A seismic device for wooden building pillars and implementation method

Abstract

The present invention belongs to an anti-seismic device for wooden building pillars and an implementation method, including a steel base, a column support steel base plate, a connecting steel sleeve, an annular pressure plate, a pressure dividing plate, bolts and a butterfly spring, a circular groove is provided in the middle of the upper end surface of the steel base, the column support steel base plate is in a truncated cone shape, the middle of the upper end surface of the column support steel base plate is fixed as a whole with the lower end of the connecting steel sleeve, the connecting steel sleeve is fixed on the outer peripheral wall of the pillar with a clamping groove by screws passing through screw holes, the lower end surface of the column support steel base plate is supported in the circular groove of the steel base, the lower end surface of the butterfly spring is supported on the upper end surface edge of the column support steel base plate outside the connecting steel sleeve, the upper end surface of the butterfly spring is supported on the lower end surface of the pressure dividing plate, and the annular pressure plate is fixed to the peripheral part of the upper end surface of the steel base by a number of bolts at intervals. The present invention has the function of reducing the horizontal and vertical destructive forces of earthquakes, and also has the function of resisting compression and vertical tension to prevent the wooden building structure from overturning and collapsing.

Description

Technical Field

[0001] The invention relates to an anti-seismic device for wooden building pillars and an implementation method. Background Art

[0002] Ancient wooden buildings can be divided into the base layer, column frame layer, paving layer and covering layer from bottom to top. The column frame layer plays a connecting role and is composed of several pillars distributed at a distance. The current wooden buildings have not changed except that the base layer uses reinforced concrete to replace bricks and stone pillars. In ancient times, for earthquake resistance, the foot of each pillar of the wooden building was floated on the stone pillar foundation in the foundation, so that the wooden building structure was naturally disconnected from the foundation. If the horizontal seismic shear force of the structure is lower than the sum of the friction forces at the bottom of each pillar in a general small earthquake, the wooden building structure will not produce excessive displacement and can still remain stable; if the earthquake is large, the horizontal seismic shear force of the structure is greater than the maximum friction between the foot of each pillar and the stone pillar foundation, the wooden building structure will slide, thereby reducing the output of earthquake energy; this ancient earthquake resistance technology has evolved into a modern sliding isolation structure.

[0003] Earthquakes transmit destructive energy in the form of seismic waves. Currently, there are many sliding isolation structures in use, but most of them slide in the horizontal direction and lack protection against vertical deformation damage caused by seismic waves, that is, they cannot resist the damage caused by seismic waves and other vertical tensile forces.

[0004] Chinese patent CN113530335A discloses a three-dimensional seismic isolation support, including an upper connecting plate, a lower connecting plate, a steel plate slide, a laminated rubber, a link node, a hinge bolt, a universal joint, and a dog-bone SMA rod. The upper steel plate is connected to the upper structure of the building by bolts, and the lower steel plate is connected to the foundation of the building; the laminated rubber core is placed in the middle of the upper and lower steel plates; the two ends of the SMA rod used for vertical seismic isolation are hinged with the upper and lower groups of V-shaped rigid arms through connectors, and the SMA rod and the connector are connected by threads. It is combined into an "SMA" frame for vertical seismic isolation, thereby achieving the improvement of the vertical seismic isolation performance of the structure on the basis of the original SMA-LNR in horizontal vibration isolation, and reducing the damage to the building after the earthquake. However, since the laminated rubber is a bonded connection between the laminated rubber and the stiffening steel plate, the vertical tensile resistance of the laminated rubber is weak, and it cannot resist the vertical tensile force, causing the building structure to overturn and collapse. Summary of the invention

[0005] The purpose of the present invention is to provide an earthquake-resistant device and implementation method for wooden building pillars, which is used at the column foot of the pillar and has the function of reducing the horizontal and vertical destructive forces of earthquakes. It also has the function of resisting compression and vertical tension to prevent the wooden building structure from overturning and collapsing.

