CN110344438B - Anti-seismic energy dissipation method for gravity type retaining wall - Google Patents
Anti-seismic energy dissipation method for gravity type retaining wall Download PDFInfo
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Abstract
The invention provides an anti-seismic energy dissipation method of a gravity type retaining wall, wherein a closed groove for accommodating an anti-seismic energy dissipation structure is arranged in the top of the gravity type retaining wall, the anti-seismic energy dissipation structure comprises a rigid block body, the left side and the right side of the rigid block body are connected with the left inner side wall and the right inner side wall of the closed groove through springs, and the upper side and the lower side of the rigid block body are connected with the top wall and the bottom wall of the closed groove through yield dampers; when an earthquake occurs, the rigid block body and the concrete main body structure can generate relative displacement, so that the energy dissipation plate of the yielding damper is subjected to shearing force, and the yielding damper is in a state of continuously consuming earthquake energy under the action of the spring, thereby achieving the aim of earthquake resistance and shock absorption. According to the anti-seismic energy dissipation method of the gravity type retaining wall, the concrete main body structure is reasonably arranged in the construction process, so that the anti-seismic energy dissipation structure can be quickly and effectively installed, the rigid block can automatically reset under the action of the elastic potential energy of the high-strength spring group, the rigid block can be repeatedly used, and the durability is good.
Description
Technical Field
The invention relates to the technical field of slope retaining structure earthquake resistance, in particular to an earthquake-resistant energy dissipation method of a gravity retaining wall.
Background
China is one of the most serious countries suffering from earthquake disasters in the world, and in recent years, earthquake disasters frequently cause huge losses to infrastructure and the like of China. Different types of retaining structures along roads and railways in China are damaged in different forms under the action of earthquakes, such as collapse, slippage, overturning, cracking and the like. The damage of the retaining wall caused by the earthquake not only threatens the life safety of people and causes huge economic loss, but also seriously blocks the life line of rescue after the earthquake.
The gravity retaining wall mainly resists the soil body pressure on the back of the retaining wall by the self weight, and the gravity retaining wall with the height of more than 10m is very common in the infrastructure construction of China. The existing research results show that under the action of an earthquake, the gravity type retaining wall has an obvious amplification effect on earthquake acceleration, and the amplification coefficient of the acceleration increases in a nonlinear manner along with the increase of the height of the retaining wall. The amplification of the acceleration of the wall body of the retaining wall can lead to the increase of the inertia force of the retaining wall, thereby reducing the anti-slip stability and the anti-overturning stability of the retaining wall under the action of an earthquake. At present, the antidetonation energy dissipation measure to gravity type retaining wall is special does not almost have, and so under the earthquake effect, the phenomenon that gravity type retaining wall breaks down the inefficacy takes place very easily, consequently needs a scheme to solve this problem among the prior art.
Disclosure of Invention
The invention aims to provide an anti-seismic energy dissipation method for a gravity type retaining wall, which aims to solve the problems in the background technology.
A seismic-resistant energy dissipation method for a gravity type retaining wall comprises the steps that a cuboid-shaped closed groove is arranged in the upper half section of the concrete main body structure of the gravity type retaining wall in the height direction, the length direction of the closed groove is consistent with the length direction of the concrete main body structure of the gravity type retaining wall, and the closed groove is formed by enclosing a front enclosing wall, a rear enclosing wall, a top sealing structure, a base wall, a left enclosing wall and a right enclosing wall which are respectively located in the front direction, the rear direction, the upper direction, the lower direction, the left direction and the right direction of a groove body;
the front and back directions of the closed groove body and the rigid block body are the same as the length direction of the closed groove body and the rigid block body, the left and right directions of the closed groove body and the rigid block body are the same as the thickness direction of the concrete main structure, and the up and down directions of the closed groove body and the rigid block body are the same as the height direction of the concrete main structure.
