CN110259182B - Construction method of ecological demolition structure of retaining wall - Google Patents
Construction method of ecological demolition structure of retaining wall Download PDFInfo
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- CN110259182B CN110259182B CN201910344215.8A CN201910344215A CN110259182B CN 110259182 B CN110259182 B CN 110259182B CN 201910344215 A CN201910344215 A CN 201910344215A CN 110259182 B CN110259182 B CN 110259182B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
Abstract
The invention relates to a construction method of an ecological demolition structure of a retaining wall, which comprises the following steps: 1) investigating the disease state of the retaining wall; 2) laying a construction operation platform; 3) laying a pipeline isolation protection system; 4) laying a retaining wall dismantling and transferring system; 5) demolishing the retaining wall to be demolished; 6) laying a temporary supporting system; 7) and (5) demolishing and constructing other sections of the retaining wall to be demolished. The invention has the beneficial effects that: the construction operation platform is convenient to lay on site and good in integrity, and the top surface elevation of the platform cover plate can be dynamically adjusted; meanwhile, the lifting shifting body can realize the quick lifting and shifting of the construction operation platform according to the requirement, so that the shifting difficulty of the construction operation platform is reduced; the invention can effectively protect the outer wall pipeline and can synchronously meet the requirements of the upper part hanging and pulling and the lower part supporting of the outer wall pipeline; the retaining wall is convenient to dismantle, the elevation of the waste residue collecting tank can be dynamically adjusted according to needs, and the difficulty in transferring and transporting waste residues is reduced.
Description
Technical Field
The invention relates to a construction method of an ecological retaining wall dismantling structure, which can improve the field construction quality and the integrity of a construction structure, reduce the difficulty in moving and transporting retaining wall waste residues and improve the stability of a wall back soil body, belongs to the field of civil engineering and is suitable for retaining wall dismantling construction engineering.
Background
The retaining wall is used as a retaining structure and is often used in construction projects such as highway engineering, hydraulic engineering, building engineering and the like to prevent deformation and instability of soil and structural damage. Due to defects in construction design or influence of natural environment, diseases such as aging and cracking can occur in the use process of the retaining wall, the safety of a structure is seriously threatened, and the retaining wall needs to be dismantled in time. In the existing retaining wall demolition construction technology, a strong demolition method such as direct blasting is mainly used, so that dangerous conditions such as wall back soil or retaining wall collapse are easy to occur, and potential safety hazards exist.
In the prior art, a method for controllably removing a concrete retaining wall comprises the following steps: dig the earth and stone side of concrete barricade wall back one side under through the excavator, ensure that the concrete barricade is higher than the earth and stone side uses concrete cutter successive layer cutting according to the order from top to bottom the concrete barricade, excavate and collude the concrete operation to the part of having cut, will cut the part and collude to earth and stone side one side, the cutting the layer height of concrete barricade along with the concrete barricade with the difference in height of earth and stone side is decided, and the clear transportation is located the part of having cut of earth and stone side one side. Compared with the existing blasting demolition or powerful crushing demolition method, the method cuts the concrete retaining wall into small blocks for demolition in a cutting mode, and circularly performs construction of digging earthwork and demolishing the wall body. The construction method can avoid the collapse of the concrete retaining wall in the process of demolition, well realize the safe demolition of the retaining wall, but has large excavation amount of earth and stone and high construction cost of clearing, and does not relate to the technologies of waste residue transfer of the retaining wall, stability improvement of wall back soil body and the like.
In summary, the existing construction method has better effect under proper working conditions, but the construction technology in the aspects of improving the integrity of a construction structure, reducing the difficulty of moving and transporting retaining wall waste residues and the like is still imperfect. In view of this, the invention is in need of providing a construction method of an ecological retaining wall demolition structure, which can improve the field construction quality and the construction structure integrity, reduce the difficulty in moving and transporting retaining wall waste residues, and improve the stability of the wall back soil body.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the construction method of the ecological demolition structure of the retaining wall, which can not only improve the field construction quality and the integrity of the construction structure, but also reduce the difficulty in moving and transporting the retaining wall waste residue and improve the stability of the wall back soil body.
