JPH068772B2 - Vertical vibration type seismic test equipment for building side walls - Google Patents

Description

The present invention relates to a vertical vibration type seismic test apparatus for obtaining data on vertical seismic performance of a building side wall.

[Conventional technology]

As a performance testing device for building side walls, there is one disclosed in Japanese Utility Model Publication No. 59-77045.

That is, a support member is projected outward from the upper end of a fixed polygonal main frame having at least one corner, and a pillar is hung vertically downward from the support member, and a lateral slab is provided on the pillar. This is a performance testing device for the side wall of a building that is equipped with.

Here, the building side wall, which is the DUT, is attached to the slab, and the side wall attachment surface formed by the pillar and the slab is vibrated to test the seismic performance.

[Problems to be Solved by the Invention]

In this performance testing device for the side wall of a building, the pillar vertically hung is pivotally attached to the support member provided at the upper end of the main frame by a pin, and the lower part of the pillar or the bottom layer of the slab is hydraulically operated. Perform a seismic test by rocking with a cylinder or the like.

Here, it is possible to perform a vibration test in the lateral direction or in a direction orthogonal to the side wall mounting surface within the side wall mounting surface formed by the pillar and the slab, but it is not possible to perform a vibration test in the vertical direction within the side wall mounting surface. It was impossible.

In addition, when an actual high-rise building encounters an earthquake, it causes a complicated change that combines vertical vibration and wavy deflection, and if you see a part of its side wall, it will not be displaced parallel to the vertical direction. Not the vertical compressive stress,
Tensile stress acts on the opposite side wall. But,
Seismic test equipment for building side walls that can perform a seismic test assuming such vertical vibration has not yet been provided.

[Means for Solving the Problems]

In view of the above problems, the present invention provides a fixed main frame composed of a frame having a substantially rectangular parallelepiped shape in which a plurality of columns are erected in the vertical direction, and is independently vibratably supported by the columns of the main frame. , A plurality of slabs that are arranged side by side in the vertical direction in a spaced apart manner and that form a test object mounting surface on at least the front surface, and displacement of each slab in a direction parallel and orthogonal to the test object mounting surface in a horizontal plane. A guide means that regulates and guides the front slab so that it can only vibrate vertically within the mounting surface of the DUT, and vibrates vertically in the front mounting surface of the DUT independently of other slabs. To let
A vertical vibration type seismic test apparatus for a building side wall having a plurality of hydraulic vibrating means provided between each slab and a pillar is configured.

Here, the slab can be formed in a substantially L shape in a plan view, or can be formed in a substantially U shape in a plan view.

The guide means may be composed of a guide member arranged in the vertical direction and a guide roller rolling on the guide member, and each slab is guided in the vertical direction in the mounting surface of the DUT on the front surface. It is also possible to configure it with an oilless bearing.

[Action]

The present invention is configured as described above, and a test object such as a building side wall is attached to the test object mounting surface formed on the front surface or front surface and side surface of the slab, and the slab corresponding to each layer is vertically moved by hydraulic vibrating means. A vertical seismic performance test is carried out within the mounting surface of the device under test by vibrating along the support column by means of the direction guiding means.

〔Example〕

 The details of the present invention will be explained based on illustrated embodiments.

FIG. 1 is a conceptual explanatory view of a seismic resistance test apparatus for a side wall of a building according to the present invention.

In the figure, reference numeral 1 denotes a main frame made of a substantially rectangular parallelepiped frame, which is fixed to a floor 2.

The main frame 1 is provided with an observing table, which facilitates attachment of the device under test and observation of the test condition.

Reference numeral 3 denotes a pillar vertically fixed between the upper end of the main frame 1 and the floor 2, and the pillar 3 is provided on at least one side surface of the main frame 1 and sandwiches one corner. It can be provided on two side faces, three side faces including two adjacent corner portions or the entire four side faces, and the one shown in the figure is provided on two side faces sandwiching one corner portion.

Reference numeral 4 denotes a fixed slab that is fixed at a position approximately in the middle of the height of the support pillar 3, and the fixed slab 4 is joined by sandwiching the support pillar 3 with, for example, two H-shaped steels.

In the illustrated embodiment, the test is performed on the L-shaped side wall, and it is assumed that the vibration or displacement in the vertical direction of the two side surfaces sandwiching one corner portion is assumed.

The fixed slab 4 formed in an L-shape is connected with the support pillar 3 sandwiched therebetween, and the fixing member 5 welded to the support slab 4 is connected to the support pillar 3.
Then, the fixed slab 4 and the support column 3 are connected to each other by tightening them with bolts or the like.

Reference numeral 6 denotes a movable slab, which are arranged above and below the fixed slab 4 in the same number, and are not shown in the drawing above the fixed slab 4.

This movable slab 6 is also constructed by joining H-shaped steels in the same manner as the fixed slab 4, and at the position where the support column 3 is sandwiched, a gap is provided corresponding to the earthquake resistance test, and
The front surface and the side surface of the fixed slab 4 and the movable slab 6 form a test object mounting surface P.

FIG. 2 is an enlarged sectional plan view of an essential part of an embodiment of the present invention, and FIG. 3 is an enlarged partial cutaway front view of an essential part of an embodiment of the present invention.

