CN110700625B - Method for reinforcing integral translation foundation of building - Google Patents
Method for reinforcing integral translation foundation of building Download PDFInfo
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- CN110700625B CN110700625B CN201910979260.0A CN201910979260A CN110700625B CN 110700625 B CN110700625 B CN 110700625B CN 201910979260 A CN201910979260 A CN 201910979260A CN 110700625 B CN110700625 B CN 110700625B
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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
- E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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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
- E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
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Abstract
The invention discloses a reinforcement treatment method for an integral translation foundation of a building, which comprises the steps of firstly excavating an operation pit at the periphery of the foundation of the building, gradually cutting the bottom of the foundation of the building in a block-by-block penetrating manner by adopting a rope saw in or outside the operation pit, then gradually replacing soil in a main support block by adopting a prefabricated hollow box girder, gradually replacing the soil at the bottom of the foundation of the whole building into a plurality of prefabricated hollow box girders which are arranged side by side, and then connecting the two ends of the plurality of prefabricated hollow box girders which are arranged side by side with a ring girder to form an integral foundation; the rope saw is adopted to gradually cut the old foundation soil body in a distributed manner, the old foundation soil body is hollowed and then replaced with the prefabricated hollow box girder foundation, the excavation amount is small in the construction processes of cutting, excavating and replacing, the efficiency is high, large vibration impact cannot be generated, a large amount of dust cannot be generated, the construction process cannot damage buildings on the foundation, the integral strength of the foundation after the foundation is reinforced is high, and the translation protection of the buildings is facilitated.
Description
Technical Field
The invention relates to the technical field of integral translation of buildings, in particular to a method for reinforcing a foundation of the integral translation of a building.
Background
With the continuous development of cities, some old buildings need to be dismantled or shifted to facilitate the expansion of new roads, the construction of new buildings and the like. For valuable buildings such as historical relics, historic buildings and the like, in order to not destroy the original appearance of old buildings, the method of translating the whole building to other positions without any change is generally adopted for treatment.
The successful cases of the integral translation of the building are more and more, the integral translation of the frame structure building is generally that a translation lower rail is arranged at the bottom of the column, a translation upper rail is arranged on the translation lower rail to underpin the upper building, and then the frame column is cut off to carry out the translation operation.
For buildings with structures which are not frame-type structures, because the buildings have poor deformation resistance, the buildings need to be reinforced before the buildings are integrally translated, particularly, the foundation at the bottom of the buildings needs to be reinforced, the buildings can be integrally translated according to a conventional construction method after being reinforced, otherwise, a great risk exists, and the integral translation failure of the buildings can be caused.
The patent application with the publication number of CN101054803A provides a method for integrally underpinning a foundation of an ancient building, which is characterized in that a working foundation pit is dug at the periphery of the foundation of the ancient building, and a prefabricated rectangular hollow box girder is adopted to replace a soil body under the original foundation; in the pushing process, manual small-amplitude soil excavation is adopted in the box girder, and the soil is excavated while pushing; after the foundation is underpinned for one section, arranging reinforcing steel bars in the box girder, erecting retaining molds at box girder openings at two ends, and pouring vibration-free concrete; and after underpinning the bottom of the foundation is finished, pouring a circle of reinforced concrete boundary beam around the foundation, and connecting the single stressed beams inside the foundation into a whole. The technical problem that the requirement of integral displacement cannot be met because the foundation of the historic building is a loose masonry foundation with poor integrity is solved. However, in the construction method for replacing the soil body in the original foundation by manually excavating soil in the box girder, when the box girder is jacked in and excavated, enough operation space needs to be reserved in the prefabricated rectangular hollow box girder, so that the size of the prefabricated rectangular hollow box girder needs to be large, the excavation amount of the whole foundation soil body is large, and the construction efficiency is low.
