CN114108880B - Ground wall damping method - Google Patents
Ground wall damping method Download PDFInfo
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- CN114108880B CN114108880B CN202111530694.6A CN202111530694A CN114108880B CN 114108880 B CN114108880 B CN 114108880B CN 202111530694 A CN202111530694 A CN 202111530694A CN 114108880 B CN114108880 B CN 114108880B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000013016 damping Methods 0.000 title claims abstract description 29
- 230000035939 shock Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 119
- 239000010959 steel Substances 0.000 claims description 119
- 230000008093 supporting effect Effects 0.000 claims description 41
- 230000003014 reinforcing effect Effects 0.000 claims description 36
- 238000010276 construction Methods 0.000 claims description 23
- 238000011065 in-situ storage Methods 0.000 claims description 23
- 239000010410 layer Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 claims description 8
- 239000002344 surface layer Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 238000013507 mapping Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 23
- 238000010521 absorption reaction Methods 0.000 abstract description 13
- 238000009412 basement excavation Methods 0.000 description 6
- 239000004567 concrete Substances 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002788 crimping Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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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
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a ground wall damping method which is characterized in that dampers are fixedly buried at two sides below the ground of a wall, the wall is downwards connected to the dampers, and vibration is absorbed by means of damper conversion, so that damping protection is realized. The invention can improve the shock absorption and vibration resistance effects of the ground wall, is easy to implement on the existing wall, can greatly improve the protection effect on the wall and reduce the potential safety hazard.
Description
Technical Field
The invention relates to the technical field of building damping protection, in particular to a damping method for a ground wall.
Background
China belongs to the earthquake-prone country, and along with the enhancement of people's awareness of earthquake prevention and earthquake resistance, the modern buildings can consider the requirements in the aspect of shock absorption and protection during design and construction in the earthquake-prone area. But for some rural old building walls and decorative walls built in part of scenic spots at early time. Such walls are typically built from blocks and the exterior surfaces are painted; in addition, because the building is based on the ground and the height is not high, the building is not generally arranged on an earthquake-proof structure, and the earthquake-proof effect is not considered. The old masonry wall is large in general area, the strength of the old masonry wall is reduced along with the decrease of the strength of the old masonry wall over time, the earthquake resistance is low under the earthquake action, the masonry wall completely depends on the self adhesive force to resist shearing force, the old masonry wall is easy to collapse in a crushing manner, and potential safety hazards are large.
Therefore, along with the improvement of people's anti-seismic consciousness and the improvement of safety requirements, it is necessary to design a damping protection method for the ground wall to improve the safety of the wall.
Disclosure of Invention
Aiming at the defects in the prior art, the invention mainly solves the technical problems that: how to provide a ground wall damping method capable of improving wall damping and earthquake-resistant effects, and the ground wall damping method is easy to implement on the existing wall, and can greatly improve the protection effect on the wall and reduce potential safety hazards.
In order to solve the technical problems, the invention adopts the following technical scheme:
a damping method for a ground wall body is characterized in that dampers are fixedly buried at two sides below the ground of the wall body, the wall body is connected to the dampers downwards, and vibration is absorbed by means of damper conversion, so that damping protection is achieved.
Therefore, the wall body is integrally reinforced and then is connected to the underground damper, and when an earthquake occurs, the left-right swinging force of the wall body can be transmitted to the damper below and absorbed and converted, so that the shock absorption and protection effects are achieved, and the safety of the wall body is greatly improved.
Further, the surface of the wall body is integrally reinforced, and the wall body is integrally reinforced and then connected to the damper.
Therefore, the surface of the wall body is reinforced, so that the wall body is better prevented from being broken and collapsed, and the wall body is particularly suitable for being implemented when the old wall body is repaired and reinforced.
Further, the method is realized by means of a reinforced floor wall structure, which comprises a wall body, wherein the wall body is provided with a wall reinforcing structure, dampers which are symmetrically and fixedly buried below the floors at two sides of the wall are also included, and the lower end of the wall reinforcing structure is connected with the dampers.
Therefore, after the wall body is reinforced by the wall body reinforcing structure, the wall body reinforcing structure is connected to the damper with the lower end fixed and embedded, and vibration can be transmitted to the damper to be absorbed and converted when an earthquake occurs, so that the effects of well damping, protecting and reinforcing are achieved. The reinforced floor wall structure is usually obtained by reinforcing construction treatment of the existing wall.
Further, a supporting ground beam made of reinforced concrete materials is arranged below the wall body, and the damper is poured and fixed into the supporting ground beam.
Thus, the supporting ground beam can better support the wall body, and meanwhile, the damper can be reliably fixed.
Further, the supporting ground beam comprises a cross beam which is arranged along the width direction of the wall body, two ends of the cross beam extend out of two sides along the width direction of the wall body, and the supporting ground beam further comprises a longitudinal beam which is arranged below the wall body along the longitudinal direction of the wall body, and the cross beam and the longitudinal beam are fixedly connected into a whole.
