JP4352171B2 - Structure loading test apparatus and method - Google Patents

Description

  The present invention relates to a loading test apparatus for testing a mechanical characteristic of a structure by applying a load to a horizontal structure (including a specimen) such as an elevated expressway, a railway track, or a floor slab constituting a bridge, and Regarding the method.

  Generally, in order to calculate the rigidity of a structure or material by experiment, it is obtained from the relationship between the load and deformation by applying a load to the calculation target, but at this time, a load is applied to the structure or material. There is a loading test device.

  This device includes, for example, a loading plate arranged on a ground surface to be measured, a loading device for applying a load to the loading plate in combination with a reaction force device, and a settlement amount measuring device for measuring a settlement amount of the loading plate. , A load sensor for detecting a load applied to the jack driving device and the loading plate, and four laser displacement sensors arranged at different parts on the loading plate, each displacement sensor including itself and a reference plate The amount of settlement of the loading plate corresponding portion is detected based on the distance from the corresponding portion.

  According to this apparatus, the number of testers performing the flat plate loading test can be reduced as compared with the conventional method, the time and labor for processing the test results can be reduced as compared with the conventional method, and the time and cost required for the test can be reduced accordingly. It can be suppressed.

Japanese Patent Laid-Open No. 2002-296159 (first page, FIG. 1)

Thus, in order to obtain the rigidity of the material, a jack driving device having a very large loading force is required.
However, if it is going to grasp the mechanical characteristic of the full-scale structure of a building and a civil engineering structure, the jack drive device which has very big loading force will be needed, and it will become very difficult.

  Therefore, the present invention provides a structure loading test apparatus and method capable of grasping the mechanical characteristics of a full-scale structure of a building and a civil engineering structure even when using a jack drive device that does not have a relatively large loading force. The purpose is to provide.

In order to solve the above problems, the structure loading test apparatus and method according to the present invention employ the following technical means.
Specifically, a loading test apparatus for a structure according to a first aspect includes a boosting mechanism portion including a tension member and a pair of link portions, and a loading jack portion, and each of the link portions is a support member. A first component rod having a base pivotally attached to a supported structure, and a leading portion positioned between the component surface of the structure and the first component rod tip so as to have a substantially letter shape. The second configuration rod having a base pivotally attached to the first configuration rod tip portion, and the tension member is disposed on the configuration surface on the base portion of the structure or the support member on the support member side. The central part of the stretching member in the horizontal direction in a state in which the respective leading parts of the second structural rods are stretched so as to face each other outward or inward. in pivoted on the tension member to be symmetrical, the loading jack section, a reciprocable rod And a jack portion connected to each of a connecting portion between a tip portion of the first component rod and a base portion of the second component rod and the jack portion so as to be swingable so as to be substantially V-shaped. it comprises a rod, and wherein the benzalkonium be imparted a displacement of the structure in the structures is reciprocated through the booster mechanism.
According to a second aspect of the present invention, there is provided a structure loading test method comprising: mounting a base portion of a first configuration rod on a configuration surface of a structure supported by a support member; and connecting the configuration surface and the front portion of the first configuration rod. A base portion of the second configuration rod is pivotally attached to the tip portion of the first configuration rod so that the tip portion is positioned between the first configuration rod, and the first configuration pivot attachment and the second configuration A pair of pivotally attached structures are constructed, and a tension member is stretched along the component surface on the base of the structure on the support member side or the support member, and the second component collars are outside each other. Alternatively , pivotally attached to the stretching member so as to be symmetrical at a substantially central portion in the horizontal direction of the stretching member in a state in which the respective front portions of the second configuration rods are stretched so as to face inward. A connecting portion between the tip portion of the first component rod and the base portion of the second component rod and a jack portion having a reciprocating rod are substantially V-shaped. The connecting rod to so that bridging swingably, the rod of the jack portion is reciprocated, characterized in that imparts displacement to the structures.

The connecting portion between the tip portion of the first constituting rod and the base portion of the second constituting rod constituting the booster mechanism portion and the jack portion having a reciprocating rod are formed in a substantially V shape by the connecting rod. As the distance between the tip portions of the first component rods approaches or separates by moving the rod over the rod, the component surface of the structure moves with a movement amount smaller than the distance of the approach or separation Therefore, a boosting effect acts on the structural surface of the structure, and the pulling performance of the jack drive device can be improved by the boosting effect.
Therefore, even if it uses the jack drive device which does not have a comparatively big loading force, it can grasp | ascertain the dynamic characteristic of the full-scale structure of a building and a civil engineering structure.

  Next, a structure loading test apparatus according to the present embodiment will be described with reference to the accompanying drawings. In the figure, reference numeral 1 denotes a loading test apparatus, and reference numeral W denotes a floor slab (structure).

The structure loading test apparatus 1 according to the present embodiment includes a boost mechanism unit 11 and a loading jack unit 12, and is a bottom surface (constituent surface) of a floor slab W that is supported at both ends by a support member W2. It is arranged.
The booster mechanism unit 11 includes a tension member 111 and a link unit 112.

  The tension member 111 is made of a member having rigidity such as a cable material or a steel bar, and is formed along a desired structure that generates a tensile load, for example, the bottom surface of the floor slab W, and a second component to be described later. A required length is stretched so that a tip portion of 114 is pivotally attached and separated from the surface of the floor slab W by a required distance.

  The link part 112 includes a first part 11c between the bottom surface of the floor slab W and the front part 11b of the first structural part 113. And a second configuration rod 114 having a base portion 11d pivotally attached to a tip portion 11b of the first configuration rod 113 so as to have a substantially letter shape.