That is, guide means 7, 8 for guiding the movable slab 6 only in the vertical direction within the test object mounting surface P are attached to the support column 3. In the present embodiment, in a portion corresponding to the front surface side of the movable slab 6, a pair of guide means 7, 7 are arranged in front and back with the column 3 interposed therebetween, and in a horizontal plane, a direction orthogonal to the D-object mounting surface P. In addition to restricting the displacement of (1), guide means 8 are arranged on the opposite side surfaces of the columns 3 and 3 on both sides to restrict the displacement in the direction parallel to the test object mounting surface P in the horizontal plane.

As the guide means 7 and 8, a so-called oilless bearing in which a metal plate having a smooth surface is sandwiched can be used. In addition to this, a flat plate is provided on either the support column 3 or the movable slab 6. It is also possible to provide a guide member made of, for example, and a guide roller rolling on the guide member on the other side.

Reference numeral 9 is a hydraulic cylinder as a hydraulic vibrating means that is attached along the movable slab 6 and the support column 3 along the support column 3 and vibrates the movable slab 6. The movable slab 6 is connected to the plurality of hydraulic cylinders 9. , And the movable slab 6 is vibrated in the vertical direction within the mounting surface P of the device under test.

Although not shown, the hydraulic cylinder 9 is connected to a hydraulic device, and the distance by which the movable slab 6 is moved by the hydraulic cylinder 9 is controlled by a computer or the like according to each layer.

The height position of the fixed slab 4 can be changed by changing the fixing position of the fixing member 5 to the column 3, and the height of the movable slab 6 can be easily changed by changing the mounting position of the hydraulic cylinder 9. You can choose.

In the present invention, at least the fixed slab 4 and the movable slab 6 adjacent to the lower layer of the fixed slab may be provided, and the fixed slab 4 may be composed of the movable slab 6.

In the embodiment of the present invention as described above, the building side wall is mounted on the test object mounting surface P formed on the front surface or front and side surfaces of the slabs 4 and 6, and the movable slab 6 is mounted on the front mounting surface P by the hydraulic cylinder 9. It will vibrate vertically and perform a seismic test.

When the fixed slab 4 is replaced with the movable slab 6, the displacement amount of the hydraulic cylinder 9 of the movable slab 6 in the upper layer is maintained at 0, and the movable slab 6 located in the lower layer is vibrated to make the object to be tested. The vertical vibration test is performed.

As described above, in the vertical vibration type seismic resistance test apparatus for the side wall of the building according to the present invention, the test object is attached to the test object mounting surface P formed on the front surface of the slab, and the movable slab 6 is tested by the hydraulic cylinder 9. By vibrating only in the vertical direction within the body mounting surface P, it is possible to perform a vertical seismic performance test of the DUT.

Further, the fixed slab 4 and the movable slab 6 can be easily changed in height by changing the fixed member 5 and the hydraulic cylinder 9, so that it is easy to test various side walls as the DUT. It is possible.

〔The invention's effect〕

The vertical vibration-type seismic resistance test apparatus for the building side wall according to the present invention is configured as described above, and the building side wall mounted on the test object mounting surface configured on the front surface of the slab is moved in each mounting surface by the hydraulic cylinder. By vibrating the slab in a vertical direction to make it vibrate, it is possible to test the seismic performance in the vertical direction, and by changing the vertical vibration displacement of the slabs located above and below, the slab is compressed vertically in the side wall of the building. Both stress and tensile stress can be applied, and tests can be performed against vertical vibration and deformation due to earthquakes that occur on the sidewalls of real tall buildings.

Furthermore, since the height of the slab can be easily adjusted, it is possible to deal with various side walls.

[Brief description of drawings]

FIG. 1 is a conceptual explanatory view of a vertical vibration type seismic resistance test apparatus for a side wall of a building according to the present invention, FIG. 2 is an enlarged sectional plan view of an essential part of an embodiment, and FIG. 3 is an enlarged partial cutout of an essential part of the embodiment. It is a front view. 1: Main frame, 2: Floor part, 3: Strut, 4: Fixed slab, 5: Fixed member, 6: Movable slab, 7: Guide means, 8: Guide means, 9: Hydraulic cylinder. P: Mounting surface of test object.

Claims (5)

[Claims] 1. A stationary main frame composed of a substantially rectangular parallelepiped frame body in which a plurality of columns are erected in a vertical direction;
A plurality of slabs that are arranged side by side in the up-down direction and are spaced apart from each other, and that configure at least the front surface of the test object mounting surface and the displacement of each slab in a direction parallel and orthogonal to the test object mounting surface in a horizontal plane. And a guide means for guiding the front surface of the device under test so that it can only vibrate vertically, and vibrates each slab vertically in the front surface of the device under test mounting surface independently of other slabs. For this purpose, a vertical vibration-type seismic test device for the side wall of the building, which has a plurality of hydraulic vibration means provided between each slab and the columns. 2. The vertical vibration-type seismic test apparatus for a building side wall according to claim 1, wherein the slab has a substantially L shape in a plan view. 3. The vertical vibration-type seismic test apparatus for building side walls according to claim 1, wherein the slab has a substantially U-shape in a plan view. 4. The guide means according to claim 1, 2 or 3, wherein the guide means comprises a guide member arranged in a vertical direction and a guide roller rolling on the guide member.
Vertical vibration-type seismic resistance test equipment for the side wall of the building. 5. The oilless bearing for guiding each slab in the vertical direction within the surface of the device under test on which the slab is attached, as claimed in claim 1, claim 2, or claim 3.
Vertical vibration-type seismic resistance test equipment for the side wall of the building.