[0006] The invention relates to a seismic device for supporting columns of wooden buildings, wherein the seismic device comprises a steel base, a column supporting steel base plate, a connecting steel sleeve, an annular pressure plate, a pressure dividing plate, a bolt and a butterfly spring, wherein a circular groove is arranged in the middle of the upper end surface of the steel base, the column supporting steel base plate is in a truncated cone shape, the middle of the upper end surface of the column supporting steel base plate is fixed as a whole with the lower end of the connecting steel sleeve, a clamping groove is arranged around the lower part of the docking column, a plurality of screw holes are arranged on the peripheral wall of the connecting steel sleeve at a distance, the connecting steel sleeve is fixed to the outer peripheral wall of the column with the clamping groove by screws passing through the screw holes, the lower end surface of the column supporting steel base plate is supported in the circular groove of the steel base, the lower end surface of the butterfly spring is supported on the edge of the upper end surface of the column supporting steel base plate outside the connecting steel sleeve, the upper end surface of the butterfly spring is supported on the lower end surface of the pressure dividing plate, the annular pressure plate is fixed to the peripheral part of the upper end surface of the steel base by a plurality of bolts at a distance, and the upper end surface of the pressure dividing plate is supported on the inner side surface of the lower end of the annular pressure plate.

[0007] Preferably, the ratio of the inner diameter length of the circular groove on the steel base to the outer diameter length of the column supporting steel base plate is 1.8 to 2:1.

[0008] Preferably, the inner bottom surface of the circular groove and the lower end surface of the column-supported steel seat plate are adapted in shape, and are either mutually supporting planes or mutually supporting circular arc surfaces.

[0009] Preferably, the central axis of the connecting steel sleeve is in the same straight line as the central axis of the docking support column and the center line of the column supporting steel seat plate.

[0010] Preferably, the inner diameter length of the annular pressure plate is smaller than the outer diameter length of the pressure dividing plate.

[0011] Preferably, the steel base is fixed in the base layer at the lower end of the pillar, the upper end surface of the annular pressure plate is flush with the upper end surface of the base layer, and a column foot guard is provided around the pillar on the upper end surface of the annular pressure plate.

[0012] Preferably, the inner bottom surface of the circular groove and the lower end surface of the column supporting steel seat plate are respectively provided with a wear-resistant layer.

[0013] A method for implementing an earthquake-resistant device for a wooden building pillar comprises the following steps:

[0014] (1) Preparing earthquake-resistant devices for wooden building pillars: preparing the required number of earthquake-resistant devices according to the number of pillars constituting the wooden building column frame layer, with each pillar being provided with a earthquake-resistant device at the lower end, the earthquake-resistant device comprising a steel base, a column support steel base plate, a connecting steel sleeve, an annular pressure plate, a pressure dividing plate, bolts and a butterfly spring;

[0015] The outer diameter length of the connecting steel sleeve is the same as the outer diameter length of the pillar, the outer diameter length of the column support steel base plate is greater than the outer diameter length of the connecting steel sleeve, and the ratio of the inner diameter length of the circular groove on the steel base to the outer diameter length of the column support steel base plate is 1.8 to 2:1;

[0016] The inner diameter length of the annular pressure plate is smaller than the outer diameter length of the pressure dividing plate; the ratio of the inner diameter length of the annular pressure plate to the outer diameter length of the connecting steel sleeve is 1.8 to 2:1;

[0017] The inner bottom surface of the circular groove and the lower end surface of the column supporting steel base plate are adapted in shape, either being mutually supported flat surfaces or mutually supported circular arc surfaces;

[0018] (2) Processing of the lower part of each pillar: reduce the moisture content of the pillar to 10%, process the lower end surface of the pillar into a horizontal plane, and prepare a snap-fit ​​groove around the lower part of each pillar. The width of the snap-fit ​​groove is equal to the width of the edge of the connecting steel sleeve, the length of the snap-fit ​​groove is the same as the length of the connecting steel sleeve, and the diameter of the lower end surface of the pillar in the snap-fit ​​groove is adapted to the inner diameter of the connecting steel sleeve;

[0019] (3) Installation of seismic devices:

[0020] (a) Fix each steel base in the base layer corresponding to the lower end of each pillar, so that the center point of the steel base and the center point of the circular groove in the middle of the upper end surface of the steel base coincide with the center point of the position of the corresponding pillar on the base layer;

[0021] (b) a butterfly spring and a pressure dividing plate are sequentially sleeved on the outer side of the connecting steel sleeve at the upper end of the column supporting steel seat plate;