When the wall body is subjected to vibration and transversely swings, the wall body is acted on the supporting ground beam through the wall body reinforcing structure, and the cross beam can well prevent the wall body from tipping and collapsing under the transverse supporting effect. The longitudinal beam and the cross beam are fixedly connected into a whole, so that the stability and the reliability of the whole structure of the supporting ground beam are ensured.
Further, the cross beam is provided with at least two cross beams which are arranged at intervals along the length direction of the wall body.
In this way, rollover can be prevented better.
Further, two longitudinal beams are symmetrically arranged below two sides of the wall body, the inner side part of each longitudinal beam extends into the position right below the wall body, the outer side part of each longitudinal beam is outwards exposed out of the position right below the wall body, the inner sides of the two longitudinal beams are not contacted, and the damper is uniformly arranged on the longitudinal beams at intervals along the length direction.
Therefore, the structure of the longitudinal beam can widen the transverse area of the supporting foundation on the basis of the same consumable, better support the wall body, prevent rollover, and better facilitate the installation of the damper and the connection of the damper and the wall body. Meanwhile, the structure is convenient to construct and implement when the wall is maintained, repaired and reinforced, and the stability of the wall in the construction process is guaranteed.
Further, the longitudinal beam is formed by longitudinally splicing a plurality of prefabricated longitudinal beam sections, the butt joint ends of the longitudinal beam sections are provided with mortise-tenon joint structures to realize butt joint, and the cross beam is obtained in a cast-in-situ mode and is integrally poured with the longitudinal beam.
Thus, the longitudinal beam is obtained by splicing longitudinal beam sections, the damper is convenient to fix in advance, and meanwhile, the influence of long in-situ casting construction period and deep excavation on the wall body is avoided; the number of the longitudinal beam sections can be calculated by measuring the length of a wall body on site, and can be about two meters long, and a damper can be arranged on each longitudinal beam section. The beam adopts a cast-in-situ mode, so that the influence on the wall body is small due to the construction of the beam, the longitudinal beams are conveniently and fixedly connected into a whole by adopting cast-in-situ, a stable and reliable supporting foundation is formed, and meanwhile, the fixed connection between the beam and the wall body is conveniently completed by cast-in-situ.
Further, a plurality of transverse perforations are reserved at the joint position of the longitudinal beam and the cross beam, and the cross beam enters the transverse perforations in a cast-in-situ manner and is fixedly connected into a whole.
In this way, the fixing of the two parts is more convenient.
Further, the upper end of the cross beam is fixedly connected with the wall body into a whole, and backfill soil is arranged between the upper end of the longitudinal beam and the wall body in an isolated manner and filled in the space between the upper end of the longitudinal beam and the wall body.
Therefore, because the strength of the wall body is often lower (the wall body is relatively old and relatively fragile), the structure is adopted, when the earthquake is small and the left-right swing amplitude of the wall body is small, the left-right swing of the wall body can be directly prevented by virtue of the supporting function of the cross beam, and the damage to the surface decoration surface caused by the swing of the wall body is avoided. When the earthquake intensity is increased and the swing of the wall body is increased, the wall body and the cross beam can be disconnected at the moment (if the longitudinal beam and the cross beam are fixedly connected with the wall body, the wall body is difficult to disconnect and is easy to collapse due to overlarge swing), so that the wall body can be separated from the constraint, and the whole body swings left and right; meanwhile, under the action of the wall reinforcing structure, the strength and toughness of the wall are increased, the wall cannot be easily broken when the wall swings left and right after being separated from the constraint of the supporting ground beam, and the wall cannot be easily collapsed due to the constraint of the steel wire rope when the wall swings left and right, and can be better transmitted to the damper below by the steel wire rope, and the damping and energy conversion and dissipation are realized by means of the damper and backfill between the longitudinal beam and the wall body, so that the wall can be better prevented from collapsing and breaking. In the concrete implementation, the position of the upper end of the cross beam corresponding to the wall body can be only provided with a part of area (preferably the position of the middle area) which is upwards fixedly connected with the wall body, the other part of area is filled with backfill or elastic rubber material, and the concrete area can be estimated according to the strength of the wall body, so that the effect can be better realized. Therefore, the damping and anti-crushing effects can be better realized by the rigid connection support of the middle part area during small earthquake, and the dual protection effects of damping and anti-collapse can be realized by toughness (by the buffering of backfill or elastic rubber materials on two sides and the pulling of the damper and the steel wire rope).
Further, the wall reinforcing structure comprises steel wire nets which are integrally paved between two sides of the wall body and the surface layer, and further comprises steel wire ropes which are vertically arranged on the steel wire nets, wherein two ends of each steel wire rope are downwards connected to the wall in a pull-down U-shaped structure, and the steel wire ropes correspond to the damper and are connected with the lower ends of the damper.