The left spring group and the right spring group respectively comprise a plurality of springs, one end of each spring is fixedly connected with the side surface of the rigid block, and the other end of each spring is fixedly connected with the inner side wall of the closed groove; the upper yielding damper group and the lower yielding damper group respectively comprise a plurality of yielding dampers, each yielding damper comprises two fixing plates arranged in parallel from top to bottom and an energy consumption plate fixedly connected between the two fixing plates, each yielding damper is fixedly connected with the upper top surface or the lower bottom surface of the rigid block body through one fixing plate, and correspondingly, each yielding damper is fixedly connected with the top wall or the bottom wall of the closed groove through the other fixing plate.
The construction process for building the earthquake-resistant energy-dissipating gravity retaining wall comprises the following steps:
s1) pouring a foundation wall positioned at the lower part of the concrete main body structure, namely pouring the concrete main body structure to the position of the bottom wall of the closed groove, arranging a first embedded part used for connecting a yielding damper fixing plate at the middle position corresponding to the bottom wall of the closed groove, and arranging a second embedded part used for connecting a front enclosing wall, a rear enclosing wall, a left enclosing wall and a right enclosing wall around the first embedded part;
s2) prefabricating the rigid block, wherein when the rigid block is prefabricated, a plurality of clamping grooves for mounting a spring set are formed in the outer side surface of the rigid block so as to be connected with the clamping grooves of the spring set, and an upper yielding damper set and a lower yielding damper set are respectively connected to the outer top surface and the outer bottom surface of the rigid block;
s3) connecting the rigid block body which is finished by the step S2 with a foundation wall, and fixedly connecting the lower fixing plate of each yielding damper of the lower yielding damper group with the first embedded part after the foundation wall is cured in the step S1;
s4) connecting and pouring the lower parts of the front enclosing wall, the rear enclosing wall, the left enclosing wall and the right enclosing wall through the embedded part II, reserving the areas, corresponding to the upper fixing plates of the upper yielding damper group, at the top of the four enclosing walls for not pouring, and facilitating the connection of the upper fixing plates of the upper yielding damper group and the capping structure at the later stage, wherein the innermost sides, close to the rigid block, of the left enclosing wall and the right enclosing wall are also provided with a plurality of clamping grooves for mounting the spring group;
s5) mounting a left spring set and a right spring set;
s6) the middle part of the prefabricated capping structure, which is used for connecting the upper yielding damper set, is reserved, the edge part of the capping structure, which is connected with the tops of the four side walls, is not poured, the lower bottom surface of the middle part is reserved with a third embedded part, which is used for connecting the upper yielding damper set, and the upper fixing plate of each yielding damper of the upper yielding damper set is connected with the third embedded part of the capping structure;
s7) casting the edge portion of the capping structure together with the unfixed portion of the top of the four-sided fence.
The thicknesses of the front enclosing wall, the rear enclosing wall, the left enclosing wall, the right enclosing wall and the capping structure are all larger than 30 cm.
The total height of the anti-seismic energy dissipation structure is 1/4-1/3 of the total height of the concrete main body structure.
The rigid block is a single rigid block with the length similar to the total length of the closed groove, the length of the rigid block is 80% -100% of the total length of the closed groove, or the rigid blocks are a plurality of rigid blocks which are distributed at equal intervals along the length direction of the concrete main body structure. The upper side and the lower side of each rigid block body are respectively provided with a plurality of groups of yielding dampers which are distributed at intervals along the length direction of the rigid block body or the length of the yielding dampers is consistent with the length of the rigid block body, and the yielding dampers are preferably distributed at equal intervals. Each set of yielding dampers comprises two or more than two yielding dampers which are symmetrically arranged in the thickness direction of the concrete main body structure.
Preferably, the spring is a high-strength spring.
The energy dissipation plate can be a metal plate with nonlinear hysteresis characteristics such as a soft steel plate and a lead plate, and the fixing plate can be made of steel, iron or high-strength plastic.