The patent application with publication number CN105089292A provides an integral translation construction method for a house with a soil foundation, which comprises inserting channel steel, connecting steel beams, a soil foundation cofferdam, fixing bolts, fixing channel steel, connecting pieces, longitudinal rolling round steel and transverse rolling round steel; two sides of the penetrating channel steel are of concave-convex tenon structures; the two ends of the penetrating channel steel are provided with bayonet structures and bolt holes for fixedly connecting steel beams, and the connecting steel beams corresponding to the penetrating channel steel are also provided with bolt holes; one end of the fixed channel steel is of a slope structure, and bolt holes are formed in the two ends of the fixed channel steel; two ends of the upper layer rolling round steel are provided with threads which form a frame-shaped structure with the fixed channel steel through connecting pieces. The thickness of the soil foundation is determined according to the house structure and the surrounding environment during construction, the soft soil foundation is amplified according to the stress distribution of the soil foundation, a horizontal hard foundation with the same height as the thickness of the soil foundation is built in the moving direction of the house, the penetrating channel steel is sequentially and horizontally inserted into the soft soil layer below the house to be moved in the horizontal plane of the built hard foundation or the height of the penetrating channel steel which is higher than the height of two rolling round steel straight channels according to the moving direction of the house, each penetrating channel steel is transversely connected by a tenon structure, the bayonet of each penetrating channel steel is aligned, two ends of the penetrating channel steel are clamped into the bayonet of each penetrating channel steel by connecting steel beams and fixed by bolts, the penetrating channel steel becomes an integral platform, for a larger house, a plurality of connecting steel beams can be used at two ends of the penetrating channel steel, redundant soft soil outside the house foundation is removed, the soil foundation is reinforced by a soil foundation cofferdam to prevent the soil foundation from loosening, the penetrating channel steel is mutually connected without gaps, and the integral platform capable of longitudinally translating is formed under the soil foundation of the moved house, two layers of rolling round steel are paved on a newly-built hard foundation, the lower layer is longitudinal, the upper layer is transverse, and the steel structure platform constructed by inserting channel steel and connecting steel beams in a pushing mode according to the prior art is pushed to move horizontally to the place where the house is moved horizontally.
Above-mentioned traditional building foundation treatment method before consolidating all adopts artifical hammer chisel, mechanical hammer to beat, pneumatic pick, hydraulic breaking hammer breakage etc. to demolish old basis usually, and these traditional methods are excavation volume in the work progress is big, artifical construction efficiency is low, and directly squeezes into in old basis and alternate the channel-section steel and consolidate etc. the mode can produce great vibration, causes the damage to the building easily in the work progress, is unfavorable for protecting the building matter volume of whole translation.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a method for reinforcing the integral translation foundation of a building, which comprises the steps of adopting a wire saw machine to perform gradual block penetrating cutting on the bottom of the foundation of the building, then adopting a prefabricated hollow box girder to gradually replace soil in a cut main supporting block, and connecting two ends of the prefabricated hollow box girder with a ring girder to form an integral foundation after the bottom of the foundation of the whole building is replaced by the prefabricated hollow box girder; adopt the rope saw to distribute the cutting gradually, replace the prefabricated hollow box girder basis with the old foundation soil body again, at the work progress excavation volume less, the efficiency of construction is high, can not produce the vibration impact, can not produce a large amount of dust, can not cause the damage to the building on the basis, and bulk strength is high after the foundation stabilization, does benefit to the translation protection building more.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for reinforcing the integral translation foundation of a building comprises the following steps:
s1, excavating a working pit at the periphery of the building foundation, and arranging a wire saw in or outside the working pit;
s2, utilizing a rope sawing machine to perform block penetrating cutting on the building foundation, sequentially dividing the bottom of the building foundation into a main supporting block and an auxiliary supporting block which are continuously arranged, and then sequentially hollowing out the auxiliary supporting block by adopting high-pressure water column impact or an automatic drilling machine to form a reserved construction channel convenient for replacing soil in the main supporting block;
s3, replacing soil in the main support block with prefabricated hollow box girders, wherein the front ends of the prefabricated hollow box girders are provided with high-pressure impact water guns or spiral drilling machines capable of crushing the soil in the main support block, sludge conveying devices are arranged in the prefabricated hollow box girders to convey the sludge into the operation pits for centralized discharge, the prefabricated hollow box girders feed while discharging the sludge, and the tail of the former prefabricated hollow box girder is connected with the other prefabricated hollow box girder after the former prefabricated hollow box girder is fed in place;
s4, after the soil in one main supporting block is replaced by the prefabricated hollow box girder, continuing to replace the soil in the other main supporting block until the replacement of the soil at the bottom of the whole building foundation is completed, and arranging a plurality of prefabricated hollow box girders arranged side by side at the bottom of the whole building foundation;
s5, arranging reinforcing ribs in the prefabricated hollow box girder at the bottom of the building foundation, pouring concrete, pouring a ring girder in the operation pit, and connecting two ends of the prefabricated hollow box girder and the ring girder together to form an integral foundation.