[0022] (c) Each connecting steel sleeve is fitted onto the engaging groove of each pillar from the open end, the pillar at the lower end of the engaging groove is located in the connecting steel sleeve, the lower end surface of the pillar is supported on the upper end edge of the connecting steel sleeve and the upper end surface of the pillar supporting steel seat plate, a plurality of screw holes are provided at intervals on the peripheral wall of the connecting steel sleeve, and the connecting steel sleeve is fixed to the outer peripheral wall of the pillar with the engaging groove by screws passing through the screw holes;

[0023] (d) The lower end of the pillar with the column-supported steel seat plate is placed in the circular groove of the steel base, and the lower end surface of the column-supported steel seat plate is supported on the inner end surface of the circular groove. Then, the outer edge of the annular pressure plate inserted into the lower part of the pillar is fixed to the upper end surface of the steel base by a plurality of bolts, so that the lower end surface of the column-supported steel seat plate is supported in the circular groove of the steel base, the lower end surface of the butterfly spring is supported on the edge of the upper end surface of the column-supported steel seat plate connected to the outer side of the steel sleeve, the upper end surface of the butterfly spring is supported on the lower end surface of the pressure dividing plate, the annular pressure plate is fixed to the peripheral portion of the upper end surface of the steel base by a plurality of bolts at intervals, and the upper end surface of the pressure dividing plate is supported on the inner side surface of the lower end of the annular pressure plate;

[0024] (4) Correction of the seismic device: make the central axis of the connecting steel sleeve, the central axis of the docking pillar, the center line of the column supporting steel seat plate, and the midpoint of the circular groove in the same straight line;

[0025] (5) The upper parts of the pillars are connected to each other through the frame beams to form a column frame layer of the wooden building, so that the upper end surface of the annular pressure plate is flush with the upper end surface of the platform base, and a column foot protection plate is provided on the upper end surface of the annular pressure plate around the pillar, and a paving layer and a layer cover layer are provided on the upper end of the column frame layer to form a wooden building with a wooden building pillar earthquake-resistant device;

[0026] (6) Resetting of the seismic device after an earthquake: A top-pressing device is installed at the bottom of each pillar in the displacement direction to reset each pillar in the displacement direction so that the distance from the outer wall of the connecting steel sleeve to the inner ring of the annular pressure plate is the same, that is, the central axis of the connecting steel sleeve is in the same straight line as the central axis of the docking pillar, the center line of the column support steel seat plate, and the midpoint of the circular groove.

[0027] Preferably, the contraction pressure of the butterfly spring is greater than the value obtained by dividing the total weight of the wooden building by the number of pillars.

[0028] Preferably, resetting each pillar in the pressing displacement direction comprises resetting each pillar in the pressing or pulling displacement direction using a mechanical hydraulic jack.

[0029] The above structural design and method achieve the purpose of the present invention.

[0030] The invention is used at the column foot of a pillar, has the function of reducing the horizontal and vertical destructive forces of an earthquake, and also has the function of resisting compression and vertical tension, and preventing the wooden building structure from overturning and collapsing.

[0031] The present invention has the following advantages over traditional wooden building pillars:

[0032] (1) The present invention has the function of reducing the horizontal destructive force of earthquakes. The lower end of the traditional wooden building pillar is placed on a stone pillar foundation with the same area as its lower end surface. When an earthquake causes horizontal displacement, the displacement and shock absorption distance of the lower end surface of the traditional wooden building pillar on the stone pillar foundation is limited. If the lower end surface of the wooden building pillar is displaced beyond the stone pillar foundation, the traditional wooden building pillar will lose support and the traditional wooden building will overturn and collapse. The structural design of the present invention increases the displacement and shock absorption distance of the lower end surface of the wooden building pillar within the circular groove of the steel base by several times, and limits the displacement of the lower end surface of the wooden building pillar within the circular groove, which greatly increases the displacement and shock absorption effect of the present invention and has excellent earthquake resistance.

[0033] (2) The present invention has the function of reducing the vertical destructive force of earthquakes. The lower end of the traditional wooden building pillar is placed on a stone pillar foundation with the same area as its lower end surface. When the vertical earthquake fluctuates or the traditional wooden building is subjected to lateral strong winds, it is very easy to cause the traditional wooden building to become unstable and collapse. The structural design of the present invention allows the lower end of the wooden building pillar to be elastically fixed in the steel base through the column support steel base plate, connecting steel sleeve, annular pressure plate, pressure dividing plate, bolts and butterfly springs, which greatly increases the vertical shock absorption effect of the present invention and prevents overturning and collapse.