The construction method of the ecological demolition structure of the retaining wall comprises the following steps:
1) and (3) investigating the disease state of the retaining wall: inspecting the damage condition of the retaining wall to be removed, determining the process of site removal construction, and preparing materials and components required by the construction;
2) laying a construction operation platform: the upper part of the foundation soil is sequentially provided with a bottom supporting plate, a lower supporting column and a lower supporting plate, and an inclined supporting rod and a bottom plate anchor bar are respectively arranged between the lower supporting column and the foundation soil and between the bottom supporting plate and the foundation soil; the outer side of the lower layer support column is provided with a lifting shifting body; arranging a shifting baffle on the bottom supporting plate, and connecting the shifting baffle with a shifting lacing wire; sequentially arranging a height-adjusting support column, an upper support column and an upper support column on the lower support plate, arranging a fixed support beam and a sliding support beam on the upper part of the upper support column, and laying a platform cover plate on the upper surfaces of the fixed support beam and the sliding support beam; the lower surface of the sliding support beam is provided with a sliding baffle, and the upper part of the sliding support beam is connected with the support beam hanging rod; a sliding support rod is arranged between the upper layer support column and the sliding baffle; a wall connecting rod is arranged between the lower-layer supporting column and the retaining wall to be dismantled and between the upper-layer supporting column and the retaining wall to be dismantled; the top hanging beam is connected with a wall back soil body through a top anchor bar, and the top hanging beam is connected with a supporting beam hanging rod through a hanging rod sliding groove;
3) and (3) laying a pipeline isolation protection system: arranging hanging beam anchor piers at the top of the wall back soil body at intervals along the longitudinal direction of the retaining wall to be dismantled, and connecting the hanging beam anchor piers with the top hanging beam; an external protective pipe is arranged outside the pipeline outside the wall; an external hanging ring is arranged on the outer side of the external protective pipe, and a hanging ring ear plate and a hanging ring connecting hook are arranged on the top of the external hanging ring, so that the hanging ring connecting hook is connected with a top hanging beam through a hanging ring hanging rod; a support platform is arranged at the lower part of the pipeline outside the wall; the pipeline supporting seat is arranged at the joint of the supporting seat platform and the pipeline outside the wall, a platform end plate and a platform inclined strut are arranged at the joint of the supporting seat platform and the retaining wall to be removed, and the supporting seat platform is connected with the top hanging beam through a platform hanging rod;
4) and (3) laying a retaining wall dismantling and transferring system: a groove bottom buttress and a groove side baffle are arranged on the platform cover plate, and a sliding track and a jacking bolt are respectively arranged on the groove bottom buttress and the groove side baffle; arranging a waste residue collecting tank on the sliding track, respectively arranging a fixed side plate and an adjustable side plate at two sides of a tank bottom plate, and respectively arranging a fixed end plate and a rotating end plate at two ends of the tank bottom plate; a side plate rotating shaft and an angle adjusting bolt are arranged between the adjustable side plate and the bottom plate of the tank, and a sealing strip is arranged between the adjustable side plate and the retaining wall to be removed; an end plate rotating shaft is arranged between the rotating end plate and the bottom plate of the tank, and an in-tank pull rod is arranged between the rotating end plate and the fixed end plate; a pull rod rotating shaft is arranged on the side, facing the rotating end plate, of the fixed end plate, and a transverse traction rope is arranged on the side, facing away from the rotating end plate, of the fixed end plate;
5) and (3) demolishing the retaining wall to be demolished: demolishing the retaining wall to be demolished at the position above the elevation of the construction operation platform by adopting an explosion or mechanical excavation mode, enabling demolished wall waste residues to fall into the waste residue collecting tank, moving the waste residue collecting tank to a set position along the transverse direction by virtue of a transverse traction rope and a sliding track, removing the restraint of a pull rod in the tank on a rotating end plate, and removing the wall waste residues from the waste residue collecting tank;
6) laying a temporary supporting system: arranging a support upright post at the outer side of the retaining wall to be removed, and arranging an upright post inclined strut and an upright post bottom plate between the support upright post and the foundation soil; a top bracing column and a top lacing wire are arranged between the suspension bracing beam and the wall back soil body; the lower surface of the suspension support beam is provided with a steel rib hanging rod and a suspension support column; the lower part of the steel skeleton hanging rod is connected with the steel skeleton and the steel skeleton connector; arranging transverse support rods on the sides of the support columns and the suspension support columns facing the wall back soil body, and connecting the transverse support rods with the steel framework; arranging a water retaining reverse ridge and an overlying water-separating body on the top of a wall back soil body, and connecting the lower part of the overlying water-separating body with a hanging drainage ditch;
7) and (3) demolishing construction of other sections of the retaining wall to be demolished: and (5) adjusting the top surface elevations of the construction operation platform and the retaining wall removing and transporting system, and repeating the step 5) and the step 6) to finish the removing construction of other sections of the retaining wall to be removed.
Preferably, the method comprises the following steps: step 2) the lifting shifting body consists of a roller adjusting supporting plate, a roller adjusting support rod, a roller connecting groove plate and a shifting roller, wherein the roller adjusting supporting plate is vertically welded with the lower layer supporting column, the lower surface of the roller adjusting supporting plate is downwards and sequentially provided with the roller adjusting support rod and the roller connecting groove plate, and the shifting roller is arranged between the roller connecting groove plate and the foundation soil; the shifting lacing wire is connected with external traction equipment; the hanging rod sliding groove is connected with the supporting beam hanging rod through a sliding groove baffle.
Preferably, the method comprises the following steps: step 3) the cross section of the external protective pipe is in a circular ring shape, and a protective pipe rotating shaft and a protective pipe fastening bolt are arranged at the joint of the two semicircular arcs; the external lifting ring is integrally connected with lifting ring ear plates in a rolling or welding mode, and ear plate connecting bolts are arranged between the opposite lifting ring ear plates; an end plate adjusting bolt is arranged between the platform end plate and the supporting seat platform, and the platform end plate is tightly attached and connected with a wall back soil body; the upper surface of the pipeline supporting seat is arc-shaped; one end of the platform inclined strut is connected with the strut seat platform, and the other end of the platform inclined strut is anchored in the wall back soil body.