The yield damper comprises a plurality of energy dissipation plates, the plate surfaces of the energy dissipation plates are arranged along the left and right directions of a rigid block body, the energy dissipation plates are of a structure with a narrow middle part and wide upper and lower ends, and the two wide ends of the energy dissipation plates are respectively connected with the upper fixing plate and the lower fixing plate of the yield damper.
Preferably, each yielding damper comprises 3-5 energy dissipation plates arranged at equal intervals.
All the springs of the left spring group and all the springs of the right spring group are distributed at equal intervals, and the left spring group and the right spring group are symmetrically arranged; the yielding dampers on the top surface and the bottom surface of the rigid block body are distributed at equal intervals, and the yielding dampers on the top surface and the bottom surface of the rigid block body are symmetrically arranged.
Preferably, the upper fixing plate and the lower fixing plate of the yielding damper are respectively provided with a mounting hole for a bolt to pass through, the yielding damper is connected with the rigid block body and the top wall and the bottom wall of the closed groove in a bolt connection mode, and the first embedded part is a bolt.
The invention has at least the following beneficial effects:
the invention provides an anti-seismic and energy-dissipation method of a gravity type retaining wall, which is characterized in that a cuboid-shaped closed groove is arranged in the upper half section of the concrete main body structure of the gravity type retaining wall in the height direction, the interior of the closed groove is used for accommodating an anti-seismic and energy-dissipation structure, and the anti-seismic and energy-dissipation structure is arranged at the top of the retaining wall in a built-in mode.
The anti-seismic energy dissipation structure comprises rigid blocks, the left side and the right side of each rigid block are connected with the left inner side wall and the right inner side wall of the closed groove through springs, and the upper side and the lower side of each rigid block are connected with the top wall and the bottom wall of the closed groove through yield dampers; when an earthquake occurs, relative displacement can occur between the rigid block body and the concrete main body structure, when the relative displacement occurs to the rigid block body, the kinetic energy of the rigid block body can be converted into the elastic potential energy of the springs on the two sides, and the elastic potential energy of the springs can be released to the rigid block body in turn to enable the rigid block body to move back and forth, so that the energy dissipation plate of the yielding damper is continuously subjected to shearing force, the yielding damper is in a state of continuously consuming earthquake energy, and the purposes of reducing the vibration of the gravity type retaining wall and resisting earthquake and shock are achieved.
According to the anti-seismic energy dissipation method of the gravity type retaining wall, the foundation wall at the lower part of the concrete main body structure and the upper area for arranging the anti-seismic energy dissipation structure are separately poured through the reasonable construction process and steps for arranging the concrete main body structure, so that the anti-seismic energy dissipation structure can be quickly and effectively installed. According to the invention, the outer side wall of the rigid block body for fixedly connecting the springs and the inner side wall of the closed groove are provided with the plurality of clamping grooves for mounting the spring groups, so that the high-strength springs on the left side and the right side of the rigid block body can be accurately and firmly mounted between the rigid block body and the inner side wall of the closed groove in a clamping groove connection mode, and the left spring group and the right spring group can provide uniform and enough elasticity for the rigid block body. After the earthquake is finished, the rigid block can automatically reset under the action of the elastic potential energy of the high-strength spring set, the whole anti-seismic energy dissipation structure can be repeatedly used, and the durability is good.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a cross-sectional view of an anti-seismic energy dissipation structure in an anti-seismic energy dissipation method of a gravity type retaining wall according to a preferred embodiment of the present invention;
fig. 2 is a perspective view of a yielding damper in the seismic energy dissipation method of a gravity type retaining wall in accordance with a preferred embodiment of the present invention;
fig. 3 is a perspective view of a concrete body structure provided with an anti-seismic energy dissipation structure in the anti-seismic energy dissipation method of a gravity type retaining wall according to a preferred embodiment of the present invention.