[0034] (3) The present invention has a simple structure and low cost, does not affect its use in wooden buildings, has a long service life, and has low maintenance costs and post-earthquake repair costs, and can effectively reduce the damage rate of wooden buildings in earthquakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA section. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with specific examples, but the following examples are only preferred embodiments of the present invention, not all. Based on the examples in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following examples, unless otherwise specified, are conventional methods, and the materials, devices, equipment, reagents, etc. used in the following examples, unless otherwise specified, can all be obtained from commercial channels.

[0038] Example 1: Figure 1 and Figure 2 As shown, an anti-seismic device for wooden building pillars includes a steel base 7, a column support steel base plate 10, a connecting steel sleeve 9, an annular pressure plate 5, a pressure dividing plate 1, a bolt 6 and a butterfly spring 8. A circular groove 15 is provided in the middle of the upper end surface of the steel base. The column support steel base plate 10 is truncated, and the middle of the upper end surface of the column support steel base plate and the lower end of the connecting steel sleeve 9 are fixed as a whole by welding. A clamping groove 2 is provided around the lower part of the docking pillar 3, and a plurality of screw holes 13 are drilled at intervals on the peripheral wall of the connecting steel sleeve 9. The connecting steel sleeve is fixed to the outer peripheral wall of the pillar with the clamping groove by screws 12 passing through the screw holes. The lower end surface of the column support steel base plate is supported in the circular groove of the steel base, the lower end surface of the butterfly spring 8 is supported on the edge of the upper end surface of the column support steel base plate outside the connecting steel sleeve, and the upper end surface of the butterfly spring is supported on the lower end surface of the pressure dividing plate 1. The annular pressure plate is fixed to the peripheral portion of the upper end surface of the steel base by a plurality of bolts 6 at intervals, and the upper end surface of the pressure dividing plate 1 is supported on the inner side surface of the lower end of the annular pressure plate.

[0039] The steel base 7, the column supporting steel base plate 10, the connecting steel sleeve 9, the annular pressure plate 5, the pressure dividing plate 1 and the bolt 6 are all made of steel material. The steel base and the column supporting steel base plate should be thick enough to withstand the pressure of the wooden building.

[0040] The ratio of the inner diameter length of the circular groove on the steel base to the outer diameter length of the column support steel base plate is 1.8 to 2:1: to ensure that during an earthquake, the column support steel base plate can have sufficient horizontal displacement in the circular groove to reduce the destructive force of the earthquake.

[0041] The inner bottom surface of the circular groove 15 and the lower end surface of the column support steel base plate 10 are adapted in shape and are mutually supported planes, which can withstand the pressure transmitted by the wooden building and facilitate the column support steel base plate to translate in the circular groove, thereby reducing the destructive force of earthquakes.

[0042] The central axis of the connecting steel sleeve is in the same straight line as the central axis of the butt support and the center line of the column supporting steel seat plate, which is conducive to the installation of the earthquake-resistant device, pressure balance and the resetting of the support after an earthquake.

[0043] The inner diameter length of the annular pressure plate is smaller than the outer diameter length of the pressure dividing plate so as to limit the moving range of the pressure dividing plate.

[0044] The steel base is fixed in the base layer at the lower end of the pillar. The fixation includes welding embedded steel bars on the outer peripheral wall of the steel base, and fixing the steel base in a preset position of the base layer by Taozhu concrete cement. When the steel base is fixed in the base layer at the lower end of the pillar, the steel base is in a horizontal state.

[0045] The upper end surface of the annular pressure plate is flush with the upper end surface of the platform base, and a column foot protection plate 4 is provided around the pillar on the upper end surface of the annular pressure plate; the column foot protection plate should be placed on the upper end surface of the platform base without affecting the displacement of the docking pillar, and the column foot protection plate is used to decorate the lower part of the pillar.

