CN109930631B - Vibration isolation structure of building foundation and construction method thereof - Google Patents
Vibration isolation structure of building foundation and construction method thereof Download PDFInfo
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- CN109930631B CN109930631B CN201910285925.8A CN201910285925A CN109930631B CN 109930631 B CN109930631 B CN 109930631B CN 201910285925 A CN201910285925 A CN 201910285925A CN 109930631 B CN109930631 B CN 109930631B
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Abstract
The invention relates to the technical field of building vibration reduction, and discloses a building foundation vibration isolation structure and a construction method thereof, wherein the building foundation vibration isolation structure comprises a first side vibration isolation assembly and a second side vibration isolation assembly which are sequentially arranged on the outer side of a building foundation side wall from bottom to top; the first side vibration isolation assembly comprises a brick bed-jig, a first waterproof layer and a first vibration reduction layer which are sequentially overlapped from outside to inside, and the first vibration reduction layer is arranged on the outer side surface of the building foundation side wall; the second side vibration isolation assembly comprises a second waterproof layer and a second vibration reduction layer which are sequentially overlapped from inside to outside, and the second waterproof layer is adhered to the outer side surface of the building foundation side wall; the upper edge of the first waterproof layer is connected with the lower edge of the second waterproof layer. The vibration isolation assembly of the building foundation side wall is divided into the upper section and the lower section by the building foundation vibration isolation structure, the construction is simple, the construction cost is saved, the construction space is optimized, the waterproof and vibration reduction effects are excellent, and the conditions are provided for the hot melting paving mode of the waterproof coiled material.
Description
Technical Field
The invention relates to the technical field of building vibration reduction, in particular to a building foundation vibration isolation structure and a construction method thereof.
Background
With the continuous promotion of the urban process in China, available land resources are increasingly scarce, and rail transit stations, vehicle section upper covers and along-line property development are rapid. Although the rail transit is convenient for people to travel daily, the problems of vibration and noise pollution generated by the rail transit are not ignored. The ground, i.e. overhead lines, mainly use noise as a main pollution source, and the underground lines mainly use vibration and secondary structural noise. In some areas, vibration caused by rail traffic has become one of the most sensitive environmental vibration sources for the public, and it is necessary to adopt vibration treatment measures for sensitive buildings in high vibration areas to create a peaceful and comfortable living environment.
Aiming at the vibration problem caused by rail transit, vibration reduction and noise reduction measures mainly comprise three types: vibration reduction of a track vibration source, vibration isolation of a propagation path and vibration isolation of a building. At present, vibration isolation spring supports are mostly adopted in the self vibration isolation method of the building, after the building foundation is isolated, structural design professions are needed to deeply cooperate and correspondingly adjust, and structural designs of an isolation area and a non-isolation area can meet relevant specifications, so that design difficulty and cost are increased. In addition, spring mounts are not suitable for use in high-rise buildings. In comparison, the method for paving the vibration damping pad on the building foundation is simpler and more convenient, has equivalent vibration damping effect and can be applied to multi-layer and high-rise buildings. Besides the vibration reduction requirement, the building foundation also needs to be paved with waterproof coiled materials to ensure the waterproof performance, but the gap between the outer wall of the building foundation and the foundation pit is smaller, and the vibration reduction pad and the waterproof coiled materials are difficult to be paved. In addition, open fire is needed to be used for paving the common waterproof coiled materials, hot melting paving is realized, the vibration damping pad is made of high polymer materials such as rubber or resin, and the like, and the vibration damping pad can be melted and deformed under the condition of encountering flame, so that the performance of the vibration damping pad is affected.
Disclosure of Invention
The embodiment of the invention provides a building foundation vibration isolation structure and a construction method thereof, which are used for solving the problems that the construction is difficult and the laying of a waterproof coiled material and a vibration reduction pad is difficult to consider in the prior art.
The embodiment of the invention provides a building foundation vibration isolation structure, which comprises a first side vibration isolation assembly and a second side vibration isolation assembly which are sequentially arranged on the outer side of a building foundation side wall from bottom to top; the first side vibration isolation assembly comprises a brick molding bed, a first waterproof layer and a first vibration reduction layer which are sequentially overlapped from outside to inside, and the first vibration reduction layer is arranged on the outer side face of the building foundation side wall; the second side vibration isolation assembly comprises a second waterproof layer and a second vibration reduction layer which are sequentially overlapped from inside to outside, and the second waterproof layer is attached to the outer side face of the building foundation side wall; the upper edge of the first waterproof layer is connected with the lower edge of the second waterproof layer.