In the figure: 1-concrete main body structure, 10-closed groove, 11-foundation wall, 12-left enclosing wall, 13-right enclosing wall, 14-capping structure, 2-rigid block, 31-left spring group, 32-right spring group, 4-yield damper, 41-energy dissipation plate, 42-upper fixing plate, 43-lower fixing plate, 44-mounting hole and 5-soil body.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1 to 3, the method for earthquake resistance and energy dissipation of a gravity retaining wall includes that a cuboid-shaped closed groove 10 is arranged in the top area of a concrete main body structure 1 of the gravity retaining wall in the height direction, the length direction of the closed groove is consistent with the length direction of the concrete main body structure of the gravity retaining wall, and the closed groove is formed by enclosing a front enclosing wall, a rear enclosing wall, a top sealing structure 14, a base wall 11, a left enclosing wall 12 and a right enclosing wall 13 which are respectively located in the front, rear, upper, lower, left and right directions of a groove body;
the front and back directions of the closed groove bodies and the rigid blocks are the same as the length direction thereof (i.e. the direction from the inside of the paper to the outside of the paper in fig. 1), the left and right directions of the closed groove bodies and the rigid blocks are the same as the thickness direction of the concrete main structure (i.e. the left and right directions in fig. 1), and the up and down directions of the closed groove bodies and the rigid blocks are the same as the height direction of the concrete main structure (i.e. the up and down directions in fig. 1).
The closed groove is internally used for accommodating an anti-seismic energy dissipation structure, the anti-seismic energy dissipation structure comprises a cuboid-shaped rigid block body 2, a left spring group 31 and a right spring group 32 which are respectively arranged at the left side and the right side of the rigid block body, and an upper yielding damper group and a lower yielding damper group which are respectively arranged at the upper side and the lower side of the rigid block body, the left spring group and the right spring group both comprise a plurality of springs, one end of each spring is fixedly connected with the side surface of the rigid block body, and the other end of each spring is fixedly connected with the inner side wall of the closed groove; the upper yielding damper group and the lower yielding damper group both comprise a plurality of yielding dampers 4, each yielding damper comprises an energy dissipation plate 41 positioned in the middle, and an upper fixing plate 42 and a lower fixing plate 43 which are vertically connected to the upper end and the lower end of the energy dissipation plate, the surfaces of the energy dissipation plates are arranged in the vertical direction, and the upper fixing plate and the lower fixing plate are arranged in a vertical parallel mode.
In this embodiment, the lower fixing plate of each yielding damper in the upper yielding damper group is fixedly connected with the upper top surface of the rigid block, and the upper fixing plate of each yielding damper in the upper yielding damper group is fixedly connected with the top wall of the closed groove (i.e., the inner side wall of the capping structure). The upper fixing plate of each yielding damper in the lower yielding damper group is fixedly connected with the lower bottom surface of the rigid block body, and the lower fixing plate of each yielding damper in the lower yielding damper group is fixedly connected with the bottom wall (namely the top surface of the foundation wall) of the closed type groove.
In the embodiment, the fixing plate is made of steel, the energy dissipation plate is a soft steel plate, and the thickness and the number of the energy dissipation plates can be determined according to the required shock resistance and the volume and the weight of the rigid blocks.
Referring to fig. 2, in this embodiment, each yielding damper includes 4 energy dissipation plates, the 4 energy dissipation plates are equidistantly disposed and have the same profile and size, the plate surfaces of the energy dissipation plates are disposed along the left-right direction of the rigid block, i.e., the thickness direction of the entire gravity retaining wall, the energy dissipation plates are in a waist-shaped structure with a narrow middle and wide upper and lower ends, and the upper and lower wide ends of the energy dissipation plates are respectively connected to the upper fixing plate and the lower fixing plate of the yielding damper.