[0046] The inner bottom surface of the circular groove and the lower end surface of the column supporting steel base plate are respectively provided with a wear-resistant layer. The wear-resistant layer can be a silicon carbide wear-resistant material, polyethylene wear-resistant material, composite ceramic wear-resistant material, alumina ceramic coating, chromium oxide ceramic coating, zirconium oxide ceramic coating, etc., which are arranged on the inner bottom surface of the circular groove or the lower end surface of the column supporting steel base plate to increase the strength, rigidity and shock resistance of the above-mentioned parts.

[0047] A method for implementing an earthquake-resistant device for a wooden building pillar comprises the following steps:

[0048] (1) Preparing earthquake-resistant devices for wooden building pillars: preparing the required number of earthquake-resistant devices according to the number of pillars constituting the wooden building column frame layer, with each pillar being provided with a earthquake-resistant device at the lower end, the earthquake-resistant device comprising a steel base, a column support steel base plate, a connecting steel sleeve, an annular pressure plate, a pressure dividing plate, bolts and a butterfly spring;

[0049] The outer diameter length of the connecting steel sleeve is the same as the outer diameter length of the pillar, the outer diameter length of the column support steel base plate is greater than the outer diameter length of the connecting steel sleeve, and the ratio of the inner diameter length of the circular groove on the steel base to the outer diameter length of the column support steel base plate is 1.8 to 2:1;

[0050] The inner diameter length of the annular pressure plate is smaller than the outer diameter length of the pressure dividing plate; the ratio of the inner diameter length of the annular pressure plate to the outer diameter length of the connecting steel sleeve is 1.8 to 2:1;

[0051] The inner bottom surface of the circular groove and the lower end surface of the column supporting steel seat plate are matched in shape, and are either mutually supported planes or mutually supported circular arc surfaces.

[0052] (2) Processing of the lower part of each pillar: reduce the moisture content of the pillar to 10%, process the lower end surface of the pillar into a horizontal plane, and prepare a snap-fit ​​groove 2 around the lower part of the lower end of each pillar. The width of the snap-fit ​​groove is equal to the width of the edge of the connecting steel sleeve, the length of the snap-fit ​​groove is the same as the length of the connecting steel sleeve, and the diameter of the lower end surface of the pillar in the snap-fit ​​groove is adapted to the inner diameter of the connecting steel sleeve; that is, the lower end of the pillar in the snap-fit ​​groove can be inserted into the connecting steel sleeve.

[0053] (3) Installation of seismic devices:

[0054] (a) Fix each steel base in the corresponding part of the lower end of each pillar. The fixation includes welding pre-buried steel bars on the outer peripheral wall of the steel base, and fixing the steel base in the preset position of the base through Taozhu concrete cement. When the steel base is fixed in the base at the lower end of the pillar, the steel base is in a horizontal state. The center point of the steel base and the center point of the circular groove in the middle of the upper end surface of the steel base coincide with the center point of the position on the base where the corresponding pillar is designed;

[0055] (b) a butterfly spring 8 and a pressure dividing plate 1 are sequentially sleeved on the outer side of the connecting steel sleeve at the upper end of the column supporting steel seat plate;

[0056] The contraction pressure of each butterfly spring is greater than the total weight of the wooden building divided by the number of pillars. For example, if the total weight of the wooden building is 8 tons and the number of pillars is 8, the contraction pressure of each butterfly spring should be greater than 1 ton.

[0057] (c) Each connecting steel sleeve is fitted onto the engaging groove of each pillar from the open end, the pillar at the lower end of the engaging groove is located in the connecting steel sleeve, the lower end surface of the pillar is supported on the upper end edge of the connecting steel sleeve and the upper end surface of the pillar supporting steel seat plate, a plurality of screw holes are provided at intervals on the peripheral wall of the connecting steel sleeve, and the connecting steel sleeve is fixed to the outer peripheral wall of the pillar with the engaging groove by screws passing through the screw holes;

[0058] (d) The lower end of the pillar with the column-supported steel seat plate is placed in the circular groove of the steel base, and the lower end surface of the column-supported steel seat plate is supported on the inner end surface of the circular groove. Then, the outer edge of the annular pressure plate inserted into the lower part of the pillar is fixed to the upper end surface of the steel base by a plurality of bolts, so that the lower end surface of the column-supported steel seat plate is supported in the circular groove of the steel base, the lower end surface of the butterfly spring is supported on the edge of the upper end surface of the column-supported steel seat plate connected to the outer side of the steel sleeve, the upper end surface of the butterfly spring is supported on the lower end surface of the pressure dividing plate, the annular pressure plate is fixed to the peripheral portion of the upper end surface of the steel base by a plurality of bolts at intervals, and the upper end surface of the pressure dividing plate is supported on the inner side surface of the lower end of the annular pressure plate;