Preferably, the method comprises the following steps: step 4), two ends of the jacking bolt with adjustable length are respectively connected with the groove side baffle and the fixed side plate; the waste residue collecting tank consists of a tank bottom plate, a fixed side plate, an adjustable side plate, a fixed end plate and a rotating end plate; the sliding track is sleeved on the bottom buttress; one end of the in-groove pull rod is connected with the pull rod rotating shaft, and the other end of the in-groove pull rod is provided with an inner baffle and an outer baffle; the inner baffle and the outer baffle are connected with the pull rod in the groove through threads, and the inner baffle and the outer baffle are respectively positioned at two sides of the pull rod connecting groove of the rotating end plate; the middle part of the rotating end plate is provided with a pull rod connecting groove.
Preferably, the method comprises the following steps: step 6), one end of the top lacing wire is connected with the suspension bracing beam, and the other end of the top lacing wire is provided with a lacing wire base plate; determining the weight of the pad plate weight on the upper part of the lacing wire pad plate according to the stability requirement; the steel skeleton and the steel skeleton connector are arranged at intervals; the hanging brace is vertically welded with the hanging brace beam, and a brace diagonal is arranged between the hanging brace and the hanging brace beam.
The invention has the beneficial effects that:
(1) the construction operation platform is convenient to lay on site and good in integrity, and the top surface elevation of the platform cover plate can be dynamically adjusted; meanwhile, the lifting shifting body can realize the quick lifting and shifting of the construction operation platform as required, and the shifting difficulty of the construction operation platform is reduced.
(2) The invention can effectively protect the outer wall pipeline and can synchronously meet the requirements of the upper part hanging and pulling and the lower part supporting of the outer wall pipeline.
(3) The retaining wall is convenient to dismantle, the elevation of the waste residue collecting tank can be dynamically adjusted according to needs, and the difficulty in transferring and transporting waste residues is reduced.
(4) The temporary support system is convenient to arrange, and can synchronously provide support for the wall back soil body by means of the wall back soil body and the foundation soil body, so that the stability of the wall back soil body is improved; meanwhile, the invention can meet the requirement of temporary drainage on a construction site by means of a water retaining reverse bank, an overlying water-separating body and a hanging drainage ditch.
Drawings
FIG. 1 is a flow chart of the construction process of ecological demolition of the retaining wall according to the present invention;
FIG. 2 is a schematic structural view of a retaining wall demolition work platform;
FIG. 3 is a schematic view of the connection structure of the hanging rod and the hanging rod sliding groove of the supporting beam in FIG. 2;
FIG. 4 is a schematic diagram of a pipeline isolation and protection architecture;
FIG. 5 is a schematic view of a retaining wall removal and transfer system;
FIG. 6 is a schematic longitudinal cross-sectional view of the slag collection tank of FIG. 5;
FIG. 7 is a schematic view of the rotating end plate of FIG. 6 in an elevational configuration;
FIG. 8 is a schematic view of a retaining wall removal temporary support system;
fig. 9 is a schematic view of the elevating shifter in fig. 2.
Description of reference numerals: 1-retaining wall to be removed; 2-foundation soil; 3-bottom bracing plate; 4-lower layer support columns; 5-lower supporting plate; 6-hanging a column diagonal brace; 7-pad plate weight; 8-diagonal brace rods; 9-bottom plate anchor bars; 10-lifting type shifting body; 11-a shifting baffle; 12-shifting lacing wires; 13-heightening the supporting column; 14-upper supporting plate; 15-upper support columns; 16-fixing a supporting beam; 17-sliding supporting beam; 18-a platform cover plate; 19-a slide baffle; 20-beam supporting hanging rods; 21-a sliding stay bar; 22-tie bar backing plate; 23-a wall connecting rod; 24-top hanging beam; 25-top anchor bars; 26-wall back soil mass; 27-hanging rod sliding groove; 28-anchor pier of hanging beam; 29-top hanging beam; 30-an external wall duct; 31-external protective pipe; 32-external hanging ring; 33-lifting ring ear plates; 34-a lifting ring connecting hook; 35-a flying ring hanger rod; 36-a docking platform; 37-a pipe support seat; 38-platform end plate; 39-platform diagonal bracing; 40-groove bottom buttress; 41-trough side baffles; 42-a glide track; 43-jacking bolts; 44-a waste residue collection tank; 45-trough floor; 46-fixed side plates; 47-adjustable side plates; 48-a fixed end plate; 49-rotating the end plate; 50-side plate rotating shaft; 51-angle adjusting bolt; 52-sealing the strip; 53-end plate rotation axis; 54-in-groove pull rod; 55-a pull rod shaft; 56-transverse hauling rope; 57-supporting the upright; 58-column diagonal bracing; 59-column bottom plate; 60-hanging a supporting beam; 61-top bracing; 62-top lacing wire; 63-steel skeleton hanging rod; 64-hanging support columns; 65-steel skeleton; 66-steel skeleton connector; 67-transverse struts; 68-water retaining reverse ridge; 69-covering water insulation bodies; 70-hanging drainage ditches; 71-roller adjusting supporting plates; 72-roller adjustment brace; 73-roller connecting groove plate; 74-moving rollers; 75-chute baffles; 76-a protective tube rotating shaft; 77-protective pipe fastening bolt; 78-ear plate connecting bolt; 79-end plate adjusting bolt; 80-an inner baffle; 81-outer baffle; 82-a pull rod connecting groove; 83-platform boom.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Referring to fig. 1, the construction method of the ecological demolition structure of the retaining wall includes the following construction steps:
1) and (3) investigating the disease state of the retaining wall: inspecting the damage condition of the retaining wall 1 to be demolished, determining the process of site demolition construction, and preparing materials and components required by the construction;