The construction process of the gravity type retaining wall with the functions of earthquake resistance and energy dissipation comprises the following steps:
s1) pouring a foundation wall at the lower part of the concrete main body structure, namely pouring the concrete main body structure to the position of the bottom wall of the closed groove, arranging a first embedded part for connecting lower fixing plates of each yielding damper of the lower yielding damper group at the middle position corresponding to the bottom wall of the closed groove, and arranging a second embedded part for connecting a front enclosing wall, a rear enclosing wall, a left enclosing wall and a right enclosing wall around the first embedded part; in this embodiment, the upper and lower fixing plates of each yielding damper are respectively provided with a mounting hole 44 through which a bolt can pass, the mounting holes can be elongated holes to accommodate manufacturing and mounting errors, the yielding damper is connected with the rigid block and the top wall and the bottom wall of the closed groove in a bolt connection manner, and the first embedded part is a bolt.
S2) prefabricating the rigid block, wherein when the rigid block is prefabricated, a plurality of clamping grooves for mounting a spring set are formed in the outer side surface of the rigid block so as to be connected with the clamping grooves of the spring set, and an upper yielding damper set and a lower yielding damper set are respectively connected to the outer top surface and the outer bottom surface of the rigid block;
s3), connecting the rigid block body which is finished by the step S2 with a foundation wall, and fixedly connecting the lower fixing plates of the yielding dampers of the lower yielding damper group with the embedded part I consisting of bolts through nuts after the foundation wall in the step S1 is cured;
s4) connecting and pouring the lower parts of the front enclosing wall, the rear enclosing wall, the left enclosing wall and the right enclosing wall through the embedded part II, reserving the areas of the tops of the four enclosing walls corresponding to the upper fixing plates of the upper yielding damper groups not to pour, and arranging a plurality of clamping grooves for mounting the spring groups on the innermost sides of the left enclosing wall and the right enclosing wall close to the rigid block body. The front enclosing wall, the rear enclosing wall, the left enclosing wall and the right enclosing wall are all or partially provided with exposed steel plates close to the innermost sides of the rigid blocks, namely the inner side walls of the front enclosing wall, the rear enclosing wall, the left enclosing wall and the right enclosing wall are all or partially formed by steel plate surfaces; each draw-in groove of controlling enclosure innermost side can all distribute on the steel sheet, and when the inside wall all set up to the steel sheet (can take the steel sheet welding of concatenation seam to form by the polylith), the steel sheet can regard as the auxiliary form when preceding enclosure, back enclosure, left enclosure and right enclosure are pour, reduces or removes the template setting work of inside wall one side from. The closed grooves and the anti-seismic energy dissipation structures can also be distributed at intervals along the direction of the retaining wall, and when the grooves and the anti-seismic energy dissipation structures are distributed at intervals, all the inner side wall parts of all the grooves are all provided with steel plates. When the springs are connected, the clamping grooves are positioned firstly and connected with one end of the inner side wall of the enclosure wall around, and then the clamping grooves are connected with one end of the outer side wall of the rigid block body of which the steel plate is connected with the springs.
S5) connecting the left spring set with a clamping groove between the outer wall of the left side of the rigid block and the steel plate at the inner side of the left enclosing wall, and connecting the right spring set with a clamping groove between the outer wall of the right side of the rigid block and the steel plate at the inner side of the right enclosing wall; of course, the springs can be connected between the front wall of the front enclosing wall and the front side wall of the rigid block body and between the rear wall of the rear enclosing wall and the rear side wall of the rigid block body through clamping grooves, so that the anti-seismic and energy-dissipation capabilities of the rigid block body in all directions can be improved.
S6) the middle part of the prefabricated capping structure for connecting the upper yielding damper set is reserved, the edge part of the capping structure which is reserved for connecting the top of the four side walls is not poured, the lower bottom surface of the middle part is reserved with a third embedded part for connecting the upper yielding damper set, and the upper fixing plate of each yielding damper of the upper yielding damper set and the third embedded part of the capping structure are connected;
s7) casting the edge portion of the capping structure together with the unfixed portion of the top of the four-sided fence.