The building foundation slab is connected with the building foundation side wall; the bottom vibration isolation assembly comprises a third waterproof layer, a third vibration reduction layer and a protective layer which are sequentially overlapped from bottom to top, and the protective layer is arranged on the lower side surface of the building foundation slab; the third vibration reduction layer is connected to the first vibration reduction layer, and the third waterproof layer is connected to the first waterproof layer.
The first vibration reduction layer, the second vibration reduction layer and the third vibration reduction layer are formed by splicing a plurality of vibration reduction pads, and seams between any two adjacent vibration reduction pads are sealed through waterproof adhesive tapes.
Wherein, still lay the plastic film between protective layer and the third damping layer.
And the lower side surface of the third waterproof layer is also provided with a concrete cushion layer, and the lower part of the brick bed-jig is connected with the concrete cushion layer.
The second side vibration isolation assembly further comprises an insulation layer attached to the outer side face of the second vibration reduction layer.
And a protection wall is further arranged between the first vibration reduction layer and the building foundation side wall.
Wherein, the first vibration reduction layer and the second vibration reduction layer are all closed-pore polyurethane foaming materials.
The embodiment of the invention also provides a construction method for manufacturing the building foundation vibration isolation structure, which comprises the following steps:
building a brick wall in the foundation pit to form a brick bed-jig;
paving a first waterproof layer on the inner side surface of the brick bed-jig, and paving a first vibration reduction layer on the inner side surface of the first waterproof layer to form a first side vibration isolation assembly;
building a building foundation side wall from bottom to top along the inner side surface of the first side vibration isolation assembly until reaching a preset height;
paving a second waterproof layer on the outer side surface of the side wall between the upper side of the first side vibration isolation assembly and the top end of the building foundation side wall, and connecting the upper edge of the first waterproof layer and the lower edge of the second waterproof layer;
and paving a second vibration reduction layer on the outer side surface of the second waterproof layer to form a second lateral vibration isolation assembly.
After the first vibration reduction layer is paved on the inner side surface of the first waterproof layer, before the second waterproof layer is paved on the outer side surface of the side wall between the upper side of the first side vibration isolation assembly and the top end of the building foundation side wall, the method further comprises the following steps: and plastering the upper edge of the first vibration reduction layer.
According to the building foundation vibration isolation structure and the construction method thereof, vibration isolation and water prevention of the building foundation side wall are achieved through the first side vibration isolation assembly and the second side vibration isolation assembly which are sequentially arranged on the outer side of the building foundation side wall from bottom to top, a brick bed-jig is built in a foundation pit, then a first waterproof layer and a first vibration reduction layer are sequentially paved on the inner side surface of the brick bed-jig, and then the building foundation side wall is built depending on the inner side of the first side vibration isolation assembly. After the building foundation side wall is built to a preset height, a second waterproof layer and a second vibration reduction layer are sequentially paved on the outer side of a part of the side wall higher than the first side vibration isolation assembly, and the edges of the first waterproof layer and the second waterproof layer are connected, so that the overall waterproof of the whole building foundation side wall is realized. The construction space is optimized, the construction sequence of paving the first waterproof layer and paving the first vibration reduction layer is realized, meanwhile, after the construction of the building foundation side wall is completed, the construction space provided by the brick tire is also utilized for carrying out waterproof and vibration reduction construction on the upper area of the building foundation side wall, the construction sequence of paving the second waterproof layer and paving the second vibration reduction layer is also realized, and the conditions are provided for the hot melting paving mode of the waterproof coiled material. The vibration isolation assembly of the building foundation side wall is divided into an upper section and a lower section by the building foundation vibration isolation structure, the construction is simple, the construction cost is saved, the construction space is optimized, and the waterproof and vibration reduction effects are excellent. Meanwhile, the building foundation vibration isolation structure is also suitable for vibration isolation of equipment adopting a box foundation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of a building foundation vibration isolation structure in accordance with an embodiment of the present invention;
reference numerals illustrate:
1: building foundation side walls; 2: a first side vibration isolation assembly; 21: brick moulding bed;
22: a first waterproof layer; 23: a first vibration damping layer; 24: a first gray layer;
25: a first protective wall; 3: a second side vibration isolation assembly; 31: a second waterproof layer;
32: a second vibration damping layer; 33: a heat preservation layer; 34: a second protection wall;
35: a second gray soil layer; 4: building foundation slabs; 5: a bottom vibration isolation assembly;
51: a protective layer; 52: a third vibration damping layer; 53: a third waterproof layer;
54: a concrete cushion layer; 6: and (5) a raw soil layer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In describing embodiments of the present invention, it should be noted that the terms "first," "second," and "third" are used for clarity in describing the numbering of product components and do not represent any substantial distinction unless explicitly stated or defined otherwise. The directions of the upper, the lower, the inner and the outer are all the directions shown in the drawings. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.