2) laying a construction operation platform: the upper part of foundation soil 2 is sequentially provided with a bottom supporting plate 3, a lower supporting column 4 and a lower supporting plate 5, and an inclined supporting rod 8 and a bottom plate anchor bar 9 are respectively arranged between the lower supporting column 4, the bottom supporting plate 3 and the foundation soil 2; the outer side of the lower layer supporting column 4 is provided with a lifting shifting body 10; a shifting baffle plate 11 is arranged on the bottom supporting plate 3, and the shifting baffle plate 11 is connected with a shifting lacing wire 12; a heightening support column 13, an upper support column 14 and an upper support column 15 are sequentially arranged on the lower support plate 5, a fixed support beam 16 and a sliding support beam 17 are arranged on the upper portion of the upper support column 15, and a platform cover plate 18 is laid on the upper surfaces of the fixed support beam 16 and the sliding support beam 17; the lower surface of the sliding support beam 17 is provided with a sliding baffle 19, and the upper part of the sliding support beam 17 is connected with a support beam hanging rod 20; a sliding support rod 21 is arranged between the upper layer support column 15 and the sliding baffle plate 19; a wall connecting rod 23 is arranged between the lower-layer supporting column 4 and the upper-layer supporting column 15 and the retaining wall 1 to be removed; the top hanging beam 24 is connected with a wall back soil body 26 through a top anchor bar 25, and the top hanging beam 24 is connected with the supporting beam hanging rod 20 through a hanging rod sliding groove 27;
3) and (3) laying a pipeline isolation protection system: the top of the wall back soil body 26 is provided with hanging beam anchor piers 28 at even intervals along the longitudinal direction of the retaining wall 1 to be dismantled, and the hanging beam anchor piers 28 are connected with a top hanging beam 29; an external protective pipe 31 is arranged outside the outer wall pipeline 30; an external hanging ring 32 is arranged on the outer side of the external protective pipe 31, and a hanging ring ear plate 33 and a hanging ring connecting hook 34 are arranged on the top of the external hanging ring 32, so that the hanging ring connecting hook 34 is connected with the top hanging beam 29 through a hanging ring hanging rod 35; a support platform 36 is arranged at the lower part of the outer wall pipeline 30; a pipeline supporting seat 37 is arranged at the joint of the supporting seat platform 36 and the pipeline 30 outside the wall, a platform end plate 38 and a platform inclined strut 39 are arranged at the joint of the supporting seat platform 36 and the retaining wall 1 to be removed, and the supporting seat platform 36 is connected with the top hanging beam 29 through a platform hanging rod 83;
4) and (3) laying a retaining wall dismantling and transferring system: a groove bottom buttress 40 and a groove side baffle plate 41 are arranged on the platform cover plate 18, and a sliding rail 42 and a jacking bolt 43 are respectively arranged on the groove bottom buttress 40 and the groove side baffle plate 41; a waste residue collecting tank 44 is arranged on the sliding rail 42, so that a fixed side plate 46 and an adjustable side plate 47 are respectively arranged on two sides of a tank bottom plate 45, and a fixed end plate 48 and a rotating end plate 49 are respectively arranged at two ends of the tank bottom plate 45; a side plate rotating shaft 50 and an angle adjusting bolt 51 are arranged between the adjustable side plate 47 and the tank bottom plate 45, and a sealing strip 52 is arranged between the adjustable side plate 47 and the retaining wall 1 to be dismantled; an end plate rotating shaft 53 is arranged between the rotating end plate 49 and the tank bottom plate 45, and an in-tank pull rod 54 is arranged between the rotating end plate 49 and the fixed end plate 48; a pull rod rotating shaft 55 is arranged on the side, facing the rotating end plate 49, of the fixed end plate 48, and a transverse traction rope 56 is arranged on the side, facing away from the rotating end plate 49, of the fixed end plate 48;
5) and (3) demolishing the retaining wall to be demolished: demolishing the retaining wall 1 to be demolished at the position above the elevation of the construction operation platform by adopting a blasting or mechanical excavation mode, enabling demolished wall waste residues to fall into the waste residue collecting tank 44, moving the waste residue collecting tank 44 to a set position along the transverse direction by virtue of a transverse traction rope 56 and a sliding track 42, removing the restraint of an in-tank pull rod 54 on a rotating end plate 49, and removing the wall waste residues from the waste residue collecting tank 44;
6) laying a temporary supporting system: arranging a support upright post 57 on the outer side of the retaining wall 1 to be removed, and arranging an upright post inclined strut 58 and an upright post bottom plate 59 between the support upright post 57 and the foundation soil 2; a top bracing column 61 and a top lacing wire 62 are arranged between the suspension bracing beam 60 and the wall back soil body 26; the lower surface of the suspension support beam 60 is provided with a steel rib hanging rod 63 and a suspension support column 64; the lower part of the steel hanging rod 63 is connected with a steel framework 65 and a steel connecting body 66; arranging transverse support rods 67 on the sides of the support columns 57 and the suspension support columns 64 facing the wall back soil body 26, and connecting the transverse support rods 67 with the steel framework 65; arranging a water retaining back sill 68 and an overlying water-separating body 69 on the top of the wall back soil body 26, and connecting the lower part of the overlying water-separating body 69 with a hanging drainage ditch 70;
7) and (3) demolishing construction of other sections of the retaining wall to be demolished: and (5) adjusting the top surface elevations of the construction operation platform and the retaining wall removing and transporting system, and repeating the step 5) and the step 6) to finish the removing construction of other sections of the retaining wall 1 to be removed.