Therefore, the surface of the wall body is reinforced in a mode of paving steel wire meshes on two sides of the wall body, and then the wall body is fixed to the damper in a downward pull mode through the steel wire ropes, so that the wall body and the supporting ground beam are not rigidly connected but have stronger toughness, and the wall body has a certain swinging scope. The steel wire rope is used for carrying out pull-connection reinforcement on the two sides of the whole wall body through the steel wire mesh, certain toughness is reserved by the damper at the same time, so that during an earthquake, vibration and swing of the wall body can be well transmitted to the damper supporting the ground beam through the steel wire mesh and the steel wire rope, vibration absorption and conversion are realized by the damper, and the part exceeding the absorption and conversion of the damper is supported and counteracted by the supporting ground beam. Therefore, the vibration reduction is realized, the wall body can be better prevented from being crushed or collapsed due to insufficient strength of the self material, the vibration resistance toughness of the wall body is improved, and the vibration reduction protection effect on the wall body is better improved. The scheme is particularly suitable for protection, upgrading and reconstruction implementation on old and old walls.
Further the lower end of the steel wire rope is connected to the damper through a knuckle bearing.
Therefore, the connection between the steel wire rope and the damper is realized by means of the joint bearing, so that when the wall body vibrates and shakes, the lower end of the steel wire rope can have larger swing amplitude, the integral anti-seismic toughness of the wall body is better improved, and the phenomenon that the wall body is hard pulled and collapsed by the steel wire rope due to insufficient strength of the wall body in the earthquake process is avoided. The protection and shock absorption effects on the wall body are improved.
Further, steel pipe grooves are vertically formed in the two sides of the wall body corresponding to the positions of the dampers, steel pipes are arranged in the steel pipe grooves, steel wire nets are located at the positions of the steel pipe grooves, provided with concave molded surfaces and pressed in the steel pipe grooves by the steel pipes in a pressing mode, and steel wire ropes penetrate through the steel pipes.
Like this, the setting of steel pipe makes wire rope on the one hand can better crimping at the wire net surface, improves the reinforcing effect of wire net to the wall body. More importantly, the steel pipe enables the steel wire rope to slide up and down in the steel pipe better while keeping the pressure on the steel wire rope and the side surface of the wall body in the process of left and right swinging of the wall body during an earthquake, so that more swingable space is released for the wall body, better toughness is generated, and the wall body is prevented from being collapsed due to insufficient strength.
Further, a supporting structure is arranged between the position, where the upper end of the steel wire rope passes over the top of the wall body, and the wall body, the supporting structure comprises a supporting plate arranged on the upper surface of the wall body along the width direction, a rope groove with an arc-shaped section is further formed in the upper surface of the supporting plate, and the steel wire rope is pulled and connected in the rope groove.
Therefore, the steel wire rope can have a certain sliding margin for convenience, so that more swingable margin can be conveniently released to the wall body during an earthquake, and better toughness is generated.
Further, two wing plates extending outwards in the width direction of the support plate are also arranged between the lower parts of the two ends of the support plate and the top of the wall body in a cushioning manner.
Therefore, the top positions of the two sides of the wall body can be better protected, and collapse caused by stress concentration of the steel wire ropes collected at the positions can be avoided.
Further, the outer surface of the steel wire mesh is provided with a decorative wall layer in a sticking way. The wall reinforcing structure is attractive and attractive, and the wall reinforcing structure can be combined with a wall into a whole.
Further, the reinforced floor wall structure is obtained on the basis of the existing floor wall by means of the following reinforcement construction method, and the reinforcement construction method comprises the following steps: a, mapping a ground wall to be reinforced to obtain size data, prefabricating two longitudinal beams in a factory according to the length of the ground wall to be reinforced, wherein the width of each longitudinal beam is smaller than that of the wall, and prefabricating and fixing a plurality of dampers at the middle position of the upper surface of each longitudinal beam according to a fixed interval (usually about two meters, and correspondingly increasing and decreasing according to the strength of the ground wall to be reinforced); a section of beam connecting section is arranged in the longitudinal beam at least near the two ends, and a plurality of transverse perforations are arranged on the beam connecting section; the longitudinal beam is formed by splicing a plurality of prefabricated longitudinal beam sections, and the end part of each longitudinal beam section is provided with a mortise-tenon matching structure to realize butt joint; b, excavating longitudinal beam mounting grooves on site, wherein the longitudinal beam mounting grooves are arranged at the lower end positions of two sides of the ground wall to be reinforced, one part of the longitudinal beam mounting grooves penetrates into the right lower part of the ground wall to be reinforced, and the other part of the longitudinal beam mounting grooves is positioned at the outer side of the ground wall; the longitudinal beam installation groove is excavated section by section according to the length of the longitudinal beam section, a section of longitudinal beam section is filled after each section is excavated, the position between the upper surface of the longitudinal beam section and the ground wall is filled, and a space is reserved above the damper until all longitudinal beams are installed; c, excavating a beam mounting groove at the beam connecting section of the longitudinal beam, wherein the beam mounting groove penetrates through the lower part of the ground wall, and after the beam is excavated, the beam is cast in situ, and connecting ribs penetrate through transverse perforations on the longitudinal beam in the beam cast-in-situ process, so that the beam and the longitudinal beam are fixedly connected into a whole; at least part of the cross beam is fixedly connected with the lower end of the ground wall above the cross beam in a cast-in-situ mode; d, when the surface of the ground wall body is provided with a decorative layer, removing the decorative layers on the two side surfaces of the ground wall body to expose the wall body, and chiseling a vertical steel pipe groove at the positions of the two side surfaces of the wall body, which are correspondingly provided with dampers, wherein the upper surface of the wall body, which is opposite to the upper end of the steel pipe groove, is provided with a support plate, and wing plates are padded below the two ends of the support plate; e, paving steel wire meshes on the surfaces of two sides of the wall body and fixing the steel wire meshes by rivets, and pressing the positions of the steel wire meshes, which are positioned in the steel pipe grooves, into the steel pipe grooves; f, overlapping the steel wire rope on the supporting plate, putting the steel pipes on the two ends, and then tensioning and fixing the lower ends on the damper, so that the steel pipes are pressed into the steel pipe grooves and the steel wire meshes are pressed; g repainting or laying the surface layer and/or decorative layer.