It should be noted that the term "coupled" is to be interpreted broadly, as being able to be coupled directly or indirectly via an intermediary, unless explicitly stated or defined otherwise. The specific meaning of the terms in the embodiments of the invention will be understood by those of ordinary skill in the art in a specific context.
Fig. 1 is a cross-sectional view of a building foundation vibration isolation structure according to an embodiment of the present invention, as shown in fig. 1, where the building foundation vibration isolation structure according to the embodiment of the present invention includes a first side vibration isolation assembly 2 and a second side vibration isolation assembly 3 sequentially disposed outside a building foundation side wall 1 from bottom to top. The first side vibration isolation assembly 2 comprises a brick bed-jig 21, a first waterproof layer 22 and a first vibration reduction layer 23 which are sequentially overlapped from outside to inside, and the first vibration reduction layer 23 is arranged on the outer side face of the building foundation side wall 1.
Specifically, the brick bed-jig 21 can be made into a template by adopting standard bricks, and the height, thickness and position of the brick bed-jig 21 can be specifically determined according to the size of a field foundation pit and the construction requirement of a building foundation. The brick bed mould 21 can adopt sand lime brick, and the thickness can be 220mm-260mm. The building foundation side wall 1 can be made of reinforced concrete.
The first waterproof layer 22 may be an asphalt waterproof roll or a polymer modified asphalt waterproof roll, and the use conditions are not limited. The asphalt waterproof coiled material belongs to a low-grade waterproof coiled material, is suitable for projects with low waterproof grade, and has the lowest price; the high polymer modified asphalt waterproof coiled material belongs to a medium-high grade waterproof coiled material, is suitable for projects with higher waterproof grade requirements, has moderate price, and has the advantages of no sagging at high temperature, no brittle fracture at low temperature, high tensile strength, high elongation and the like, and has higher cost performance. The two kinds of asphalt waterproof coiled materials are usually adhered tightly to the surface of a building by using a hot melt paving method, and open fire is required to be used.
The second side vibration isolation assembly 3 comprises a second waterproof layer 31 and a second vibration reduction layer 32 which are sequentially overlapped from inside to outside, and the second waterproof layer 31 is attached to the outer side face of the building foundation side wall 1. Likewise, the second waterproof layer 31 may be an asphalt waterproof roll or a polymer modified asphalt waterproof roll.
The upper edge of the first waterproof layer 22 is connected to the lower edge of the second waterproof layer 31. Specifically, an adhesive may be applied to the joint between the upper edge of the first waterproof layer 22 and the lower edge of the second waterproof layer 31, and the joint may be firmly adhered by rolling. When the first waterproof layer 22 is paved, a waterproof coiled material with a certain length is reserved at the upper part of the first waterproof layer 22, after the building of the building foundation side wall 1 is completed, the reserved waterproof coiled material is paved on the building foundation side wall 1, and then the lower edge of the second waterproof layer 31 is arranged at the upper part of the first waterproof layer 22.
According to the building foundation vibration isolation structure, vibration isolation and water prevention of the building foundation side wall are achieved through the first side vibration isolation assembly and the second side vibration isolation assembly which are sequentially arranged on the outer side of the building foundation side wall from bottom to top. The construction space is optimized, the construction sequence of paving the first waterproof layer and paving the first vibration reduction layer is realized, meanwhile, after the construction of the building foundation side wall is completed, the construction space provided by the brick tire is also utilized for carrying out waterproof and vibration reduction construction on the upper area of the building foundation side wall, the construction sequence of paving the second waterproof layer and paving the second vibration reduction layer is also realized, and the conditions are provided for the hot melting paving mode of the waterproof coiled material. The vibration isolation assembly of the building foundation side wall is divided into an upper section and a lower section by the building foundation vibration isolation structure, the construction is simple, the construction cost is saved, the construction space is optimized, and the waterproof and vibration reduction effects are excellent. Meanwhile, the building foundation vibration isolation structure is also suitable for vibration isolation of equipment adopting a box foundation.