[0059] (4) Correction of the seismic device: make the central axis of the connecting steel sleeve, the central axis of the docking pillar, the center line of the column supporting steel seat plate, and the midpoint of the circular groove in the same straight line;

[0060] (5) The upper parts of the pillars are connected to each other through the frame beams to form a column frame layer of the wooden building, so that the upper end surface of the annular pressure plate is flush with the upper end surface of the platform base, and a column foot protection plate is provided on the upper end surface of the annular pressure plate around the pillar, and a paving layer and a layer cover layer are provided on the upper end of the column frame layer to form a wooden building with a wooden building pillar earthquake-resistant device;

[0061] (6) Resetting of the seismic device after an earthquake: A top-pressing device is installed at the bottom of each pillar in the displacement direction to reset each pillar in the displacement direction so that the distance from the outer wall of the connecting steel sleeve to the inner ring of the annular pressure plate is the same, that is, the central axis of the connecting steel sleeve is in the same straight line as the central axis of the docking pillar, the center line of the column support steel seat plate, and the midpoint of the circular groove.

[0062] Resetting the pillars in the top-pressure displacement direction includes resetting the pillars in the top-pressure displacement direction by using a manual or mechanical hydraulic jack, or resetting the pillars in the top-pressure displacement direction by using a manual or mechanical traction device, such as a hand chain hoist.

[0063] During an earthquake, no matter the earthquake causes the platform base to move horizontally (including horizontal movement in any direction), or to fluctuate vertically, or to fluctuate horizontally and vertically at the same time; each pillar of the present invention can displace and absorb shock in the circular groove on the steel base by means of the column supporting steel base plate at its lower end, and can reduce vertical force under the action of the limit butterfly spring, thereby greatly reducing the damage caused by the earthquake.

[0064] Example 2: Figure 1 and Figure 2As shown, the difference from Example 1 is that the inner bottom surface of the circular groove and the lower end surface of the column support steel base plate are adapted in shape, and are circular arc surfaces that support each other, that is, the inner bottom surface of the circular groove is a concave arc surface, and the lower end surface of the column support steel base plate is a convex arc surface corresponding to the concave arc surface. The convex arc surface of the lower end surface of the column support steel base plate fits on the concave arc surface of the inner bottom surface of the circular groove, and the center points of the concave arc surface, the convex arc surface and the circular groove are all on a straight line. The circular arc surface design can make the column support steel base plate automatically reset on the inner bottom surface of the circular groove, and the other functions are the same. The rest is the same as Example 1, so it will not be repeated.

[0065] The test data of the various embodiments of the present invention for resisting and weakening seismic waves are as follows:

[0066] (1) Test conditions: The reference material is: three pine wood pillars with a diameter of 30 cm and a length of 5 meters. The pine wood pillars are distributed in a triangle shape, with a distance of 1 meter between adjacent pine wood pillars. The upper ends of adjacent pine wood pillars are fixedly connected by a crossbeam;

[0067] The test material is: three pine wood pillars with the same diameter and anti-seismic devices, each pine wood pillar is distributed in a triangle, the interval between adjacent pine wood pillars is 1m, and the upper ends of adjacent pine wood pillars are fixedly connected by crossbeams;

[0068] The lower end surface of the comparison material is placed on the earthquake simulation test bench, and the periphery of the lower end surface of each comparison material is marked with a chalk line (equivalent to the periphery line of the stone column foundation range in the foundation), and the steel base at the lower end of the test material of each embodiment is fixed on the earthquake simulation test bench. The numerical results of the upper end surface of the comparison material and the test material of each embodiment in the simulated earthquake level are as follows:

[0069] (1) Table 1:

[0070]

[0071] (2) Based on the above test, a gravitational force is applied outwards from the middle of the crossbeam on any side of the triangle until the lower end face of the corresponding pine wood support is separated from the upper end face of the earthquake simulation test platform (simulating vertical tensile force).