In this embodiment, the thicknesses of the front enclosing wall, the rear enclosing wall, the left enclosing wall, the right enclosing wall and the capping structure are all equal to 30 cm.
The concrete retaining wall is characterized in that the rigid block is a single rigid block with the length close to the total length of the concrete main body structure, the length of the rigid block is 90% of the total length of the gravity retaining wall, a plurality of groups of yielding dampers which are distributed at equal intervals along the length direction of the rigid block are arranged on the upper side and the lower side of the rigid block, each group of yielding dampers comprises two yielding dampers which are symmetrically arranged in the thickness direction of the gravity retaining wall, and each group of yielding dampers on the upper side of the rigid block and each group of yielding dampers on the lower side of the rigid block are symmetrical about the transverse center plane of the rigid block.
In this embodiment, the springs of the left spring set and the right spring set are high-strength springs to provide sufficient elastic force for the rigid block. The left spring group and the right spring group respectively comprise a plurality of springs which are distributed in a rectangular array, and the left spring group and the right spring group are symmetrical about the vertical central plane of the rigid block body.
Referring to fig. 1 and 3, the right ends of the springs included in the left spring group are fixedly arranged on the left side surface of the rigid block body, and the left ends of the springs included in the left spring group are fixedly arranged on the inner side wall of the left enclosing wall. The left end of a plurality of spring that right spring group includes is fixed to be set up at the right flank of rigidity block, and the right-hand member of a plurality of spring that right spring group includes is fixed to be set up on the inside wall of right enclosure.
In this embodiment, the energy dissipation plate is a soft steel plate, and the fixing plate may be made of steel, iron, or high-strength plastic.
Referring to fig. 2, each yielding damper comprises 4 energy dissipation plates, the plate surfaces of the energy dissipation plates are arranged along the front-back direction of the rigid block body, the energy dissipation plates are in a waist-shaped structure with a narrow middle part and wide upper and lower ends, and the two wide ends of the energy dissipation plates are respectively connected with the upper fixing plate and the lower fixing plate of the yielding damper.
All the springs of the left spring group and all the springs of the right spring group are distributed at equal intervals, and the left spring group and the right spring group are symmetrically arranged; the yielding dampers on the top surface and the bottom surface of the rigid block body are distributed at equal intervals.
The principle of the earthquake-proof energy dissipation method of the gravity retaining wall is as follows:
when an earthquake occurs, the concrete main body structure and the rigid block body mainly vibrate left and right relatively, and the horizontal force of the earthquake to a structure with a higher height is more obvious, so that the earthquake-proof energy dissipation structure is generally arranged at the top or the upper part of the gravity type retaining wall, the rigid block body and the concrete main body structure generate relative displacement, the relative displacement can enable the energy dissipation plate of the yielding damper to yield due to low yield point, the earthquake energy transferred to the gravity type retaining wall can be effectively dissipated due to the non-linear characteristics of easy yielding and hysteretic curves of the energy dissipation structure, and the earthquake-proof stability of the gravity type retaining wall is improved. When the rigid block body is subjected to relative displacement, the kinetic energy of the rigid block body can be converted into the elastic potential energy of the springs on the two sides, and the elastic potential energy of the springs can be released to the rigid block body in turn to enable the rigid block body to move back and forth, so that the energy dissipation plate of the yielding damper is continuously subjected to shearing force, the yielding damper is in a state of continuously consuming seismic energy, and the purposes of reducing the vibration of the gravity type retaining wall and resisting earthquake and shock are achieved.