Further, as shown in fig. 1, the building foundation vibration isolation structure in the present embodiment further includes a bottom vibration isolation assembly 5 provided at the lower side of the building foundation mat 4. The building foundation mat 4 can be made of reinforced concrete and is connected with the building foundation side wall 1.
The bottom vibration isolation assembly 5 comprises a third waterproof layer 53, a third vibration reduction layer 52 and a protective layer 51 which are sequentially overlapped from bottom to top, and the protective layer 51 is arranged on the lower side surface of the building foundation slab 4. The third vibration damping layer 52 is connected to the first vibration damping layer 23, and the third waterproof layer 53 is connected to the first waterproof layer 22. Specifically, the thickness of the protective layer 51 may be 40mm to 60mm. In one particular embodiment, the protective layer 51 is a fine stone concrete layer of 50mm thickness. Likewise, the third waterproof layer 53 may be an asphalt waterproof roll or a polymer modified asphalt waterproof roll. More specifically, a fine stone concrete waterproof layer, which may have a thickness of 40mm to 60mm, is further provided between the third vibration reduction layer 52 and the third waterproof layer 53.
Further, the first damping layer 23, the second damping layer 32 and the third damping layer 52 are each formed by splicing a plurality of damping pads, and the joint between any two adjacent damping pads is sealed by waterproof adhesive tape. In addition, the joint can be sealed in a manner of filling adhesive. The sealing performance of the joint can be improved through the adhesive tape or the adhesive, so that the bridge is prevented from being formed by penetrating into the gap during concrete pouring, and the vibration reduction effect is further affected.
Further, a plastic film (not shown in the figure) is laid between the protective layer 51 and the third vibration reduction layer 52. The plastic film may be a Polyethylene (PE) film, a Polypropylene (PP) film, or a Polyethylene terephthalate (Polyethylene Terephthalate, PET) film. Leakage of slurry can be further prevented by providing a plastic film.
Further, as shown in fig. 1, a concrete cushion layer 54 is further disposed on the lower side of the third waterproof layer 53, and the bottom surface of the brick bed-jig 21 is connected to the concrete cushion layer 54. Specifically, the original soil layer 6 of the foundation pit is below the concrete cushion layer 54, the original soil layer 6 is tamped, then the concrete cushion layer with the concrete number of C15 is paved, and the original slurry light-driving leveling procedure is performed on the upper surface of the concrete cushion layer 54. The thickness of the concrete pad 54 may be between 80mm and 120 mm. In one particular embodiment, the concrete pad 54 is a C15 concrete pad having a thickness of 100 mm.
Further, as shown in fig. 1, the second side vibration isolation assembly 3 further includes a heat insulating layer 33 attached to the outer side of the second vibration damping layer 32. Specifically, the insulating layer 33 may be filled with an insulating material such as polystyrene board. In one particular embodiment, the insulating layer 33 is a 50mm thick polystyrene board.
Further, a first protection wall 25 is also arranged between the first vibration reduction layer 23 and the building foundation side wall 1. Specifically, the first protection wall 25 is built by using mortar bricks. The protection wall can prevent the vibration damping pad from being damaged when the bottom plate steel bars are bound.
Further, a second protection wall 34 is further provided on the outer side surface of the heat insulation layer 33, and specifically, the first protection wall 25 is built by using mortar bricks. The damping pad and the waterproof coiled material can be protected by the protection wall.
Further, a first gray layer 24 is further laid on the outer side of the brick bed-jig 21, and a second gray layer 35 is further laid on the outer side of the second protection wall 34. The first and second gray soil layers 24, 35 are each compacted in layers with a gray soil ratio of 2:8.