[0072] When a gravitational force of less than 1 ton was applied to the comparison material, at least one of its lower end surfaces detached from the test bench and its periphery was marked with chalk, and the simulation result was overturning and collapse; while for the pine wood support frame with anti-seismic device, when a gravitational force of 10 tons was applied, the lower ends of all the supports on the pine wood support frame with anti-seismic device were on the steel base, and the simulation result was normal.

[0073] Table 1 shows that the test values ​​of the pillars with seismic resistance devices can drop by 2 to 3 simulated earthquake levels in the simulated earthquake level, among which: under the simulated magnitude 5 earthquake for 8 seconds, at least one of the lower end faces of the reference material was detached from the test bench and its periphery was marked with chalk, and the simulated result was overturning and collapse; under the simulated magnitude 8 earthquake for 8 seconds, the lower ends of the pillars on the pine wood pillar frame with seismic resistance devices were all on the steel base, and the simulated result was normal.

[0074] This shows that the present invention has the function of reducing the horizontal and vertical destructive forces of earthquakes, and also has the function of resisting compression and vertical tension, and preventing the wooden building structure from overturning and collapsing.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A seismic device for wooden building pillars, Features The anti-seismic device comprises a steel base, a column supporting steel base plate, a connecting steel sleeve, an annular pressure plate, a pressure dividing plate, bolts and a butterfly spring. A circular groove is provided in the middle of the upper end surface of the steel base. The column supporting steel base plate is truncated cone-shaped. The middle of the upper end surface of the column supporting steel base plate is fixed as a whole with the lower end of the connecting steel sleeve. A locking groove is provided around the lower part of the docking pillar. A plurality of screw holes are provided on the peripheral wall of the connecting steel sleeve at a distance. The connecting steel sleeve is fixed to the outer peripheral wall of the pillar with the locking groove by screws passing through the screw holes. The lower end surface of the column supporting steel base plate is supported in the circular groove of the steel base, the lower end surface of the butterfly spring is supported on the edge of the upper end surface of the column supporting steel base plate outside the connecting steel sleeve, the upper end surface of the butterfly spring is supported on the lower end surface of the pressure dividing plate, the annular pressure plate is fixed to the peripheral part of the upper end surface of the steel base by a plurality of bolts at a distance, and the upper end surface of the pressure dividing plate is supported on the inner side surface of the lower end of the annular pressure plate.

2. An anti-seismic device for wooden building pillars according to claim 1, Features : The ratio of the inner diameter length of the circular groove on the steel base to the outer diameter length of the column supporting steel base plate is 1.8 to 2:

1.

3. An anti-seismic device for wooden building pillars according to claim 1, Features The inner bottom surface of the circular groove and the lower end surface of the column supporting steel seat plate are adapted in shape, and are either mutually supporting planes or mutually supporting circular arc surfaces.

4. A seismic device for wooden building pillars according to claim 1, Features : The central axis of the connecting steel sleeve is in the same straight line as the central axis of the docking pillar and the center line of the column supporting steel seat plate.

5. An anti-seismic device for wooden building pillars according to claim 1, Features :The inner diameter length of the annular pressure plate is smaller than the outer diameter length of the pressure dividing plate.

6. An earthquake-resistant device for wooden building pillars according to claim 1, Features The steel base is fixed in the base layer at the lower end of the pillar, the upper end surface of the annular pressure plate is flush with the upper end surface of the base layer, and a column foot guard is provided around the pillar on the upper end surface of the annular pressure plate.

7. An anti-seismic device for wooden building pillars according to claim 1, Features The inner bottom surface of the circular groove and the lower end surface of the column supporting steel seat plate are respectively provided with a wear-resistant layer.