Referring to fig. 2 to 9, in the ecological demolition structure of the retaining wall, a bottom supporting plate 3, a lower supporting column 4 and a lower supporting plate 5 are sequentially arranged at the upper part of foundation soil 2, a lifting shifting body 10 is arranged at the outer side of the lower supporting column 4, and a height-adjusting supporting column 13, an upper supporting plate 14 and an upper supporting column 15 are sequentially arranged on the lower supporting plate 5; the top hanging beam 24 is connected with the supporting beam hanging rod 20 through a hanging rod sliding groove 27; an external protection pipe 31 and an external hanging ring 32 are arranged on the outer side of the outer wall pipeline 30, and a support seat platform 36 is arranged at the lower part of the outer wall pipeline 30; a sliding rail 42 and a jacking bolt 43 are respectively arranged on the groove bottom buttress 40 and the groove side baffle 41; a waste residue collecting tank 44 is arranged on the sliding rail 42; the steel skeleton hanging rod 63 on the lower surface of the hanging support beam 60 is connected with the steel skeleton 65 and the steel skeleton connector 66; the side of the supporting upright post 57 and the hanging supporting post 64 facing the wall back soil body 26 is provided with a transverse supporting rod 67; the top of the wall back soil body 26 is provided with a water retaining back sill 68, an overlying water separating body 69 and a hanging drainage ditch 70.
The retaining wall 1 to be dismantled is a concrete retaining wall with the height of 8 m.
The foundation soil 2 is cohesive soil in a hard plastic state.
The bottom supporting plate 3 is made of a steel plate with the thickness of 2 mm.
The lower-layer brace 4 and the upper-layer brace 15 both adopt H-shaped steel with the specification of 300 multiplied by 10 multiplied by 15.
The lower layer fagging 5 and the upper layer fagging 14 all adopt the steel sheet that thickness is 2 mm.
The hanging column inclined strut 6 is made of a steel pipe with the diameter of 60 mm.
The pad ballast weight 7 is a concrete block weighing 2 tons.
The diagonal brace 8 is made of a steel pipe with the diameter of 100 mm.
The bottom plate anchor bars 9 are threaded steel bars with the diameter of 32 mm.
The lifting shifting body 10 is composed of a roller adjusting supporting plate 71, a roller adjusting supporting rod 72, a roller connecting groove plate 73 and a moving roller 74, wherein the roller adjusting supporting plate 71 is connected with the lower layer supporting column 4 in a welding mode. The roller adjusting supporting plate 71 is formed by cutting a steel plate with the thickness of 10 mm; the roller adjusting stay bar 72 adopts a screw rod with the diameter of 30 mm; the roller connecting groove plate 73 is formed by rolling a steel plate with the thickness of 2mm, and the moving roller 74 is a 6-inch rubber wheel.
The shifting baffle 11 is formed by cutting a steel plate material with the thickness of 10 mm.
The shift lacing wire 12 is connected with external traction equipment, and adopts a steel strand with the diameter of 15.24 mm.
The height-adjusting support column 13 is adjustable in length and is formed by combining a screw rod with the diameter of 100mm and a bolt.
The fixed supporting beam 16 is made of H-shaped steel with the specification of 244 multiplied by 175 multiplied by 7 multiplied by 11.
The sliding support beam 17 adopts 25b channel steel.
The platform cover plate 18 is a steel plate having a thickness of 1 mm.
The slide damper 19 is made of a steel plate having a thickness of 10 mm.
The supporting beam hanging rod 20 is a steel pipe with the diameter of 60 mm; the sliding support rods 21 are all composed of screws and bolts with the diameter of 60mm, and the length of the sliding support rods is adjustable.
The tie bar backing plate 22 is made of a steel plate with the thickness of 2 mm.
The wall connecting rod 23 is made of a steel pipe with the diameter of 100 mm.
The top hanging beam 24 is made of H-shaped steel materials with the specification of 250 multiplied by 9 multiplied by 14.