Further, the first damping layer 23, the second damping layer 32 and the third damping layer 52 are all fully closed cell foam materials. Still further, the fully-closed cell foam material includes a fully-closed cell polyurethane foam material. The thickness of the damping layer can be determined according to the damping requirements of the project. Through using full closed hole foaming material as the damping pad, can avoid water to enter into the open pore structure of damping pad in, solved current commonly used polyurethane or rubber material and be open-closed pore hybrid structure, can not effectively prevent water to get into the damping pad, and then weaken the problem of damping effect. The method is particularly suitable for the situation that the building foundation mat is positioned below the ground water level.
Further, the first waterproof layer 22, the second waterproof layer 31 and the third waterproof layer 53 are all Styrene-butadiene block copolymer (Styrene-butadiene Triblock Copolymer, abbreviated as SBS) modified asphalt waterproof coiled materials, and a 3+4 thick double-layer SBS modified asphalt waterproof coiled material is adopted, namely, a layer of 3mm thick SBS modified asphalt waterproof coiled material is paved first, and a layer of 4mm thick SBS modified asphalt waterproof coiled material is paved on the first layer.
The first waterproof layer 22, the second waterproof layer 31 and the third waterproof layer 53 may be made of a polymer waterproof roll, which is excellent in performance and high in price, and requires no open fire for use.
The embodiment of the invention also provides a construction method for manufacturing the building foundation vibration isolation structure, which comprises the following steps:
building a brick wall in the foundation pit to form a brick bed-jig 21;
a first waterproof layer 22 is paved on the inner side surface of the brick bed-jig 21, and a first vibration reduction layer 23 is paved on the inner side surface of the first waterproof layer 22 to form a first side vibration isolation assembly 2;
building a building foundation side wall 1 from bottom to top along the inner side surface of the first vibration reduction layer 23 until reaching a preset height;
a second waterproof layer 31 is paved on the outer side surface of the side wall between the upper side of the first side vibration isolation assembly 2 and the top end of the building foundation side wall 1, and the upper edge of the first waterproof layer 22 and the lower edge of the second waterproof layer 31 are connected;
a second vibration damping layer 32 is laid on the outer side surface of the second waterproof layer 31 to form a second side vibration isolation assembly 3.
Further, after the first damping layer 23 is laid on the inner side surface of the first waterproof layer 22, before the second waterproof layer 31 is laid on the outer side surface of the side wall between the upper side of the first side vibration isolation assembly 2 and the top end of the building foundation side wall 1, the method further comprises the following steps: the upper edge of the first vibration reduction layer 23 is plastering-treated. By plastering the upper edge of the first vibration reduction layer 23, the problem of damaging the first vibration reduction layer 23 when open fire is used by a hot-melting method when the second waterproof layer 31 is laid can be avoided, and further protection can be achieved.
The following describes a concrete explanation of the construction method of the building foundation vibration isolation structure in this embodiment.
Firstly, a C15 concrete cushion layer 54 with the thickness of 100mm is paved on a raw soil layer 6 of a foundation pit, and then a brick wall is built in the foundation pit by using gray sand bricks with the thickness of 240mm according to the size of the foundation pit and the construction requirement of a building foundation, so that a brick bed-jig 21 is formed. Then, a first gray soil layer 24 is laid on the outer side surface of the brick bed-jig 21, and the first gray soil layer 24 is compacted in layers by adopting a gray soil ratio of 2:8. And then a first waterproof layer 22 is paved on the inner side surface of the brick bed-jig 21, wherein the first waterproof layer 22 is a 3+4 thick double-layer SBS modified asphalt waterproof coiled material. Then, the surface of the concrete cushion layer 54 is subjected to primary pulp light-removing leveling treatment, a third waterproof layer 53 is paved, a 3+4 thick double-layer SBS modified asphalt waterproof coiled material is adopted for the third waterproof layer 53, and a fine stone concrete waterproof protective layer with the thickness of 50mm is paved on the third waterproof layer 53.
Then, a first vibration reduction layer 23 is paved on the inner side surface of the first waterproof layer 22, the first vibration reduction layer 23 adopts fully-closed hole polyurethane vibration isolators, seams between any two adjacent fully-closed hole polyurethane vibration isolators are sealed through waterproof adhesive tapes, and then plastering treatment is carried out on the upper edge of the first vibration reduction layer 23.
And then, paving a third vibration reduction layer 52 on the upper side surface of the fine stone concrete waterproof protective layer, wherein the third vibration reduction layer 52 adopts a full-closed hole 5 polyurethane vibration isolator, and a seam between any two adjacent full-closed hole polyurethane vibration isolators is sealed by a waterproof adhesive tape.