Furthermore, the rope sawing machines arranged in the operation pit comprise more than two rope sawing machines, the rope sawing machines are respectively arranged in two adjacent tunnels in the operation pit, and a running track of the rope sawing machines is paved in the operation pit.
Further, the method for performing the block penetrating cutting by using the wire saw in the step S2 includes: and guiding a cutting rope to cut from one side of the operation pit by using the rope sawing machine and the first guide wheel set, respectively cutting an upper cutting face and a lower cutting face in the main supporting block, and respectively cutting a first connecting face and a second connecting face between the main supporting block and the auxiliary supporting block by using the rope sawing machine and the second guide wheel set in the other side of the operation pit, so that the main supporting block and the auxiliary supporting block are sequentially and crossly cut until the division of the bottom of the whole building foundation is completed.
Furthermore, the upper cutting surface and the lower cutting surface are processed by two steps by adopting one rope saw, or the two rope saws are respectively used for processing.
Furthermore, the two ends of the prefabricated hollow box girder are provided with connecting plates, the prefabricated hollow box girder at the front end is internally provided with an installation frame close to the connecting plates, and the high-pressure impact water gun or the spiral drilling machine is fixed on the installation frame.
Furthermore, the cross section of the main body of the prefabricated hollow box girder is in a hollow rectangular shape or a hollow ladder shape with a large top and a small bottom, and the height dimension of the prefabricated hollow box girder is larger than or equal to that of the main support block.
Furthermore, the outer side walls at two ends of the prefabricated hollow box girder are provided with anchoring devices which are convenient for being fixedly connected with the ring girder, and the bottom surface of the prefabricated hollow box girder is provided with a jack supporting platform.
Further, a pushing device is arranged in the operation pit, and a pushing carrier roller for supporting the prefabricated hollow box girder and a hydraulic pushing rod for pushing the prefabricated hollow box girder are arranged in the pushing device.
Furthermore, a slag collecting pool connected with the output end of the sludge conveying device is arranged in the operation pit, and an automatic slag discharging device is arranged in the slag collecting pool.
The invention has the following beneficial effects:
1. firstly, excavating an operation pit at the periphery of a building foundation, gradually cutting the bottom of the building foundation in blocks by adopting a wire saw machine in or outside the operation pit, then gradually replacing soil in a main support block which is cut in blocks by adopting prefabricated hollow box girders, gradually replacing the soil at the bottom of the whole building foundation into a plurality of prefabricated hollow box girders which are arranged side by side, and then connecting two ends of the prefabricated hollow box girders with ring girders to form an integral foundation; according to the invention, the rope saw is adopted to gradually cut the old foundation soil body in a distributed manner, and then the old foundation soil body is hollowed and replaced into the prefabricated hollow box girder foundation, so that large vibration impact cannot be generated in the cutting, soil excavation and replacement construction processes, and a large amount of dust cannot be generated, the size of the prefabricated hollow box girder is only required to meet the support strength and the installation space of small equipment, no manual excavation operation space needs to be reserved, the excavation amount in the construction process is small, the construction efficiency is high, no damage can be caused to the building on the foundation, the integral strength of the foundation after the foundation is reinforced is high, and the translation protection of the building is facilitated;
2. the rope saw cutting process is introduced into the building foundation reinforcement processing method, so that the dynamic impact can be reduced as much as possible, the rope saw is favorable for carrying out block penetrating cutting, the rope saw and the guide wheel sets which are arranged in two directions are utilized for carrying out combined cutting during cutting, the rope saw is skillfully arranged, not only can be used for cutting a horizontal upper cutting surface and a horizontal lower cutting surface, but also can be used for cutting a vertical or inclined first connecting surface and a vertical or inclined second connecting surface, and therefore a main supporting block and an auxiliary supporting block which are sequentially and continuously arranged and connected are gradually cut at the bottom of a building foundation in a block-by-block manner, the construction section is small, the construction excavation amount can be reduced, and the soil in the main supporting block and the auxiliary supporting block can be conveniently crushed and excavated subsequently; the rope saw is cut into the side surface of one side of the operation pit during cutting, a drilling machine is not needed for machining a rope saw through hole, and vibration impact in the machining process is greatly reduced;