The top anchor 25 is a rebar of 32mm diameter.
The wall back soil body 26 is cohesive soil in a hard plastic state.
The hanging rod sliding groove 27 is formed by rolling a steel plate with the thickness of 2mm, and the groove depth is 1 cm.
The hanging beam anchor pier 28 is made of steel pipe material with the diameter of 100 mm.
The top suspension beam 29 is made of 244 × 175 × 7 × 11H-shaped steel.
The off-wall pipe 30 is a water pipe having a diameter of 200 mm.
The inner diameter of the external protective pipe 31 is 200mm, and the external protective pipe is formed by rolling a steel plate with the thickness of 1 mm; a protective tube rotating shaft 76 and a protective tube fastening bolt 77 are arranged at the joint of the two semicircular arcs. The protective tube rotating shaft 76 is a stainless steel rotating shaft. The pipe-protecting fastening bolt 77 is a bolt having a diameter of 12 mm.
The external hanging ring 32 is formed by rolling a steel plate with the thickness of 1 mm.
The lifting ring ear plate 33 is formed by rolling a steel plate with the thickness of 1 cm.
The hoisting ring connecting hook 34 is a galvanized hook with a diameter of 30 mm.
The lifting ring hanger rod 35 is made of steel bars with the diameter of 32 mm.
The supporting seat platform 36 is formed by cutting a steel plate with the thickness of 2 mm.
The upper surface of the pipeline supporting seat 37 is in a circular arc shape and is formed by cutting a wood block.
The platform end plate 38 is cut from a steel plate having a thickness of 1 mm.
The platform inclined strut 39 is made of steel pipe material with the diameter of 60 mm.
The trough bottom buttress 40 is made of H-shaped steel material with the specification of 250 multiplied by 9 multiplied by 14.
The tank-side fence 41 is cut from a steel plate having a thickness of 10 mm.
The sliding rail 42 is formed by rolling a steel plate with the thickness of 2mm and is connected with the groove bottom buttress 40 in a welding mode.
The jacking bolt 43 is composed of a screw rod and a bolt with the diameter of 30mm, and two ends of the jacking bolt are respectively connected with the groove side baffle plate 41 and the fixed side plate 46.
The waste residue collection tank 44 has a length of 1m, a width of 0.5m and a height of 0.3m, and is composed of a tank bottom plate 45, a fixed side plate 46, an adjustable side plate 47, a fixed end plate 48 and a rotating end plate 49. The groove bottom plate 45, the fixed side plate 46, the adjustable side plate 47, the fixed end plate 48 and the rotating end plate 49 are all formed by rolling steel plates with the thickness of 1 mm. The side plate rotating shaft 50 and the end plate rotating shaft 53 are both made of stainless steel rotating shafts with the diameter of 20 mm. The tie bar connecting groove 82 on the rotating end plate 49 has a width of 25mm and a depth of 20 cm.
The angle adjusting bolt 51 is a stainless steel bolt having a diameter of 12 mm.
The sealing tape 52 is a rubber sheet having a thickness of 2 mm.
The in-groove pull rod 54 is made of a screw rod with the diameter of 20 mm.
The pull rod rotating shaft 55 is a stainless steel rotating shaft with the diameter of 20 mm.
The transverse hauling cable 56 is a steel strand with the diameter of 15.24 mm.
The supporting upright 57 is made of H-shaped steel material with the specification of 300 multiplied by 10 multiplied by 15.
The upright diagonal bracing 58 is made of a steel pipe with the diameter of 60 mm.
The column bottom plate 59 is a steel plate having a thickness of 2 mm.
The suspension brace 60 is made of H-shaped steel with a specification of 200 × 200 × 8 × 12.
The top stay 61 is made of H-shaped steel material with the specification of 300 × 300 × 10 × 15.
The top tie bars 62 are threaded steel bars with a diameter of 32 mm.
The steel hanging rod 63 is formed by rolling a steel bar with the diameter of 32 mm.
The suspension stay 64 is made of H-shaped steel having a specification of 200 × 200 × 8 × 12.
The steel skeleton 65 is cut into a rectangle by a steel plate with the thickness of 6mm, the width of the rectangle is 20cm, and the length of the rectangle is 100 cm.
The steel skeleton connector 66 is made of a steel wire with a diameter of 2.5 mm.
The transverse stay 67 is a steel tube with a diameter of 60 mm.
The water retaining reverse ridge 68 is formed by rolling a steel plate with the thickness of 1mm, the cross section of the water retaining reverse ridge is trapezoidal, and the height of the water retaining reverse ridge is 20 cm.
The overlying water-separating body 69 is a rubber plate with a thickness of 1 mm.
The hanging drainage ditch 70 is formed by rolling a steel plate with the thickness of 1mm, the cross section of the hanging drainage ditch is trapezoidal, the depth of the hanging drainage ditch is 20cm, and the bottom width of the hanging drainage ditch is 20 cm.
The chute baffle 75 is cut from a steel plate with a thickness of 4 mm.
The lug plate connecting bolt 78 and the end plate adjusting bolt 79 are bolts with the diameter of 12 mm.