Therefore, the reinforced floor wall can be obtained by the construction method, the reinforcement of the existing wall is realized, and the shock absorption can be realized. When earthquake acts on, the wall body rocks, wire rope is continuous, wrap up whole wall body through steel pipe and wire net, prevent that the building block from scattering, wire rope pulls whole wall body through burying the attenuator energy dissipation shock attenuation in the girder, prevent that the wall body from wholly collapsing, when rocking, wire rope passes the place at wall body top and bearing structure can take place the relative slip, wire rope penetrates the position of girder can take place the slope simultaneously, set up the arc wall on consequently bearing structure, set up joint bearing in girder and wire rope's junction, make wire rope can free relative wall body motion, better pull the wall body. Meanwhile, the construction method has the advantages of convenience, rapidness, high efficiency, reliability and the like. The fixed connection of the longitudinal beam and the cross beam can be better completed, the fixed connection of the cross beam and the wall body is completed, and the construction formation of the wall body reinforcing structure is completed, so that the wall body reinforcing structure has the dual protection effects of being capable of being damped and prevented from being broken by rigidity in small earthquake and being damped and prevented from collapsing by toughness in large earthquake; the method is extremely suitable for reinforcing, protecting and anti-seismic treatment of the existing old wall. In addition, the method is suitable for old walls with certain strength, and the strength of the old walls needs to bear the construction of excavation of longitudinal beam grooves; for the wall body with too low strength and cannot bear the excavation of the longitudinal beams, the longitudinal beams can be omitted, the number of the transverse beams is increased, and the damper is arranged on the transverse beams.
In conclusion, the invention can improve the shock absorption and vibration resistance effects of the ground wall, is easy to implement on the existing wall, can greatly improve the protection effect on the wall, and reduces the potential safety hazard.
Drawings
FIG. 1 is a schematic view of a reinforced floor wall structure according to an embodiment of the invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic view of the structure of the separately supported ground beam of fig. 2.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The specific embodiment is as follows:
a damping method for the wall body of ground features that the dampers are buried under the wall body, and the wall body is connected to the dampers downward for absorbing vibration.
Therefore, the wall body is integrally reinforced and then is connected to the underground damper, and when an earthquake occurs, the left-right swinging force of the wall body can be transmitted to the damper below and absorbed and converted, so that the shock absorption and protection effects are achieved, and the safety of the wall body is greatly improved.
The method comprises the steps of integrally reinforcing the surface of a wall body, and then connecting the wall body to a damper after integrally reinforcing the wall body.
Therefore, the surface of the wall body is reinforced, so that the wall body is better prevented from being broken and collapsed, and the wall body is particularly suitable for being implemented when the old wall body is repaired and reinforced.
Specifically, the method is realized by means of a reinforced floor wall structure shown in fig. 1-3, the reinforced floor wall structure comprises a wall body 1, a wall reinforcing structure is arranged on the wall body 1, dampers 2 buried under the floors on two sides of the wall body are symmetrically fixed, and the lower end of the wall reinforcing structure is connected with the dampers 2.
Therefore, after the wall body is reinforced by the wall body reinforcing structure, the wall body reinforcing structure is connected to the damper with the lower end fixed and embedded, and vibration can be transmitted to the damper to be absorbed and converted when an earthquake occurs, so that the effects of well damping, protecting and reinforcing are achieved. The reinforced floor wall structure is usually obtained by reinforcing construction treatment of the existing wall.
Wherein, the support floor beam of reinforced concrete material is arranged below the wall body 1, and the damper is poured and fixed in the support floor beam.
Thus, the supporting ground beam can better support the wall body, and meanwhile, the damper can be reliably fixed.
