to hinder the people, improve the security.

Optionally, the S32 includes:

s321: positioning and paying off;

s322: steel bar detection, namely determining the position of the steel bar in the original structure before drilling;

s323: drilling and cleaning holes, namely drilling holes on the wall by using a drilling tool, avoiding the position of the original steel bar, and cleaning the holes;

s324: injecting glue, implanting the reinforcing steel bars, filling the holes with the glue along the bottoms of the holes, and immediately inserting the reinforcing steel bars.

Through adopting above-mentioned technical scheme, when carrying out the bar planting to old building, confirm the inside reinforcing bar position of primary structure, run into the interior reinforcing bar of primary structure, form the waste hole when avoiding the bar planting drilling, both influenced the construction work efficiency to probably produce certain destruction influence to the primary structure, implant the reinforcing bar on the wall body, can further improve building structural stability, be convenient for support the building when continuing to build.

Optionally, the S33 includes:

s331: treating a concrete base surface, namely removing degraded concrete such as stripping, loosening, honeycombing, corrosion and the like on the surface of a reinforced member to expose a concrete structure layer;

s332: surface treatment of the steel plate, namely derusting and roughening treatment of the steel edge bonding surface;

s333: pasting a steel plate, preparing structural adhesive, uniformly coating the stirred adhesive on the polished steel surface and the polished concrete surface, and pasting the steel plate on the concrete surface;

s334: drilling, cleaning holes, positioning chemical anchor bolts, and fixing a steel plate on concrete;

s335: and (4) performing rust prevention and fire prevention treatment on the steel plate.

Through adopting above-mentioned technical scheme, when pasting the steel sheet on the roof beam, through clearing up concrete base face and steel sheet, be convenient for improve the two and be convenient for laminate mutually, improve the compactness, through the fixed of chemical crab-bolt, further improve the joint strength of steel sheet and roof beam, and then improve the rigidity and the intensity of roof beam.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the old building demolishing and transformation process, waste materials in the old building are cut into blocks and are transferred away from the building through demolishing and cutting of the old building, massive concrete waste materials can be broken into well-shaped pieces through the breaking device, the whole building waste materials are broken into fragments, the size of the waste materials is reduced, the waste materials directly fall on the waste material garbage truck, the construction waste materials transported by the waste material garbage truck at one time are improved, the transportation efficiency is improved, potential safety hazards are reduced, and waste materials are convenient to transport;

2. the old building demolishs transformation technology, through paste the carbon fiber on old building, plant muscle, roof beam to old building and glue steel etc. consolidates again old building, improves the rigidity, intensity and the stability of old building for old building can have great support strength when continuing to build, improves the stability of building.

Drawings

FIG. 1 is the overall structure schematic diagram of fan welding frock in this application.

Description of reference numerals: 1. a support; 2. a crushing table; 3. a conveyor belt; 4. a first cutting assembly; 5. a dust cover; 6. a second cutting assembly; 7. a drive member; 71. rotating the motor; 72. a gear; 73. a toothed chain; 74. a rotating shaft.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses an old building dismantling and reforming process, which comprises the following process steps:

s1: dismantling an old building;

s11: the floor is dismantled, the floor is a 12cm floor, the bottom of the floor is supported by a scaffold, the maintenance of the periphery of the range is dismantled, and the influence on the dismantling process is reduced; then positioning and paying off, and marking out the area to be cut of the floor slab in advance; drilling hoisting holes, drilling four hoisting holes close to four corners on a floor to be cut by using a water drill, wherein the distance between the hoisting holes and the end part of a plate is more than 500mm, the hoisting holes are symmetrically arranged, and steel wire ropes with the diameter of 20mm penetrate through the hoisting holes to fix the floor; cutting the floor slab, namely cutting the floor slab into square blocks with the size of 1.6m, the width of 1.6m and the thickness of 0.12m by using a road cutting machine, wherein the self weight of each block is less than 1000kg, and when cutting is carried out, two opposite cutting lines are cut firstly, and then the other two cutting lines are cut; hoisting and transferring the floor slab through a steel wire rope by using hoisting equipment, and cleaning the surface of the floor slab;