The inner baffle 80 and the outer baffle 81 are both bolts with the thickness of 1cm and the inner diameter of 20 mm.
The platform boom 83 is a steel pipe with a diameter of 60 mm.
Claims (5)
1. The construction method of the ecological demolition structure of the retaining wall is characterized by comprising the following steps: the method comprises the following construction steps:
1) and (3) investigating the disease state of the retaining wall: inspecting the damage condition of the retaining wall (1) to be demolished, determining the process of site demolition construction, and preparing materials and components required by the construction;
2) laying a construction operation platform: a bottom supporting plate (3), a lower supporting column (4) and a lower supporting plate (5) are sequentially arranged on the upper part of foundation soil (2), and an inclined supporting rod (8) and a bottom plate anchor bar (9) are respectively arranged between the lower supporting column (4) and the foundation soil (2) and between the bottom supporting plate (3) and the foundation soil (2); a lifting displacement body (10) is arranged at the outer side of the lower layer support column (4); the lifting shifting body (10) consists of a roller adjusting support plate (71), a roller adjusting support rod (72), a roller connecting groove plate (73) and a moving roller (74), the roller adjusting support plate (71) is vertically welded with the lower layer support column (4), the lower surface of the roller adjusting support plate (71) is downwards and sequentially provided with the roller adjusting support rod (72) and the roller connecting groove plate (73), and the moving roller (74) is arranged between the roller connecting groove plate (73) and the foundation soil (2); a shifting baffle (11) is arranged on the bottom supporting plate (3), and the shifting baffle (11) is connected with a shifting lacing wire (12); a height-adjusting support column (13), an upper support column (14) and an upper support column (15) are sequentially arranged on the lower support plate (5), a fixed support beam (16) and a sliding support beam (17) are arranged on the upper portion of the upper support column (15), and a platform cover plate (18) is laid on the upper surfaces of the fixed support beam (16) and the sliding support beam (17); the lower surface of the sliding support beam (17) is provided with a sliding baffle (19), and the upper part of the sliding support beam (17) is connected with a support beam hanging rod (20); a sliding support rod (21) is arranged between the upper layer support column (15) and the sliding baffle (19); a wall connecting rod (23) is arranged between the lower layer supporting column (4) and the upper layer supporting column (15) and the retaining wall (1) to be dismantled; the top hanging beam (24) is connected with a wall back soil body (26) through a top anchor bar (25), and the top hanging beam (24) is connected with the supporting beam hanging rod (20) through a hanging rod sliding groove (27);
3) and (3) laying a pipeline isolation protection system: the method comprises the following steps that suspension beam anchor piers (28) are arranged on the top of a wall back soil body (26) at equal intervals along the longitudinal direction of a retaining wall (1) to be dismantled, and the suspension beam anchor piers (28) are connected with a top suspension beam (29); an external protective pipe (31) is arranged on the outer side of the outer wall pipeline (30); an external hanging ring (32) is arranged on the outer side of the external protective pipe (31), and a hanging ring ear plate (33) and a hanging ring connecting hook (34) are arranged on the top of the external hanging ring (32), so that the hanging ring connecting hook (34) is connected with a top hanging beam (29) through a hanging ring hanging rod (35); a support platform (36) is arranged at the lower part of the outer wall pipeline (30); a pipeline supporting seat (37) is arranged at the joint of the supporting seat platform (36) and the pipeline (30) outside the wall, a platform end plate (38) and a platform inclined strut (39) are arranged at the joint of the supporting seat platform (36) and the retaining wall (1) to be dismantled, and the supporting seat platform (36) is connected with the top hanging beam (29) through a platform hanging rod (83);
4) and (3) laying a retaining wall dismantling and transferring system: a groove bottom buttress (40) and a groove side baffle (41) are arranged on the platform cover plate (18), and a sliding track (42) and a jacking bolt (43) are respectively arranged on the groove bottom buttress (40) and the groove side baffle (41); a waste residue collecting tank (44) is arranged on the sliding track (42), a fixed side plate (46) and an adjustable side plate (47) are respectively arranged on two sides of a tank bottom plate (45), and a fixed end plate (48) and a rotating end plate (49) are respectively arranged on two ends of the tank bottom plate (45); a side plate rotating shaft (50) and an angle adjusting bolt (51) are arranged between the adjustable side plate (47) and the bottom plate (45) of the tank, and a sealing strip (52) is arranged between the adjustable side plate (47) and the retaining wall (1) to be dismantled; an end plate rotating shaft (53) is arranged between the rotating end plate (49) and the bottom plate (45) of the groove, and an in-groove pull rod (54) is arranged between the rotating end plate (49) and the fixed end plate (48); a pull rod rotating shaft (55) is arranged on the side, facing the rotating end plate (49), of the fixed end plate (48), and a transverse traction rope (56) is arranged on the side, away from the rotating end plate (49), of the fixed end plate (48);
5) and (3) demolishing the retaining wall to be demolished: demolishing the retaining wall (1) to be demolished at the position above the elevation of the construction operation platform by adopting a blasting or mechanical excavation mode, enabling demolished wall waste residues to fall into the waste residue collecting tank (44), moving the waste residue collecting tank (44) to a set position along the transverse direction by virtue of a transverse traction rope (56) and a sliding track (42), then removing the constraint of an in-tank pull rod (54) on a rotating end plate (49), and removing the wall waste residues from the waste residue collecting tank (44);
6) laying a temporary supporting system: arranging a supporting upright post (57) at the outer side of the retaining wall (1) to be removed, and arranging an upright post inclined strut (58) and an upright post bottom plate (59) between the supporting upright post (57) and the foundation soil (2); a top bracing column (61) and a top lacing wire (62) are arranged between the suspension bracing beam (60) and the wall back soil body (26); a steel rib hanging rod (63) and a hanging support column (64) are arranged on the lower surface of the hanging support beam (60); the lower part of the steel skeleton hanging rod (63) is connected with a steel skeleton (65) and a steel skeleton connector (66); arranging transverse support rods (67) on the sides of the support columns (57) and the suspension support columns (64) facing the wall back soil body (26), and connecting the transverse support rods (67) with the steel framework (65); arranging a water retaining reverse sill (68) and an overlying water-separating body (69) at the top of a wall back soil body (26), and connecting the lower part of the overlying water-separating body (69) with a hanging drainage ditch (70);
7) and (3) demolishing construction of other sections of the retaining wall to be demolished: and (4) adjusting the top surface elevations of the construction operation platform and the retaining wall dismantling and transporting system, and repeating the step 5) and the step 6) to finish the dismantling construction of other sections of the retaining wall (1) to be dismantled.