The supporting ground beam comprises a cross beam 3 which is arranged along the width direction of the wall body, two ends of the cross beam extend out of two sides along the width direction of the wall body, a longitudinal beam 4 which is arranged below the wall body along the longitudinal direction of the wall body, and the cross beam 3 and the longitudinal beam 4 are fixedly connected into a whole.
When the wall body is subjected to vibration and transversely swings, the wall body is acted on the supporting ground beam through the wall body reinforcing structure, and the cross beam can well prevent the wall body from tipping and collapsing under the transverse supporting effect. The longitudinal beam and the cross beam are fixedly connected into a whole, so that the stability and the reliability of the whole structure of the supporting ground beam are ensured.
Wherein, the cross beam 3 is provided with at least two cross beams which are arranged at intervals along the length direction of the wall body.
In this way, rollover can be prevented better.
Wherein, longeron 4 have two and set up in wall body both sides below symmetrically, and the inboard part of every longeron extends into wall body under, and outside part outwards exposes under the wall body, and the inboard is contactless between two longerons, and the attenuator is installed on the longeron along length direction even interval.
Therefore, the structure of the longitudinal beam can widen the transverse area of the supporting foundation on the basis of the same consumable, better support the wall body, prevent rollover, and better facilitate the installation of the damper and the connection of the damper and the wall body. Meanwhile, the structure is convenient to construct and implement when the wall is maintained, repaired and reinforced, and the stability of the wall in the construction process is guaranteed.
The longitudinal beam 4 is formed by longitudinally splicing a plurality of prefabricated longitudinal beam sections, a mortise-tenon matching structure 5 is arranged at the butt joint ends of the longitudinal beam sections to realize butt joint, and the cross beam 3 is obtained in a cast-in-situ mode and is integrally poured with the longitudinal beam.
Thus, the longitudinal beam is obtained by splicing longitudinal beam sections, the damper is convenient to fix in advance, and meanwhile, the influence of long in-situ casting construction period and deep excavation on the wall body is avoided; the number of the longitudinal beam sections can be calculated by measuring the length of a wall body on site, and can be about two meters long, and a damper can be arranged on each longitudinal beam section. The beam adopts a cast-in-situ mode, so that the influence on the wall body is small due to the construction of the beam, the longitudinal beams are conveniently and fixedly connected into a whole by adopting cast-in-situ, a stable and reliable supporting foundation is formed, and meanwhile, the fixed connection between the beam and the wall body is conveniently completed by cast-in-situ.
Wherein, a plurality of transverse perforations (not shown in the figure) are reserved at the connection position of the longitudinal beam 4 and the transverse beam 3, and the transverse beam enters the transverse perforations in a cast-in-situ manner and is fixedly connected into a whole.
In this way, the fixing of the two parts is more convenient.
Wherein, crossbeam 3 upper end and wall body 1 fixed connection are as an organic whole, keep apart between longeron 4 upper end and the wall body and set up and fill with backfill 6.
Therefore, because the strength of the wall body is often lower (the wall body is relatively old and relatively fragile), the structure is adopted, when the earthquake is small and the left-right swing amplitude of the wall body is small, the left-right swing of the wall body can be directly prevented by virtue of the supporting function of the cross beam, and the damage to the surface decoration surface caused by the swing of the wall body is avoided. When the earthquake intensity is increased and the swing of the wall body is increased, the wall body and the cross beam can be disconnected at the moment (if the longitudinal beam and the cross beam are fixedly connected with the wall body, the wall body is difficult to disconnect and is easy to collapse due to overlarge swing), so that the wall body can be separated from the constraint, and the whole body swings left and right; meanwhile, under the action of the wall reinforcing structure, the strength and toughness of the wall are increased, the wall cannot be easily broken when the wall swings left and right after being separated from the constraint of the supporting ground beam, and the wall cannot be easily collapsed due to the constraint of the steel wire rope when the wall swings left and right, and can be better transmitted to the damper below by the steel wire rope, and the damping and energy conversion and dissipation are realized by means of the damper and backfill between the longitudinal beam and the wall body, so that the wall can be better prevented from collapsing and breaking. In the concrete implementation, the position of the upper end of the cross beam corresponding to the wall body can be only provided with a part of area (preferably the position of the middle area) which is upwards fixedly connected with the wall body, the other part of area is filled with backfill or elastic rubber material, and the concrete area can be estimated according to the strength of the wall body, so that the effect can be better realized. Therefore, the damping and anti-crushing effects can be better realized by the rigid connection support of the middle part area during small earthquake, and the dual protection effects of damping and anti-collapse can be realized by toughness (by the buffering of backfill or elastic rubber materials on two sides and the pulling of the damper and the steel wire rope).
Wherein, wall body reinforced structure, including whole lay arrange the wire net 7 between wall body both sides and surface layer, still include the wire rope 8 of vertical setting on the wire net, wire rope 8 both ends draw to connect downwards and be the structure of falling the U-shaped on the wall body, wire rope 8 corresponds attenuator 2 setting and lower extreme and attenuator 2 connection.