Next, a first protection wall 25 is laid on the inner side surface of the first vibration damping layer 23, and the lower portion of the first protection wall 25 is in contact with the third vibration damping layer 52. Finally, a first side vibration isolation assembly 2 is formed.
Then, a PE film was laid on the upper surface of the third vibration reduction layer 52, and then a protective layer 51 was laid on the upper surface of the PE film, and a fine stone concrete layer having a thickness of 50mm was used as the protective layer 51. Finally, a bottom vibration isolation assembly 5 is formed.
Then, the building foundation mat 4 is fabricated on the upper surface of the protective layer 51, and the building foundation mat 4 may be made of reinforced concrete. And building the building foundation side wall 1 from bottom to top along the inner side surface of the first protection wall 25 until reaching the preset height, wherein the building foundation side wall 1 adopts a reinforced concrete structure. And the building foundation base plate 4 is connected with the building foundation side wall 1.
After the building of the building foundation side wall 1 is completed, firstly polishing, repairing and leveling the outer side surface of the side wall between the top end of the building foundation side wall 1 and the first side vibration isolation assembly 2, and then paving a second waterproof layer 31, wherein the second waterproof layer 31 is also made of a 3+4 thick double-layer SBS modified asphalt waterproof coiled material. Then, the joint of the overlap joint of the upper edge of the first waterproof layer 22 and the lower edge of the second waterproof layer 31 is fully coated with an adhesive, and the joint is firmly adhered by rolling, so that the upper edge of the first waterproof layer 22 and the lower edge of the second waterproof layer 31 are connected together. Next, a second vibration damping layer 32 is laid on the outer side surface of the second waterproof layer 31, the second vibration damping layer 32 is a fully-closed hole polyurethane vibration isolator, and the joint between any two adjacent fully-closed hole polyurethane vibration isolators is sealed by waterproof adhesive tape. Then, an insulating layer 33 was laid on the outer side surface of the second vibration damping layer 32, and a polystyrene board having a thickness of 50mm was used as the insulating layer 33. And then a second protection wall 34 is built on the outer side surface of the heat preservation layer 33, finally a second gray soil layer 35 is paved on the outer side surface of the second protection wall 34, the gray soil proportion of the second gray soil layer 35 is 2:8, and then the layers are tamped in a layering mode. Finally, a second side vibration isolation assembly 3 is formed. Thus, the water resistance and vibration isolation of the side part and the bottom of the building foundation are all manufactured.
According to the building foundation vibration isolation structure and the construction method thereof, vibration isolation and water prevention of the building foundation side wall are achieved through the first side vibration isolation assembly and the second side vibration isolation assembly which are sequentially arranged on the outer side of the building foundation side wall from bottom to top, a brick bed-jig is built in a foundation pit, then a first waterproof layer and a first vibration reduction layer are sequentially paved on the inner side surface of the brick bed-jig, and then the building foundation side wall is built on the inner side of the first side vibration isolation assembly. After the building foundation side wall is built to a preset height, a second waterproof layer and a second vibration reduction layer are sequentially paved on the outer side of a part of the side wall higher than the first side vibration isolation assembly, and the edges of the first waterproof layer and the second waterproof layer are connected, so that the overall waterproof of the whole building foundation side wall is realized. The construction space is optimized, the construction sequence of paving the first waterproof layer and paving the first vibration reduction layer is realized, meanwhile, after the construction of the building foundation side wall is completed, the construction space provided by the brick tire is also utilized for carrying out waterproof and vibration reduction construction on the upper area of the building foundation side wall, the construction sequence of paving the second waterproof layer and paving the second vibration reduction layer is also realized, and the conditions are provided for the hot melting paving mode of the waterproof coiled material. The vibration isolation assembly of the building foundation side wall is divided into an upper section and a lower section by the building foundation vibration isolation structure, the construction is simple, the construction cost is saved, the construction space is optimized, and the waterproof and vibration reduction effects are excellent. Meanwhile, the building foundation vibration isolation structure is also suitable for vibration isolation of equipment adopting a box foundation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The building foundation vibration isolation structure is characterized by comprising a first side vibration isolation assembly and a second side vibration isolation assembly which are sequentially arranged on the outer side of a building foundation side wall from bottom to top; the first side vibration isolation assembly comprises a brick molding bed, a first waterproof layer and a first vibration reduction layer which are sequentially overlapped from outside to inside, the first vibration reduction layer is arranged on the outer side surface of the building foundation side wall, and the first waterproof layer is an asphalt waterproof coiled material or a high polymer modified asphalt waterproof coiled material;