3. according to the invention, the soil body in the auxiliary supporting block is broken and excavated by using the high-pressure impact water gun, the excavation breaking effect is good, the efficiency is high, the vibration impact on the whole foundation caused by the construction process of breaking after the rope saw is used for cutting is small, the soil body in the auxiliary supporting block is excavated to be a reserved construction channel for facilitating the replacement of the soil body in the main supporting block, a tool can conveniently stretch into and discharge sand and stone blocks, and the soil body in the subsequent main supporting block can be broken and excavated;
4. the high-pressure impact water gun or the spiral drilling machine capable of crushing soil in the main support block is arranged at the front end of the prefabricated hollow box girder, the high-pressure impact water gun or the spiral drilling machine can be used in a combined mode or used alone, the height size of the prefabricated hollow box girder can be made smaller so as to reduce construction excavation amount, a sludge conveying device is arranged in the prefabricated hollow box girder to convey sludge into an operation pit for centralized discharge, the prefabricated hollow box girder discharges the sludge while feeding, the tail part of the prefabricated hollow box girder can be uninterruptedly connected with another prefabricated hollow box girder, so that the soil in one main support block can be continuously replaced, the vibration impact in the replacement construction process is small, the sludge is discharged while pushing and feeding, and the building is ensured not to be settled and deformed in the replacement process;
5. the invention adopts the pushing device to gradually push and feed the prefabricated hollow box girder to replace the soil body in the main supporting block, and adopts hydraulic pushing to be stable and reliable.
Drawings
FIG. 1 is a schematic top plan view of the method for reinforcing the foundation of the building by integral translation according to the present invention;
FIG. 2 is a schematic cross-sectional view of the method for reinforcing the foundation of the building by integral translation according to the present invention;
FIG. 3 is a schematic view of the rope saw cutting the main and auxiliary support blocks of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic perspective view of a portion of a precast hollow box girder according to the present invention;
FIG. 6 is a schematic cross-sectional view of a portion of a precast hollow box girder according to the present invention;
FIG. 7 is a perspective view of the pushing device of the present invention;
fig. 8 is a schematic top plan view of a treated building foundation incorporating the present invention.
Description of reference numerals:
1. a building foundation; 11. a main support block; 111. cutting the upper surface; 112. a lower cutting surface; 113. a first connection face; 114. a second connection face; 12. an auxiliary support block; 13. reserving a construction channel; 14. a ring beam; 2. an operation pit; 21. a slag collecting tank; 3. a wire saw; 31. a first guide wheel set; 32. a second guide wheel set; 4. prefabricating a hollow box girder; 41. a connecting plate; 42. a mounting frame; 43. an anchoring device; 44. the jack supports the platform; 5. a high pressure impact water gun; 6. a auger drill; 7. a sludge conveying device; 8. a pushing device; 81. pushing the carrier roller; 82. and (6) pushing the rod by hydraulic pressure.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
referring to fig. 1-8, a method for reinforcing a foundation of a building by integral translation comprises the following steps:
s1, excavating a working pit 2 on the periphery of the building foundation 1, and arranging a rope saw 3 in the working pit 2 or outside the working pit 2;
s2, utilizing the rope sawing machine 3 to perform block penetrating cutting on the building foundation 1, sequentially dividing the bottom of the building foundation 1 into a main supporting block 11 and an auxiliary supporting block 12 which are continuously arranged, and then sequentially hollowing out the auxiliary supporting block 12 by adopting high-pressure water column impact or an automatic drilling machine to form a reserved construction channel 13 which is convenient for soil replacement in the main supporting block 11; the high pressure water column may be generated by a high pressure water gun of the prior art, and the automatic drilling machine may be a down-the-hole drilling machine.