Therefore, the surface of the wall body is reinforced in a mode of paving steel wire meshes on two sides of the wall body, and then the wall body is fixed to the damper in a downward pull mode through the steel wire ropes, so that the wall body and the supporting ground beam are not rigidly connected but have stronger toughness, and the wall body has a certain swinging scope. The steel wire rope is used for carrying out pull-connection reinforcement on the two sides of the whole wall body through the steel wire mesh, certain toughness is reserved by the damper at the same time, so that during an earthquake, vibration and swing of the wall body can be well transmitted to the damper supporting the ground beam through the steel wire mesh and the steel wire rope, vibration absorption and conversion are realized by the damper, and the part exceeding the absorption and conversion of the damper is supported and counteracted by the supporting ground beam. Therefore, the vibration reduction is realized, the wall body can be better prevented from being crushed or collapsed due to insufficient strength of the self material, the vibration resistance toughness of the wall body is improved, and the vibration reduction protection effect on the wall body is better improved. The scheme is particularly suitable for protection, upgrading and reconstruction implementation on old and old walls.
Wherein the lower end of the wire rope 8 is connected to the damper 2 through a knuckle bearing 9.
Therefore, the connection between the steel wire rope and the damper is realized by means of the joint bearing, so that when the wall body vibrates and shakes, the lower end of the steel wire rope can have larger swing amplitude, the integral anti-seismic toughness of the wall body is better improved, and the phenomenon that the wall body is hard pulled and collapsed by the steel wire rope due to insufficient strength of the wall body in the earthquake process is avoided. The protection and shock absorption effects on the wall body are improved.
Wherein, the steel pipe groove has been seted up along vertical to the attenuator position in the both sides of wall body, is provided with steel pipe 10 in the steel pipe groove, and wire net 7 is located steel pipe groove position and has the indent profile and by steel pipe 10 crimping in the steel pipe groove, and wire rope 8 runs through the setting in the steel pipe.
Like this, the setting of steel pipe makes wire rope on the one hand can better crimping at the wire net surface, improves the reinforcing effect of wire net to the wall body. More importantly, the steel pipe enables the steel wire rope to slide up and down in the steel pipe better while keeping the pressure on the steel wire rope and the side surface of the wall body in the process of left and right swinging of the wall body during an earthquake, so that more swingable space is released for the wall body, better toughness is generated, and the wall body is prevented from being collapsed due to insufficient strength.
Wherein, the position that wire rope 8 upper end passed through wall body 1 top is provided with bearing structure between the wall body, and bearing structure includes the backup pad 11 that sets up at wall body upper surface along width direction, and backup pad 11 upper surface still is provided with the cross-section and is curved rope groove, and wire rope 8 draw and connect in the rope groove.
Therefore, the steel wire rope can have a certain sliding margin for convenience, so that more swingable margin can be conveniently released to the wall body during an earthquake, and better toughness is generated.
Wherein, two wing plates 12 extending outwards in the width direction of the support plate are also arranged between the lower parts of the two ends of the support plate and the top of the wall body.
Therefore, the top positions of the two sides of the wall body can be better protected, and collapse caused by stress concentration of the steel wire ropes collected at the positions can be avoided.
Wherein, the outer surface of the steel wire mesh 7 is provided with a decorative wall layer (not shown in the figure) in a pasting way. The wall reinforcing structure is attractive and attractive, and the wall reinforcing structure can be combined with a wall into a whole.
The reinforced floor wall structure is obtained on the basis of the existing floor wall by the following reinforcement construction method, and the reinforcement construction method comprises the following steps: a, mapping a ground wall to be reinforced to obtain size data, prefabricating two longitudinal beams in a factory according to the length of the ground wall to be reinforced, wherein the width of each longitudinal beam is smaller than that of the wall, and prefabricating and fixing a plurality of dampers at the middle position of the upper surface of each longitudinal beam according to a fixed interval (usually about two meters, and correspondingly increasing and decreasing according to the strength of the ground wall to be reinforced); a section of beam connecting section is arranged in the longitudinal beam at least near the two ends, and a plurality of transverse perforations are arranged on the beam connecting section; the longitudinal beam is formed by splicing a plurality of prefabricated longitudinal beam sections, and the end part of each longitudinal beam section is provided with a mortise-tenon matching structure to realize butt joint; b, excavating longitudinal beam mounting grooves on site, wherein the longitudinal beam mounting grooves are arranged at the lower end positions of two sides of the ground wall to be reinforced, one part of the longitudinal beam mounting grooves penetrates into the right lower part of the ground wall to be reinforced, and the other part of the longitudinal beam mounting grooves is positioned at the outer side of the ground wall; the longitudinal beam installation groove is excavated section by section according to the length of the longitudinal beam section, a section of longitudinal beam section is filled after each section is excavated, the position between the upper surface of the longitudinal beam section and the ground wall is filled, and a space is reserved above the damper until all longitudinal beams are installed; c, excavating a beam mounting groove at the beam connecting section of the longitudinal beam, wherein the beam mounting groove penetrates through the lower part of the ground wall, and after the beam is excavated, the beam is cast in situ, and connecting ribs penetrate through transverse perforations on the longitudinal beam in the beam cast-in-situ process, so that the beam and the longitudinal beam are fixedly connected into a whole; at least part of the cross beam is fixedly connected with the lower end of the ground wall above the cross beam in a cast-in-situ mode; d, when the surface of the ground wall body is provided with a decorative layer, removing the decorative layers on the two side surfaces of the ground wall body to expose the wall body, and chiseling a vertical steel pipe groove at the positions of the two side surfaces of the wall body, which are correspondingly provided with dampers, wherein the upper surface of the wall body, which is opposite to the upper end of the steel pipe groove, is provided with a support plate, and wing plates are padded below the two ends of the support plate; e, paving steel wire meshes on the surfaces of two sides of the wall body and fixing the steel wire meshes by rivets, and pressing the positions of the steel wire meshes, which are positioned in the steel pipe grooves, into the steel pipe grooves; f, overlapping the steel wire rope on the supporting plate, putting the steel pipes on the two ends, and then tensioning and fixing the lower ends on the damper, so that the steel pipes are pressed into the steel pipe grooves and the steel wire meshes are pressed; g repainting or laying the surface layer and/or decorative layer.