s12: dismantling the beam; the beam is generally required to be dismantled in sections due to overlong length, and is divided into hanging blocks with the size of 2.5m, the width of 0.3m, the height of 0.5m and the self weight of less than 1000 Kg; supporting the bottom of the beam by using a scaffold, sealing a corresponding construction part of a lower layer to be cut before the beam is cut, reducing potential safety hazards, and then maintaining the periphery of a dismantling range; positioning and paying off, and defining a cutting position; arranging anti-slip grooves on the beam to be dismantled by using a hand pick, wherein the anti-slip grooves are positioned at one quarter of the cutting length of the two ends of the beam block, are symmetrically arranged, and are used for polishing round corners along beam corners; then, two 20mm steel wire ropes are respectively bound at the anti-skidding grooves to prevent the beam blocks from falling off; cutting the cutting line by using a rope saw, cutting the cutting position close to the next beam block, cutting one side close to the wall until the beam blocks are separated, hoisting and transferring the beam blocks through hoisting equipment, and synchronously cutting the next beam block on the same beam;

s13: dismantling the shear wall and the column; the highest height of the shear wall layer is 3.6m, the cutting height is 1.5m, the hanging and unloading weight is less than 1000Kg, the size of the column is 0.6m multiplied by 0.6m, the cutting height is 1.8m, and the hanging and unloading weight is less than 1800 Kg; before dismantling, the construction part is subjected to closed management, and the periphery of the dismantling range is maintained; when the shear wall is dismantled, fixed-point scribing is carried out, cutting lines are marked, two symmetrical hoisting holes are formed in the shear wall through a rhinestone, the distance between the hoisting holes and the edge of the end part of the wall is not less than 500mm, the hoisting holes are drilled through the rhinestone with the diameter of 100mm, then two steel wire ropes with the diameter of 20mm are used for hoisting and fixing, and a wall block is hoisted and transported through hoisting equipment; when the shear column is dismantled, a fixed point is marked, a cutting line is marked, an anti-slip groove is formed by a hand pick for hoisting, the depth is more than 50mm, the hoisting position is more than one third of the position of a column block, each layer of column is dismantled in two sections, and hoisting equipment is used for hoisting the column block through a steel wire rope with the diameter of 20 mm;

s14: dismantling the stairs; before the stairs are dismantled, the construction part is subjected to closed management, the width of the stairs is 1.2m, and the cutting hanging and unloading weight is less than 1000 Kg; the stair dismantling sequence is cut and dismantled from top to bottom in a segmented mode, firstly a rope saw is used for dismantling stair tread plates, then a road cutting machine is used for dismantling platform plates, the weight of each cutting hanging and unloading piece of each platform plate is smaller than 1000Kg, and finally a rope is used for cutting and dismantling the ladder beam, and the weight of each cutting hanging and unloading piece is smaller than 1000 Kg; when the stair is hoisted, the step plate is hoisted along the end part of the cutting seam by arranging the anti-skid grooves, the hoisting position is more than 500mm away from the end part of the plate, the step plate is symmetrically arranged, and the stair is hoisted by using hoisting equipment through a steel wire rope with the diameter of 20 mm;

s2: waste treatment;

s21: receiving materials, namely hanging a protective net around a construction range, hoisting the dismantled waste materials away from a building body, and intensively placing the waste materials on a wood buffer block arranged outside the building body;

s22: the cut concrete blocks are crushed again by a crushing device and then pulled out of a construction site by a garbage truck;

s3: reinforcing an old building;

s31: pasting carbon fibers:

s311: processing a concrete substrate, namely chiseling and cleaning the incomplete and damaged parts on the surface of the concrete member to reach the dense part of the structure; then, carrying out rust removal treatment on the exposed steel bar corrosion position; then, repairing and restoring the incomplete part of the member subjected to chiseling, cleaning and rib exposing by using epoxy mortar with the strength higher than that of the concrete of the original member, polishing the convex part on the surface of the member to be flat, and grinding the corner part into a fillet by using a polishing machine to dry and flatten the concrete substrate;

s312: coating bottom resin, namely uniformly coating the prepared modified epoxy resin on the surface of concrete by using a special roller;

s313: sticking carbon fibers, cutting carbon fiber sheets according to a specified size by using a steel ruler and a wallpaper cutter before pasting, sticking a wide adhesive tape at a cutting position in advance during cutting, and cutting at the center of the wide adhesive tape so as to ensure that the cut carbon fiber sheets are neat and do not fall off; then pasting the carbon fiber on the surface of the concrete coated with the resin;

s314: maintaining the surface, standing until the resin is cured, protecting the position of the patch to prevent wind sand from entering or being subjected to hard impact, then hanging a steel wire mesh on the surface of the carbon fiber, and smearing 25mm polymer mortar for protection treatment;

s32: the bar is planted in the steel bar planting machine,

s321: positioning and paying off, wherein the steel bar planting position is at the newly added concrete structure foundation and the beam column section increasing position, and the steel bar planting position is determined according to the design drawing requirements and the actual field condition and marked;