  And this link part 112 is arrange | positioned in the substantially-central part of the extending | stretching member 111 so that 2nd component eaves 114 may face each other outside, and is comprised by a pair, and the front part of the 2nd component eaves 114 11c are communicated with each other via a stretching member 111.

The loading jack portion 12 includes a jack portion 121 and a connecting rod 122.
The jack portion 121 is a hydraulic jack having a well-known structure including a reciprocating rod 12a, and is fixed to the base surface B below the center between the front portions 11b of the first component rod 113.

  The connecting rod 122 is made of a member having rigidity such as a steel bar, and includes a connecting portion between the tip portion 11b of the first component rod 113 and the base portion 11d of the second component rod 114, and the rod 12a of the jack portion 121. It is bridged so as to be substantially V-shaped and pivotably pivoted.

  The loading test apparatus 1 according to the present embodiment configured as described above moves the rod 12a, thereby connecting the front portion 11b of the first configuration rod 113 and the second configuration rod 114 via the connection rod 122. The distance between the connecting portions with the base portion 11d approaches or separates.

  For example, in FIG. 1, as illustrated with a two-dot chain line, when the rod 12a is projected, the first component rod 113 that is rotatably constrained by the second component rod 114 has the base portion 11a as a fulcrum. The distance between the front portions 11b is increased, and the pivoted portions are constrained although being rotated, so that the floor slab W is pulled downward as illustrated.

  At this time, since the moving amount (L1) of the floor slab W pulled downward is smaller than the moving distance (L2) of the rod 12a, the boosting effect acts on the floor slab W, and the boosting action thereof. The pulling performance of the jack part 121 is improved by that much.

  Therefore, even if it uses the jack part 121 which does not have comparatively big loading force, it can grasp | ascertain the dynamic characteristic of the full-scale structure of a building and a civil engineering structure.

  As mentioned above, although the loading test apparatus concerning this embodiment was demonstrated, embodiment mentioned above shows an example of suitable embodiment of this invention, and this invention is not limited to it, The summary is shown. Various modifications can be made without departing from the scope.

  For example, in order to improve the rigidity, the tip portions of the first configuration rod may be pivotally attached with a tie rod that can be expanded and contracted. In addition, the link portion may be disposed on the stretching member so that the second configuration rods face each other.

  Further, the base portion of the first component ridge is pivotally attached to the floor slab supported by the support member, and the tip portion is positioned between the floor slab and the tip portion of the first component ridge so as to have a substantially letter shape. The base part of the second configuration rod is pivotally attached to the front portion of the first configuration rod, and is stretched along the floor slab on the base portion of the floor slab so that the second configuration rods face each other outward or inward. Each of the front ends of the second configuration rod is pivotally attached at the substantially central portion of the tension member, and each of the connecting portions between the front portion of the first configuration rod and the base portion of the second configuration rod is provided with a reciprocating rod. Further, a method may be used in which the connecting rod is slidably bridged so that the jack portion is substantially V-shaped, and the rod of the jack portion is reciprocated to impart displacement to the floor slab.

It is the front view which showed the outline of the loading test apparatus concerning this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loading test apparatus 11 Booster mechanism part 111 Tension member 112 Link part 113 1st structure rod 11a Base (of 1st structure rod)
11b Tip (of the first component)
114 Second component 11c Front part (second component)
11d Base (of the second component)
12 Loading jack portion 121 Jack portion 12a Rod 122 Connecting rod W Floor slab (structure)
W2 support member

Claims (2)

A booster mechanism having a tension member and a pair of links, and a loading jack,
Each said link part is
A first component rod having a base pivotally attached to a structure supported by a support member, and a front portion positioned between a component surface of the structure and the first component rod tip, And a second configuration rod having a base pivotally attached to the first configuration tip portion ,
The tension member is stretched to the base of the structure on the support member side or the support member so as to be along the configuration surface, and the second configuration collars are directed to the outside or the inside. Pivotally attached to the stretching member so as to be symmetrical at a substantially central portion in the horizontal direction of the stretching member in a state in which the respective front portions of the second component rods are stretched ;
The load jack part described above is
A jack portion having a reciprocating rod is provided, and the connecting portion between the tip portion of the first component rod and the base portion of the second component rod and the jack portion are swung so as to be substantially V-shaped. it comprises a connecting rod which rotatably in erection is not, loading the test apparatus of the structure, characterized in that the said structure via the booster mechanism by reciprocating Ru is imparted a displacement to the structure. A base portion of the first component rod is pivotally attached to the component surface of the structure supported by the support member, and the tip portion is positioned between the component surface and the tip portion of the first component rod to form a substantially letter shape. The base of the second configuration rod is pivotally attached to the front portion of the first configuration rod, and a pair of the pivot configuration of the first configuration and the structure of the second pivot is configured,
Stretching a stretch member along the component surface on the base of the structure or the support member on the support member side,
The symmetric configuration is made substantially symmetrical at the center in the horizontal direction of the stretching member in a state in which the front portions of the second configuration rods are stretched so that the second configuration rods face each other outward or inward. Pivot to the tension member ,
The connecting rod can be swung so that each of the connecting portion of the tip portion of the first component rod and the base portion of the second component rod and the jack portion having a reciprocating rod are substantially V-shaped. Crossover,
A structure loading test method, wherein displacement is applied to the structure by reciprocating the rod of the jack portion.

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