S3, replacing soil in the main support block 11 with a prefabricated hollow box girder 4, wherein the front end of the prefabricated hollow box girder 4 is provided with a high-pressure impact water gun 5 or a spiral drilling machine 6 capable of crushing the soil in the main support block 11, a sludge conveying device 7 is arranged in the prefabricated hollow box girder 4 to convey sludge into the operation pit 2 for centralized discharge, the prefabricated hollow box girder 4 feeds while discharging the sludge, and the tail of the former prefabricated hollow box girder 4 is connected with the other prefabricated hollow box girder 4 after the former prefabricated hollow box girder 4 is fed in place; the high-pressure impact water gun 5 or the spiral drilling machine 6 is a universal device in the technical field of engineering.
S4, after the soil in one main supporting block 11 is replaced by the prefabricated hollow box girder 4, continuing to replace the soil in the other main supporting block 11 until the replacement of the bottom of the whole building foundation 1 is completed, and arranging a plurality of prefabricated hollow box girders 4 which are arranged side by side at the bottom of the whole building foundation 1;
s5, arranging reinforcing ribs in the prefabricated hollow box girder 4 at the bottom of the building foundation 1, pouring concrete, pouring a ring girder 14 in the operation pit 2, and connecting the two ends of the prefabricated hollow box girder 4 and the ring girder 14 together to form an integral foundation.
During construction, the section size of the reserved construction channel 13 is reduced as much as possible, so that the top of the prefabricated hollow box girder 4 is close to the top of the prefabricated hollow box girder as much as possible. In some construction working conditions, the section size of the reserved construction channel 13 can be the kerf of the rope saw, the kerf width can be 8-20mm, and the reserved construction channel 13 is not required to be constructed by high-pressure water column impact or an automatic drilling machine, so that the construction procedures can be reduced, and the cost is saved.
The rope sawing machine 3 arranged in the operation pit 2 comprises more than two rope sawing machines, the rope sawing machines 3 are respectively arranged in two adjacent tunnels in the operation pit 2, and an operation track of the rope sawing machine 3 is paved in the operation pit 2.
Referring to fig. 3 to 4, the method for performing the block penetrating cutting by using the wire saw 3 in step S2 includes: the rope sawing machine 3 and the first guide wheel set 31 are used for guiding a cutting rope to cut in from one side of the working pit 2, the upper cutting surface 111 and the lower cutting surface 112 in the main supporting block 11 are respectively cut, the rope sawing machine 3 and the second guide wheel set 32 in the other side of the working pit 2 are used for respectively cutting a first connecting surface 113 and a second connecting surface 114 between the main supporting block 11 and the auxiliary supporting block 12 (during construction, a diamond rope saw is arranged between the upper cutting surface 111 and the lower cutting surface 112 to cut the first connecting surface 113, after the first connecting surface 113 is cut, the rope sawing machine 3 and the second guide wheel set 32 are moved, and a diamond rope saw is arranged between the upper cutting surface 111 and the lower cutting surface 112 to cut the second connecting surface 114), so that the main supporting block 11 and the auxiliary supporting block 12 are sequentially cut in a crossed manner until the bottom of the whole building foundation 1 is cut. The wire saw 3 may be a conventional diamond wire saw, and during actual construction, the upper cutting plane 111 and the lower cutting plane 112 in the bottom of the building foundation 1 may be cut into the first connecting plane 113 and the second connecting plane 114 without waiting for complete cutting, so long as the upper cutting plane 111 and the lower cutting plane 112 are cut to a certain distance respectively to meet the space requirement of the first connecting plane 113 and the second connecting plane 114 during cutting operation, so as to reduce the waiting time during process handover.
The upper cutting plane 111 and the lower cutting plane 112 may be processed in two steps using one wire saw 3, or may be processed separately using two wire saws 3.