s322: steel bar detection: determining the position of embedded steel bars, detecting the steel bars in the original structure on site before drilling, avoiding the position of the steel bars in the original structure, and avoiding the formation of waste holes when the embedded steel bars meet the steel bars in the original structure during drilling;

s323: drilling and cleaning holes, namely drilling holes according to the requirements of the hole diameter and the hole depth, drilling holes on a wall body by using a drilling tool through an electric hammer drill, and implementing the specification and the size of the steel bar planting reinforcement and the steel bar planting depth according to the requirements of a construction drawing; then blowing dust in the hole twice by using an electric gas cylinder, cleaning the hole twice by using a steel wire brush, blowing the dust in the hole twice by using the electric gas cylinder, and cleaning until no dust escapes;

s324: injecting glue and implanting reinforcing steel bars, placing the charging bucket with the mixing tube installed in an injection gun, inserting the mixing tube to the bottom of the hole, uniformly injecting glue from the bottom of the hole to the outside, filling 2/3 with the depth of the hole, and then slowly pressurizing and rotating the reinforcing steel bars to the bottom of the hole immediately to ensure that the glue is uniformly distributed until a small amount of glue overflows from the surface visually;

s325: standing and curing, setting a red and white warning flag, and protecting a finished product according to curing time in the performance of the bar-planting glue;

s33: the beam bonding steel construction scheme is characterized in that a concrete beam is reinforced through a steel plate;

s331: treating a concrete base surface, namely removing 1-2 mm of deteriorated concrete such as stripping, loosening, honeycombing, corrosion and the like on the surface of a reinforced member by using a grinding machine until a concrete structure layer is exposed, blowing dust by using an air compressor or a handheld blower after grinding is finished, keeping the surface of the concrete dry, and repairing a large pit by using a repairing material with strong bonding capacity;

s332: surface treatment of the steel plate, namely derusting and roughening the bonding surface of the steel edge until metal luster appears, and wiping the steel edge by cotton cloth;

s333: pasting a steel plate, preparing structural adhesive, uniformly coating the stirred adhesive on the surface of the polished steel and the surface of the concrete by using a small shovel blade, wherein the thickness of the coating adhesive is 1-3mm, the middle part of the coating adhesive is thick, and the edge of the coating adhesive is thin, and then pasting the steel plate on the surface of the concrete;

s334: drilling, cleaning holes, positioning a chemical anchor bolt, paying off by a technician to mark the drilling position of an anchoring point of the chemical anchor bolt, and then drilling by using an electric hammer and a water drill according to the required hole depth of a drawing; after drilling, using a handheld fan to blow and clean dust in the formed hole, and finally cleaning and drying the hole; then, injecting the bar-planting glue into the cleaned holes and rotating, wherein 2/3, the injection amount of which accounts for the hole volume, inserts a chemical anchor bolt with the model of M18 into the holes until the bottom of the hole, and reinforces the steel plate and the concrete;

s335: performing rust prevention and fire prevention treatment on the steel plate, namely smearing cement mortar with the thickness of 25mm on the surface of the profile steel or brushing rust prevention paint and fire prevention coating, wherein the total thickness of the rust prevention paint is 150 mu m, and the thickness of the fire prevention coating meets the first-level fire prevention requirement according to the thickness of the coating required by a product specification;

s34: reinforcing the basic raft plate; according to the raft plate reinforcing drawing, a technician determines the raft plate reinforcing range and discharges the side line of the raft plate reinforcing area. The on-site responsible person checks the line; chiseling the protective layer on the top surface of the original base raft plate according to the position required by the design, removing loose particles and scum dust, brushing the chiseled surface with steel wires, and washing the chiseled surface with high-pressure water; then, 1:1 cement paste mixed with 10% of building glue is coated on the interface of the new concrete and the old concrete for one time, so that the new concrete and the old concrete are reliably connected; according to raft reinforcing and shear wall reinforcing drawings, technical personnel determine a raft reinforcing range and a positioning line of a newly added wall column, pay out the positioning lines of the raft and the shear wall, pay out a raft steel bar positioning line needing to penetrate through an original shear wall according to the drawing design, adopt mechanical pore-forming, need to be filled with cement-based grouting material at a shear wall penetration position, then install the newly added basic raft, and bind and fix the basic raft steel bars;

s35: newly adding wall body reinforcement; according to wall body reinforcing drawing, emit wall body sideline and wall body control line by the technical staff, the wall body protective layer chisels out width 15cm, according to the wall body positioning line, emits vertical reinforcing bar planting bar positioning line, punches, clear hole, tests hole, injecting glue planting bar, when newly-increased wall body top has the roof beam, the bar is planted at the bottom of the roof beam, newly-increased wall body vertical reinforcement bar plants bar from top to bottom, middle overlap joint ligature.