2. A construction method of an ecological demolition structure of a retaining wall according to claim 1, characterized in that: step 2), the shifting lacing wire (12) is connected with external traction equipment; the hanging rod sliding groove (27) is connected with the supporting beam hanging rod (20) through a sliding groove baffle (75).
3. A construction method of an ecological demolition structure of a retaining wall according to claim 1, characterized in that: step 3), the cross section of the external protective pipe (31) is in a circular ring shape, and a protective pipe rotating shaft (76) and a protective pipe fastening bolt (77) are arranged at the joint of the two semicircular arcs; the external lifting ring (32) is integrally connected with lifting ring ear plates (33) in a rolling or welding mode, and ear plate connecting bolts (78) are arranged between the opposite lifting ring ear plates (33); an end plate adjusting bolt (79) is arranged between the platform end plate (38) and the supporting seat platform (36), and the platform end plate (38) is tightly attached and connected with the wall back soil body (26); the upper surface of the pipeline supporting seat (37) is arc-shaped; one end of the platform inclined strut (39) is connected with the strut seat platform (36), and the other end is anchored in the wall back soil body (26).
4. A construction method of an ecological demolition structure of a retaining wall according to claim 1, characterized in that: step 4), two ends of the jacking bolt (43) with adjustable length are respectively connected with the groove side baffle (41) and the fixed side plate (46); the waste residue collecting tank (44) consists of a tank bottom plate (45), a fixed side plate (46), an adjustable side plate (47), a fixed end plate (48) and a rotating end plate (49); the sliding rail (42) is sleeved on the bottom buttress (40); one end of the in-groove pull rod (54) is connected with the pull rod rotating shaft (55), and the other end is provided with an inner baffle (80) and an outer baffle (81); the inner baffle (80) and the outer baffle (81) are connected with the pull rod (54) in the groove through threads, and the inner baffle (80) and the outer baffle (81) are respectively positioned at two sides of a pull rod connecting groove (82) of the rotating end plate (49); a tie bar connecting groove (82) is provided in the middle of the rotating end plate (49).
5. A construction method of an ecological demolition structure of a retaining wall according to claim 1, characterized in that: step 6), one end of the top lacing wire (62) is connected with the suspension supporting beam (60), and the other end is provided with a lacing wire base plate (22); determining the weight of a pad ballast weight (7) at the upper part of the lacing wire pad (22) according to the stability requirement; the steel skeleton (65) and the steel skeleton connector (66) are arranged at intervals; the hanging brace (64) is vertically welded with the hanging brace beam (60), and a hanging brace inclined brace (6) is arranged between the hanging brace (64) and the hanging brace beam (60).
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| JPH0414518A (en) * | 1990-05-02 | 1992-01-20 | Fusao Sakano | Method for constructing new retaining wall at old retaining wall position on neighboring line |
| JP4093670B2 (en) * | 1999-02-23 | 2008-06-04 | 株式会社大林組 | Dismantling method of underground structure |
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|---|---|---|---|---|
| JPH0414518A (en) * | 1990-05-02 | 1992-01-20 | Fusao Sakano | Method for constructing new retaining wall at old retaining wall position on neighboring line |
| JP4093670B2 (en) * | 1999-02-23 | 2008-06-04 | 株式会社大林組 | Dismantling method of underground structure |
| CN108487666A (en) * | 2018-03-14 | 2018-09-04 | 重庆钢铁集团建设工程有限公司 | A kind of concrete barricade controlling method for dismounting |
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| Title |
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| 既有铁路线旁挡墙的爆破拆除;宋伟;《铁道建筑》;19990320(第03期);第33-35页 * |
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