Therefore, the reinforced floor wall can be obtained by the construction method, the reinforcement of the existing wall is realized, and the shock absorption can be realized. When earthquake acts on, the wall body rocks, wire rope is continuous, wrap up whole wall body through steel pipe and wire net, prevent that the building block from scattering, wire rope pulls whole wall body through burying the attenuator energy dissipation shock attenuation in the girder, prevent that the wall body from wholly collapsing, when rocking, wire rope passes the place at wall body top and bearing structure can take place the relative slip, wire rope penetrates the position of girder can take place the slope simultaneously, set up the arc wall on consequently bearing structure, set up joint bearing in girder and wire rope's junction, make wire rope can free relative wall body motion, better pull the wall body. Meanwhile, the construction method has the advantages of convenience, rapidness, high efficiency, reliability and the like. The fixed connection of the longitudinal beam and the cross beam can be better completed, the fixed connection of the cross beam and the wall body is completed, and the construction formation of the wall body reinforcing structure is completed, so that the wall body reinforcing structure has the dual protection effects of being capable of being damped and prevented from being broken by rigidity in small earthquake and being damped and prevented from collapsing by toughness in large earthquake; the method is extremely suitable for reinforcing, protecting and anti-seismic treatment of the existing old wall. In addition, the method is suitable for old walls with certain strength, and the strength of the old walls needs to bear the construction of excavation of longitudinal beam grooves; for the wall body with too low strength and cannot bear the excavation of the longitudinal beams, the longitudinal beams can be omitted, the number of the transverse beams is increased, and the damper is arranged on the transverse beams.
Claims (7)
1. A damping method for a ground wall body is characterized in that dampers are fixedly buried at two sides below the ground of the wall body, the wall body is connected to the dampers downwards, and vibration is absorbed by means of damper conversion, so that damping protection is realized;
the method comprises the steps of integrally reinforcing the surface of a wall body, and then connecting the wall body to a damper after integrally reinforcing the wall body;
the method is realized by means of a reinforced floor wall structure, which comprises a wall body, wherein the wall body is provided with a wall reinforcing structure, dampers which are symmetrically and fixedly buried below the floors at two sides of the wall are also included, and the lower ends of the wall reinforcing structure are connected with the dampers;
the reinforced floor wall structure is obtained on the basis of the existing floor wall by the following reinforcement construction method, and the reinforcement construction method comprises the following steps:
a, mapping a ground wall to be reinforced to obtain size data of the ground wall, prefabricating two longitudinal beams in a factory according to the length of the ground wall to be reinforced, wherein the width of each longitudinal beam is smaller than that of the wall, and prefabricating and fixing a plurality of dampers at the middle position of the upper surface of each longitudinal beam according to fixed intervals; a section of beam connecting section is arranged in the longitudinal beam at least near the two ends, and a plurality of transverse perforations are arranged on the beam connecting section; the longitudinal beam is formed by splicing a plurality of prefabricated longitudinal beam sections, and the end part of each longitudinal beam section is provided with a mortise-tenon matching structure to realize butt joint;
b, excavating longitudinal beam mounting grooves on site, wherein the longitudinal beam mounting grooves are arranged at the lower end positions of two sides of the ground wall to be reinforced, one part of the longitudinal beam mounting grooves penetrates into the right lower part of the ground wall to be reinforced, and the other part of the longitudinal beam mounting grooves is positioned at the outer side of the ground wall; the longitudinal beam installation groove is excavated section by section according to the length of the longitudinal beam section, a section of longitudinal beam section is filled after each section is excavated, the position between the upper surface of the longitudinal beam section and the ground wall is filled, and a space is reserved above the damper until all longitudinal beams are installed;
c, excavating a beam mounting groove at the beam connecting section of the longitudinal beam, wherein the beam mounting groove penetrates through the lower part of the ground wall, and after the beam is excavated, the beam is cast in situ, and connecting ribs penetrate through transverse perforations on the longitudinal beam in the beam cast-in-situ process, so that the beam and the longitudinal beam are fixedly connected into a whole; at least part of the cross beam is fixedly connected with the lower end of the ground wall above the cross beam in a cast-in-situ mode;
d, when the surface of the ground wall body is provided with a decorative layer, removing the decorative layers on the two side surfaces of the ground wall body to expose the wall body, and chiseling a vertical steel pipe groove at the positions of the two side surfaces of the wall body, which are correspondingly provided with dampers, wherein the upper surface of the wall body, which is opposite to the upper end of the steel pipe groove, is provided with a support plate, and wing plates are padded below the two ends of the support plate;
e, paving steel wire meshes on the surfaces of two sides of the wall body and fixing the steel wire meshes by rivets, and pressing the positions of the steel wire meshes, which are positioned in the steel pipe grooves, into the steel pipe grooves;
f, overlapping the steel wire rope on the supporting plate, putting the steel pipes on the two ends, and then tensioning and fixing the lower ends on the damper, so that the steel pipes are pressed into the steel pipe grooves and the steel wire meshes are pressed;
g repainting or laying the surface layer and/or decorative layer.