Referring to fig. 5 to 6, connecting plates 41 are arranged at two ends of the prefabricated hollow box girder 4, a mounting rack 42 is arranged at a position, close to the connecting plate 41, inside the prefabricated hollow box girder 4 arranged at the foremost end, and the high-pressure impact water gun 5 or the spiral drilling machine 6 is fixed on the mounting rack 42. The outer side walls at two ends of the prefabricated hollow box girder 4 are provided with anchoring devices 43 which are convenient to be fixedly connected with the ring girder 14, and the anchoring devices 43 comprise embedded steel plates and anchoring nails which are convenient to fixedly connect the prefabricated hollow box girder 4 and the ring girder 14 to form an integral foundation; the bottom surface of the prefabricated hollow box girder 4 is provided with a jack supporting platform 44, a hydraulic jack mounting platform is arranged in the operation pit 2 below the jack supporting platform 44, and after a building foundation needing to be translated is well reinforced, the hydraulic jack is arranged at the jack supporting platform 44 on the bottom surface of the prefabricated hollow box girder 4, so that the subsequent jacking and translation operation of the building is facilitated.
The main body section of the prefabricated hollow box girder 4 is in a hollow rectangular shape or a hollow ladder shape with a large top and a small bottom, and the height dimension of the prefabricated hollow box girder 4 is more than or equal to that of the main support block 11.
The pushing device 8 is arranged in the operation pit 2, and a pushing carrier roller 81 for supporting the prefabricated hollow box girder 4 and a hydraulic push rod 82 for pushing the prefabricated hollow box girder 4 are arranged in the pushing device 8. During construction, conventional construction equipment such as a forklift and a crane is required to be equipped, and further description is omitted.
And a slag collecting pool 21 connected with the output end of the sludge conveying device 7 is arranged in the operation pit 2, an automatic slag discharging device is arranged in the slag collecting pool 21, and the automatic slag discharging device adopts complete equipment in the prior art. After the building foundation reinforcement construction is completed, the slag collecting tank 21 is filled and leveled.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A method for reinforcing the integral translation foundation of a building is characterized by comprising the following steps: the method comprises the following steps:
s1, excavating a working pit (2) on the periphery of a building foundation (1), and arranging a wire saw (3) in the working pit (2) or outside the working pit (2);
s2, carrying out block penetrating cutting on the building foundation (1) by using a rope saw (3), sequentially dividing the bottom of the building foundation (1) into a main supporting block (11) and an auxiliary supporting block (12) which are continuously arranged, and then sequentially hollowing out the auxiliary supporting block (12) by using high-pressure water column impact or an automatic drilling machine to form a reserved construction channel (13) convenient for replacing soil in the main supporting block (11); the method for carrying out the block penetrating cutting by using the wire saw (3) comprises the following steps: guiding a cutting rope to cut from one side of a working pit (2) by using the rope sawing machine (3) and the first guide wheel set (31), respectively cutting an upper cutting face (111) and a lower cutting face (112) in the main supporting block (11), and then respectively cutting a first connecting face (113) and a second connecting face (114) between the main supporting block (11) and the auxiliary supporting block (12) by using the rope sawing machine (3) and the second guide wheel set (32) in the other side of the working pit (2), so as to sequentially and crossly cut the main supporting block (11) and the auxiliary supporting block (12) until the bottom of the whole building foundation (1) is cut;
s3, replacing soil in the main support block (11) with a prefabricated hollow box girder (4), arranging a high-pressure impact water gun (5) or a spiral drilling machine (6) capable of crushing the soil in the main support block (11) at the front end of the prefabricated hollow box girder (4), arranging a sludge conveying device (7) in the prefabricated hollow box girder (4) to convey the sludge into the operation pit (2) for centralized discharge, feeding the prefabricated hollow box girder (4) while discharging the sludge, and continuously connecting the tail of the prefabricated hollow box girder (4) with another prefabricated hollow box girder (4) after the previous prefabricated hollow box girder (4) is fed in place;
s4, after the soil in one main supporting block (11) is replaced by the prefabricated hollow box girder (4), continuing to replace the soil in the other main supporting block (11) until the replacement of the soil at the bottom of the whole building foundation (1) is completed, and arranging a plurality of prefabricated hollow box girders (4) which are arranged side by side at the bottom of the whole building foundation (1);
s5, arranging reinforcing ribs in the prefabricated hollow box girder (4) at the bottom of the building foundation (1) and pouring concrete, pouring a ring girder (14) in the operation pit (2), and connecting two ends of the prefabricated hollow box girder (4) and the ring girder (14) together to form an integral foundation.