Referring to fig. 1, the crushing device comprises a frame 1, a crushing table 2, a conveyor belt 3, a first cutting assembly 4, a dust guard 5, a second cutting assembly 6 and a drive 7, the drive 7 comprising a rotation motor 71, a gear 72, a toothed chain 73 and two shafts 74. The support 1 is fixed on the ground through foundation bolts, the crushing table 2 is welded on the top wall of the support 1 in an inclined mode, the rotating shafts 74 are parallel to each other and are connected to the crushing table 2 in a rotating mode through rotating seats, the rotating shafts are perpendicular to the inclined direction of the crushing table 2, and the gear 72 is provided with a plurality of coaxial keys and connected to the two rotating shafts 74; the toothed chains 73 are parallel to each other, sleeved on the gears 72 at the same positions on the two rotating shafts 74 and meshed with the gears 72; the conveying belt 3 is provided with a plurality of groups in parallel and sleeved on the two adjacent toothed chains 73, and the inner wall of the conveying belt 3 is welded with the toothed chains 73. The rotating motor 71 is fixed on the crushing table 2 by bolts, and an output shaft of the rotating motor 71 is connected with any one of the rotating shafts 74 by a reducer. The dust cover 5 is buckled on the crushing table 2, the higher end of the conveyor belt 3 exceeds the setting of the dust cover 5, and the lower end of the crushing table 2 is communicated with the garbage transport vehicle. The first cutting assemblies 4 are provided with a plurality of groups and are fixed between two adjacent conveyor belts 3 through bolts, and blades of the first cutting assemblies 4 are axially vertical to the moving direction of the conveyor belts 3 and arranged beyond the top walls of the conveyor belts 3; the pneumatic cylinder is fixed on the inner wall of the dust cover 5 through bolts, the axial direction of the pneumatic cylinder is perpendicular to the conveying belt 3, the second cutting assembly 6 is fixed at one end of a piston rod of the pneumatic cylinder and is arranged between the conveying belt 3 and the garbage transport vehicle, and the axial direction of a blade of the second cutting assembly 6 is horizontal and perpendicular to the axial direction of a blade of the first cutting assembly 4. The implementation principle of the old building demolition and reconstruction process in the embodiment of the application is as follows:

when an old building is dismantled, the concrete floor slab, the concrete beam, the shear wall, the shear column and the stair are dismantled from outside to inside in sequence from top to bottom, and concrete cutting mainly adopts static dismantling mechanical operation. The road cutting machine is used for cutting and dismantling the floor slab, the rope saw is used for cutting and dismantling the beam, the wall and the column, and the electric pick, the handheld electric hammer, the water drill and the like are used for assisting in the use of the hoisting hole and the anti-skidding groove in the cutting process. A large amount of scattered reserved steel bars are removed in the engineering, the removing method comprises the steps of firstly positioning according to the length of the reserved steel bars, then chiseling the reserved steel bars by using an electric pick in cooperation with a hydraulic clamp, and avoiding touching the original steel bars in the chiseling process as much as possible. The floor, the beam, the shear wall and the column are dismantled by a tower crane and an automobile crane, so that the dismantling safety is ensured.

When the demolished construction waste is re-crushed, the construction waste is hoisted onto the conveyor belt 3, the rotating motor 71 is started, so that the rotating motor 71 drives the rotating shaft 74 and the frontal gear 72 on the rotating shaft 74 to rotate, and further drives the toothed chain 73 and the conveyor belt 3 to synchronously rotate, and the construction waste gradually extends into the dust cover 5; start first cutting assembly 4, cut into a plurality of pieces with construction waste along the direction of motion, move to surpassing the tail end until construction waste, start the pneumatic cylinder for the pneumatic cylinder drives second cutting assembly 6 and cuts construction waste again, cuts into the fritter with the waste material, and the waste material directly falls on crushing platform 2 under the action of gravity, and on 2 landing to the refuse transport vechicle of crushing platform, the refuse transport vechicle that adopts total weight 3.5T automobile wheel to press transports the construction site.