2. The method of damping a floor wall according to claim 1, wherein a supporting floor beam of reinforced concrete material is provided below the wall body, and the damper is cast and fixed into the supporting floor beam;
the supporting ground beam comprises a cross beam which is arranged along the width direction of the wall body, two ends of the cross beam extend out of two sides along the width direction of the wall body, and a longitudinal beam which is arranged below the wall body along the longitudinal direction of the wall body, wherein the cross beam and the longitudinal beam are fixedly connected into a whole.
3. The method of damping a floor wall according to claim 2, wherein the cross member has at least two cross members spaced apart along the length of the wall;
the two longitudinal beams are symmetrically arranged below two sides of the wall body, the inner side part of each longitudinal beam extends into the position right below the wall body, the outer side part of each longitudinal beam is outwards exposed out of the position right below the wall body, the inner sides of the two longitudinal beams are not contacted, and the damper is uniformly arranged on the longitudinal beams at intervals along the length direction.
4. The method for damping the floor wall according to claim 2, wherein the longitudinal beams are obtained by longitudinally splicing a plurality of prefabricated longitudinal beam segments, the butt ends of the longitudinal beam segments are provided with mortise-tenon matching structures to realize butt joint, and the cross beams are obtained by cast-in-situ and are cast into a whole with the longitudinal beams;
a plurality of transverse perforations are reserved at the joint position of the longitudinal beam and the transverse beam, and the transverse beam enters the transverse perforations in a cast-in-situ manner and is fixedly connected into a whole.
5. The method of damping a floor wall according to claim 2, wherein the upper ends of the cross members are fixedly connected to the wall body as a unit, and the upper ends of the longitudinal members are spaced apart from the wall body and filled with backfill.
6. The method for damping the shock of a floor wall according to claim 1, wherein the wall reinforcing structure comprises steel wire nets integrally paved between two sides of a wall body and a surface layer, and further comprises steel wire ropes vertically arranged on the steel wire nets, wherein two ends of each steel wire rope are downwards pulled on the wall body to form an inverted U-shaped structure, the steel wire ropes are arranged corresponding to the dampers, and the lower ends of the steel wire ropes are connected with the dampers;
the lower end of the steel wire rope is connected to the damper through a joint bearing;
the steel pipe groove is vertically formed in the two sides of the wall body corresponding to the positions of the dampers, steel pipes are arranged in the steel pipe groove, the steel wire mesh is located at the position of the steel pipe groove, provided with a concave molded surface and is pressed in the steel pipe groove by the steel pipes, and the steel wire rope penetrates through the steel pipes.
7. The method of damping a floor wall according to claim 6, wherein a supporting structure is provided between the position where the upper end of the wire rope passes over the top of the wall body and the wall body, the supporting structure comprising a supporting plate provided on the upper surface of the wall body in the width direction, the upper surface of the supporting plate further being provided with a rope groove having an arc-shaped cross section, the wire rope being pulled into the rope groove;
two wing plates extending outwards in the width direction of the support plate are also arranged between the lower parts of the two ends of the support plate and the top of the wall body in a cushioning manner;
the outer surface of the steel wire mesh is provided with a decorative wall layer in a sticking way.
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| CN202310925292.9A CN116876704A (en) | 2021-12-15 | 2021-12-15 | Reinforced floor wall structure |
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| KR102104604B1 (en) * | 2017-12-08 | 2020-04-24 | 주식회사 유원구조진단건축사사무소 | Environmental Friendly Structure Using Prestress |
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