After the earthquake is finished, the rigid block body can automatically reset under the action of the elastic potential energy of the high-strength spring group, and the whole anti-seismic energy dissipation structure can repeatedly play a role of shock absorption.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The anti-seismic and energy-dissipation method for the gravity retaining wall is characterized by comprising the steps of arranging a cuboid-shaped closed groove (10) in the upper half section of the concrete main body structure (1) of the gravity retaining wall in the height direction, wherein the length direction of the closed groove is consistent with the length direction of the concrete main body structure of the gravity retaining wall, and the closed groove is formed by enclosing a front enclosing wall, a rear enclosing wall, a top sealing structure (14), a base wall (11), a left enclosing wall (12) and a right enclosing wall (13) which are respectively positioned in the front, rear, upper, lower, left and right directions of a groove body;
the closed groove is internally used for accommodating an anti-seismic energy dissipation structure, the anti-seismic energy dissipation structure comprises a cuboid-shaped rigid block body (2), a left spring group (31) and a right spring group (32) which are arranged on the left side and the right side of the rigid block body, and an upper yielding damper group and a lower yielding damper group which are arranged on the upper side and the lower side of the rigid block body, the left spring group and the right spring group respectively comprise a plurality of springs, one end of each spring is fixedly connected with the side surface of the rigid block body, and the other end of each spring is fixedly connected with the inner side wall of the closed; the upper yielding damper group and the lower yielding damper group respectively comprise a plurality of yielding dampers (4), each yielding damper comprises two fixing plates (42/43) which are arranged in parallel up and down and an energy consumption plate (41) which is fixedly connected between the two fixing plates, each yielding damper is provided with one fixing plate which is fixedly connected with the upper top surface or the lower bottom surface of the rigid block body, and correspondingly, each yielding damper is provided with the other fixing plate which is fixedly connected with the top wall or the bottom wall of the closed groove;
the construction process for building the earthquake-resistant energy-dissipating gravity retaining wall comprises the following steps:
s1) pouring a foundation wall positioned at the lower part of the concrete main body structure, namely pouring the concrete main body structure to the position of the bottom wall of the closed groove, arranging a first embedded part used for connecting a yielding damper fixing plate at the middle position corresponding to the bottom wall of the closed groove, and arranging a second embedded part used for connecting a front enclosing wall, a rear enclosing wall, a left enclosing wall and a right enclosing wall around the first embedded part;
s2) prefabricating the rigid block, wherein when the rigid block is prefabricated, a plurality of clamping grooves for mounting a spring set are formed in the outer side surface of the rigid block so as to be connected with the clamping grooves of the spring set, and an upper yielding damper set and a lower yielding damper set are respectively connected to the outer top surface and the outer bottom surface of the rigid block;
s3) connecting the rigid block body which is finished by the step S2 with a foundation wall, and fixedly connecting the lower fixing plate of each yielding damper of the lower yielding damper group with the first embedded part after the foundation wall is cured in the step S1;
s4) connecting and pouring the lower parts of the front enclosing wall, the rear enclosing wall, the left enclosing wall and the right enclosing wall through the embedded part II, reserving the areas, corresponding to the upper fixing plates of the upper yielding damper group, at the top of the four enclosing walls for not pouring, facilitating the connection of the upper fixing plates of the upper yielding damper group with the capping structure at the later stage, and arranging a plurality of clamping grooves for mounting the spring group on the innermost sides, close to the rigid block, of the left enclosing wall and the right enclosing wall;
s5) mounting a left spring set and a right spring set;
s6) the middle part of the prefabricated capping structure, which is used for connecting the upper yielding damper set, is reserved, the edge part of the capping structure, which is connected with the tops of the four side walls, is not poured, the lower bottom surface of the middle part is reserved with a third embedded part, which is used for connecting the upper yielding damper set, and the upper fixing plate of each yielding damper of the upper yielding damper set is connected with the third embedded part of the capping structure;
s7) casting the edge portion of the capping structure together with the unfixed portion of the top of the four-sided fence.
2. An earthquake-resistant and energy-dissipating method of a gravity retaining wall according to claim 1, wherein the thicknesses of the front wall, the rear wall, the left wall, the right wall and the capping structure are all greater than 30 cm; the total height of the anti-seismic energy dissipation structure is 1/4-1/3 of the total height of the concrete main body structure, and the anti-seismic energy dissipation structure is located in the top area of the height direction of the concrete main body structure.