The old building is reinforced, under the condition that the original structure of the old building is not influenced, the structure of the old building is reinforced again by pasting carbon fibers on the old building, planting bars on the old building, bonding steel on beams and the like, the integrity is improved, the supporting strength of the old building is convenient to construct continuously, and the old building is dismantled and transformed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. A process for dismantling and transforming an old building is characterized by comprising the following process steps:

s1: dismantling an old building;

s11: removing the floor slab, supporting the floor slab, cutting the floor slab into blocks and hoisting the blocks;

s12: dismantling the beam, supporting the beam, cutting the beam into blocks, and hoisting;

s13: dismantling the shear wall and the column, fixing and cutting the shear wall and the column until the shear wall and the column are cut into blocks and then hoisting the blocks;

s14: dismantling the stairs, namely dismantling and hoisting the building body in sections;

s2: waste treatment;

s21: receiving materials, collecting and placing the removed waste materials in a centralized manner;

s22: the cut concrete blocks are crushed again by a crushing device;

s23: conveying the materials, and then pulling out the materials from a construction site through a garbage truck;

s3: reinforcing an old building;

s31: pasting carbon fibers, namely pasting carbon fiber sheets on the surface of concrete;

s32: embedding steel bars, namely embedding the steel bars into the wall and staggering the steel bars with the original structure;

s33: the beam bonding steel construction scheme is characterized in that a concrete beam is reinforced through a steel plate;

s34: reinforcing the basic raft, installing a newly-added basic raft, and binding the reinforcing steel bars of the basic raft;

s35: and newly adding wall body reinforcement.

2. The old building demolition and reconstruction process according to claim 1, wherein: breaker includes support (1), broken platform (2), conveyer belt (3), first cutting subassembly (4) and driving piece (7) in S22, broken platform (2) set up on support (1), conveyer belt (3) parallel arrangement has a plurality of groups to rotate through driving piece (7) and connect on broken platform (2), first cutting subassembly (4) set up adjacent two between conveyer belt (3) and surpass conveyer belt (3) set up, and the blade axial of first cutting subassembly (4) is perpendicular to the direction of motion of conveyer belt (3).

3. The old building demolition and reconstruction process according to claim 2, wherein: driving piece (7) are including rotating motor (71), gear (72), toothed chain (73) and two piece at least pivot (74), toothed chain (73) correspond arbitrary conveyer belt (3) and are provided with two to the parallel sets firmly conveyer belt (3) inner wall, pivot (74) are parallel and the swivelling joint of each other on broken platform (2), gear (72) are provided with a plurality ofly and coaxial and set firmly in on pivot (74), conveyer belt (3) cover is established on pivot (74), and makes gear (72) and toothed chain (73) meshing, rotate motor (71) and set up on broken platform (2), and output shaft and arbitrary pivot (74) coaxial setting.

4. The old building demolition and reconstruction process according to claim 3, wherein: the crushing device further comprises a dust cover (5) and a second cutting assembly (6), the dust cover (5) is buckled on the crushing table (2), the second cutting assembly (6) is arranged on the inner wall of the dust cover (5) and can move close to the direction of the crushing table (2), and the blade axial direction of the second cutting assembly (6) is horizontal and perpendicular to the blade axial direction of the first cutting assembly (4).

5. The old building demolition and reconstruction process according to claim 4, wherein: broken platform (2) set up along conveyer belt (3) direction of transfer slope, the higher one end of conveyer belt (3) surpasss dust cover (5) and sets up, the refuse transport vechicle with the lower one end intercommunication of broken platform (2), second cutting assembly (6) set up between conveyer belt (3) and the refuse transport vechicle.

6. The old building demolition and reconstruction process according to claim 1, wherein: and S21, hoisting the waste materials and keeping away from the building body, and paving a buffer backing plate at the falling part of the concrete block.

7. The old building demolition and reconstruction process according to claim 1, wherein: and in the step S21, hanging a protective net around the construction range.

8. The old building demolition and reconstruction process according to claim 1, wherein: the S32 includes:

s321: positioning and paying off;

s322: steel bar detection, namely determining the position of the steel bar in the original structure before drilling;

s323: drilling and cleaning holes, namely drilling holes on the wall by using a drilling tool, avoiding the position of the original steel bar, and cleaning the holes;

s324: injecting glue, implanting the reinforcing steel bars, filling the holes with the glue along the bottoms of the holes, and immediately inserting the reinforcing steel bars.

9. The old building demolition and reconstruction process according to claim 1, wherein: the S33 includes:

s331: treating a concrete base surface, namely removing degraded concrete such as stripping, loosening, honeycombing, corrosion and the like on the surface of a reinforced member to expose a concrete structure layer;

s332: surface treatment of the steel plate, namely derusting and roughening treatment of the steel edge bonding surface;

s333: pasting a steel plate, preparing structural adhesive, uniformly coating the stirred adhesive on the polished steel surface and the polished concrete surface, and pasting the steel plate on the concrete surface;

s334: drilling, cleaning holes, positioning chemical anchor bolts, and fixing a steel plate on concrete;

s335: and (4) performing rust prevention and fire prevention treatment on the steel plate.

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