the second side vibration isolation assembly comprises a second waterproof layer and a second vibration reduction layer which are sequentially overlapped from inside to outside, the second waterproof layer is adhered to the outer side surface of the building foundation side wall, and the second waterproof layer is an asphalt waterproof coiled material or a high polymer modified asphalt waterproof coiled material; the upper edge of the first waterproof layer is connected with the lower edge of the second waterproof layer;
the bottom vibration isolation assembly is arranged on the lower side of the building foundation slab, and the building foundation slab is connected with the building foundation side wall; the bottom vibration isolation assembly comprises a third waterproof layer, a third vibration reduction layer and a protective layer which are sequentially overlapped from bottom to top, and the protective layer is arranged on the lower side surface of the building foundation slab; the third vibration reduction layer is connected to the first vibration reduction layer, and the third waterproof layer is connected to the first waterproof layer;
the first vibration reduction layer, the second vibration reduction layer and the third vibration reduction layer are formed by splicing a plurality of vibration reduction pads, joints between any two adjacent vibration reduction pads are sealed through waterproof adhesive tapes, and the first vibration reduction layer and the second vibration reduction layer are all fully-closed polyurethane foaming materials.
2. The building foundation vibration isolation structure of claim 1 wherein a plastic film is further laid between the protective layer and the third vibration reduction layer.
3. The building foundation vibration isolation structure according to claim 1, wherein a concrete cushion layer is further arranged on the lower side face of the third waterproof layer, and the lower portion of the brick bed mould is connected with the concrete cushion layer.
4. The building foundation vibration isolation structure of claim 1 wherein the second side vibration isolation assembly further comprises a thermal insulation layer affixed to an outer side of the second vibration reduction layer.
5. The building foundation vibration isolation structure of claim 1, wherein a protective wall is further provided between the first vibration damping layer and the building foundation side wall.
6. A construction method of manufacturing the building foundation vibration isolation structure according to any one of claims 1 to 5, characterized by comprising the steps of:
building a brick wall in the foundation pit to form a brick bed-jig;
paving a first waterproof layer on the inner side surface of the brick bed-jig, and paving a first vibration reduction layer on the inner side surface of the first waterproof layer to form a first side vibration isolation assembly;
building a building foundation side wall from bottom to top along the inner side surface of the first side vibration isolation assembly until reaching a preset height;
paving a second waterproof layer on the outer side surface of the side wall between the upper side of the first side vibration isolation assembly and the top end of the building foundation side wall, and connecting the upper edge of the first waterproof layer and the lower edge of the second waterproof layer;
and paving a second vibration reduction layer on the outer side surface of the second waterproof layer to form a second lateral vibration isolation assembly.
7. The construction method according to claim 6, wherein after the first damping layer is laid on the inner side surface of the first waterproof layer, before the second waterproof layer is laid on the outer side surface of the side wall between the upper side of the first side vibration isolation assembly and the top end of the building foundation side wall, further comprising the steps of:
and plastering the upper edge of the first vibration reduction layer.
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| CN112681365A (en) * | 2020-12-22 | 2021-04-20 | 陕西建工第七建设集团有限公司 | Vibration isolation construction method for equipment foundation |
| CN113502845B (en) * | 2021-06-22 | 2022-08-02 | 广东省六建集团有限公司 | Vibration isolation laboratory and construction method |
| CN116145737A (en) * | 2022-10-20 | 2023-05-23 | 北京市科学技术研究院城市安全与环境科学研究所 | Construction method of elastic vibration reduction system of building foundation and elastic vibration reduction system thereof |
| CN116145740B (en) * | 2023-04-20 | 2023-07-25 | 北京市科学技术研究院城市安全与环境科学研究所 | Vibration isolation system for foundation elastic pad of building along rail transit line and construction process |
| CN116446465B (en) * | 2023-06-19 | 2023-10-27 | 北京市科学技术研究院城市安全与环境科学研究所 | Building vibration reduction structure suitable for foundation pit-free lining wall and construction method thereof |
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