8. A method of using the earthquake-resistant device for wooden building pillars according to claim 1, It is characterized in that The steps include: (1) Preparing earthquake-resistant devices for wooden building pillars: preparing the required number of earthquake-resistant devices according to the number of pillars constituting the wooden building column frame layer, with each pillar being provided with a earthquake-resistant device at the lower end, the earthquake-resistant device comprising a steel base, a column support steel base plate, a connecting steel sleeve, an annular pressure plate, a pressure dividing plate, bolts and a butterfly spring; The outer diameter length of the connecting steel sleeve is the same as the outer diameter length of the pillar, the outer diameter length of the column support steel base plate is greater than the outer diameter length of the connecting steel sleeve, and the ratio of the inner diameter length of the circular groove on the steel base to the outer diameter length of the column support steel base plate is 1.8 to 2:1; The inner diameter length of the annular pressure plate is smaller than the outer diameter length of the pressure dividing plate; the ratio of the inner diameter length of the annular pressure plate to the outer diameter length of the connecting steel sleeve is 1.8 to 2:1; The inner bottom surface of the circular groove and the lower end surface of the column supporting steel base plate are adapted in shape, either being mutually supported flat surfaces or mutually supported circular arc surfaces; (2) Processing of the lower part of each pillar: reduce the moisture content of the pillar to 10%, process the lower end surface of the pillar into a horizontal plane, and prepare a snap-fit ​​groove around the lower part of each pillar. The width of the snap-fit ​​groove is equal to the width of the edge of the connecting steel sleeve, the length of the snap-fit ​​groove is the same as the length of the connecting steel sleeve, and the diameter of the lower end surface of the pillar in the snap-fit ​​groove is adapted to the inner diameter of the connecting steel sleeve; (3) Installation of seismic devices: (a) Fix each steel base in the base layer corresponding to the lower end of each pillar, so that the center point of the steel base and the center point of the circular groove in the middle of the upper end surface of the steel base coincide with the center point of the position of the corresponding pillar on the base layer; (b) a butterfly spring and a pressure dividing plate are sequentially sleeved on the outer side of the connecting steel sleeve at the upper end of the column supporting steel seat plate; (c) Each connecting steel sleeve is fitted onto the engaging groove of each pillar from the open end, the pillar at the lower end of the engaging groove is located in the connecting steel sleeve, the lower end surface of the pillar is supported on the upper end edge of the connecting steel sleeve and the upper end surface of the pillar supporting steel seat plate, a plurality of screw holes are provided at intervals on the peripheral wall of the connecting steel sleeve, and the connecting steel sleeve is fixed to the outer peripheral wall of the pillar with the engaging groove by screws passing through the screw holes; (d) The lower end of the pillar with the column-supported steel seat plate is placed in the circular groove of the steel base, and the lower end surface of the column-supported steel seat plate is supported on the inner end surface of the circular groove. Then, the outer edge of the annular pressure plate inserted into the lower part of the pillar is fixed to the upper end surface of the steel base by a plurality of bolts, so that the lower end surface of the column-supported steel seat plate is supported in the circular groove of the steel base, the lower end surface of the butterfly spring is supported on the edge of the upper end surface of the column-supported steel seat plate connected to the outer side of the steel sleeve, the upper end surface of the butterfly spring is supported on the lower end surface of the pressure dividing plate, the annular pressure plate is fixed to the peripheral portion of the upper end surface of the steel base by a plurality of bolts at intervals, and the upper end surface of the pressure dividing plate is supported on the inner side surface of the lower end of the annular pressure plate; (4) Correction of the seismic device: make the central axis of the connecting steel sleeve, the central axis of the docking pillar, the center line of the column supporting steel seat plate, and the midpoint of the circular groove in the same straight line; (5) The upper parts of the pillars are connected to each other through the frame beams to form a column frame layer of the wooden building, so that the upper end surface of the annular pressure plate is flush with the upper end surface of the platform base, and a column foot protection plate is provided on the upper end surface of the annular pressure plate around the pillar, and a paving layer and a layer cover layer are provided on the upper end of the column frame layer to form a wooden building with a wooden building pillar earthquake-resistant device; (6) Resetting of the seismic device after an earthquake: A top-pressing device is installed at the bottom of each pillar in the displacement direction to reset each pillar in the displacement direction so that the distance from the outer wall of the connecting steel sleeve to the inner ring of the annular pressure plate is the same, that is, the central axis of the connecting steel sleeve is in the same straight line as the central axis of the docking pillar, the center line of the column support steel seat plate, and the midpoint of the circular groove.

9. The method according to claim 8, Features The contraction pressure of the butterfly spring is greater than the value obtained by dividing the total weight of the wooden building by the number of pillars.

10. The method according to claim 8, Features The resetting of each pillar in the top pressure displacement direction includes using a mechanical hydraulic jack to reset each pillar in the top pressure or traction displacement direction.

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