2. The method for reinforcing the integral translation foundation of the building according to claim 1, wherein the method comprises the following steps: the rope sawing machine (3) arranged in the operation pit (2) comprises more than two rope sawing machines, the rope sawing machines (3) are respectively arranged in two adjacent tunnels in the operation pit (2), and a running track of the rope sawing machines (3) is paved in the operation pit (2).
3. The method for reinforcing the integral translation foundation of the building according to claim 2, wherein the method comprises the following steps: the upper cutting surface (111) and the lower cutting surface (112) are processed by one rope saw (3) in two steps, or the two rope saw (3) are respectively used for processing.
4. The method for reinforcing the integral translation foundation of the building according to claim 1, wherein the method comprises the following steps: the two ends of the prefabricated hollow box girder (4) are provided with connecting plates (41), the front end is arranged at the position, close to the connecting plates (41), inside the prefabricated hollow box girder (4) and provided with an installation frame (42), and a high-pressure impact water gun (5) or a spiral drilling machine (6) is fixed on the installation frame (42).
5. The method for reinforcing the integral translation foundation of the building according to claim 1 or 4, wherein the method comprises the following steps: the cross section of the main body of the prefabricated hollow box girder (4) is in a hollow rectangular shape or a hollow trapezoid shape with a large upper part and a small lower part, and the height dimension of the prefabricated hollow box girder (4) is more than or equal to that of the main support block (11).
6. The method for reinforcing the integral translation foundation of the building according to claim 1 or 4, wherein the method comprises the following steps: the outer side walls at the two ends of the prefabricated hollow box girder (4) are provided with anchoring devices (43) which are convenient to be fixedly connected with the ring girder (14), and the bottom surface of the prefabricated hollow box girder (4) is provided with a jack supporting platform (44).
7. The method for reinforcing the integral translation foundation of the building according to claim 1, wherein the method comprises the following steps: a pushing device (8) is arranged in the operation pit (2), and a pushing carrier roller (81) for supporting the prefabricated hollow box girder (4) and a hydraulic pushing rod (82) for pushing the prefabricated hollow box girder (4) are arranged in the pushing device (8).
8. The method for reinforcing the integral translation foundation of the building according to claim 1, wherein the method comprises the following steps: and a slag collecting tank (21) connected with the output end of the sludge conveying device (7) is arranged in the operation pit (2), and an automatic slag discharging device is arranged in the slag collecting tank (21).
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| CN201910979260.0A CN110700625B (en) | 2019-10-15 | 2019-10-15 | Method for reinforcing integral translation foundation of building |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101054803A (en) * | 2007-05-15 | 2007-10-17 | 河北省建筑科学研究院 | Method for ancient architecture base integral support and change |
| CN105220894A (en) * | 2015-11-16 | 2016-01-06 | 中国华西企业有限公司 | The harmless cutting disassembling structure of inner support rope saw and construction thereof |
| CN207549102U (en) * | 2017-12-07 | 2018-06-29 | 浙江八达隧道工程股份有限公司 | A kind of precast box beam steel bar colligation mold |
| CN108457303A (en) * | 2018-03-28 | 2018-08-28 | 四川省建筑科学研究院 | A method of increasing underground parking newly under existing building |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054803A (en) * | 2007-05-15 | 2007-10-17 | 河北省建筑科学研究院 | Method for ancient architecture base integral support and change |
| CN105220894A (en) * | 2015-11-16 | 2016-01-06 | 中国华西企业有限公司 | The harmless cutting disassembling structure of inner support rope saw and construction thereof |
| CN207549102U (en) * | 2017-12-07 | 2018-06-29 | 浙江八达隧道工程股份有限公司 | A kind of precast box beam steel bar colligation mold |
| CN108457303A (en) * | 2018-03-28 | 2018-08-28 | 四川省建筑科学研究院 | A method of increasing underground parking newly under existing building |
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