3. An earthquake-resistant and energy-dissipating method for a gravity type retaining wall according to claim 1, wherein the rigid block is a single rigid block having a length equal to 80% to 100% of the total length of the closed groove, or the rigid block is a plurality of rigid blocks distributed at equal intervals along the length direction of the concrete main structure, each of the rigid blocks is provided at the upper side and the lower side thereof with a plurality of sets of yielding dampers distributed at intervals along the length direction of the rigid block or having a length identical to the length of the rigid block, and each set of yielding dampers comprises two or more than three yielding dampers symmetrically arranged in the thickness direction of the concrete main structure.
4. An earthquake-resistant and energy-dissipating method for a gravity retaining wall according to claim 3, wherein each of the yielding dampers comprises 3 to 5 energy dissipation plates equidistantly arranged along the length direction of the yielding damper.
5. An earthquake-resistant and energy-dissipating method for a gravity retaining wall according to claim 1, wherein the springs are high-strength springs, the energy dissipation plates are soft steel plates or lead plates, and the fixing plates are made of steel, iron or high-strength plastics.
6. An earthquake-resistant and energy-dissipating method for a gravity type retaining wall according to claim 1, wherein the panels of the energy dissipation panels are equidistantly arranged along the length direction of the rigid blocks, the energy dissipation panels are of a structure with a narrow middle part and wide upper and lower ends, and the two wide ends of the energy dissipation panels are respectively connected with the upper and lower fixing plates of the yielding damper.
7. An earthquake-resistant and energy-dissipating method for a gravity retaining wall according to claim 1, wherein the springs of the left spring set and the springs of the right spring set are equally spaced, and the left spring set and the right spring set are symmetrically arranged; the yielding dampers on the top surface and the bottom surface of the rigid block body are distributed at equal intervals, and the yielding dampers on the top surface and the bottom surface of the rigid block body are symmetrically arranged.
8. An earthquake-resistant and energy-dissipating method for a gravity retaining wall according to claim 1, wherein the upper and lower fixing plates of the yielding damper are provided with mounting holes (44) for bolts to pass through, the yielding damper is connected with the rigid block and the top and bottom walls of the closed groove in a bolt connection mode, and one embedded part is a bolt.
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| EP2080837A2 (en) * | 2008-01-16 | 2009-07-22 | Jackon Insulation GmbH | Lost plastic foam formwork for grounding boards for structures |
| CN105808879A (en) * | 2016-03-21 | 2016-07-27 | 潘燕 | Construction method for earthquake-resistant ecological retaining wall |
| CN208328897U (en) * | 2018-05-10 | 2019-01-04 | 湖南省第六工程有限公司 | A kind of carrying reinforcement structure for rock foundation |
| CN109797890A (en) * | 2019-02-22 | 2019-05-24 | 武汉轻工大学 | Intelligence shearing wall system and energy dissipation damper selection method |
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| CN103510539A (en) * | 2012-06-29 | 2014-01-15 | 四川凯铭投资有限公司 | Gravity type anti-seismic retaining wall |
| CN108374431B (en) * | 2018-02-01 | 2020-05-22 | 安徽工程大学 | Novel semi-fabricated anti-seismic energy dissipation retaining wall and construction method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2080837A2 (en) * | 2008-01-16 | 2009-07-22 | Jackon Insulation GmbH | Lost plastic foam formwork for grounding boards for structures |
| CN105808879A (en) * | 2016-03-21 | 2016-07-27 | 潘燕 | Construction method for earthquake-resistant ecological retaining wall |
| CN208328897U (en) * | 2018-05-10 | 2019-01-04 | 湖南省第六工程有限公司 | A kind of carrying reinforcement structure for rock foundation |
| CN109797890A (en) * | 2019-02-22 | 2019-05-24 | 武汉轻工大学 | Intelligence shearing wall system and energy dissipation damper selection method |
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