CN111058498A

CN111058498A - Horizontal static load test spherical hinge device

Info

Publication number: CN111058498A
Application number: CN202010078061.5A
Authority: CN
Inventors: 王婷
Original assignee: Tianjin Yingke Engineering Technology Co Ltd
Current assignee: Tianjin Yingke Engineering Technology Co Ltd
Priority date: 2020-02-02
Filing date: 2020-02-02
Publication date: 2020-04-24

Abstract

The invention discloses a spherical hinge device for a horizontal static load test, which overcomes the defects of a conventional horizontal jack in the horizontal static load test, and provides the spherical hinge device suitable for the horizontal static load test.

Description

Horizontal static load test spherical hinge device

Technical Field

The invention relates to the field of horizontal static load tests, in particular to a spherical hinge device for a horizontal static load test.

Background

The horizontal static load test is a test method for directly obtaining a horizontal limit bearing force value, and is also a test method which is recognized to be the most reliable and closest to the real condition at present. And important parameters such as pile body bending moment distribution, pile body deflection distribution, horizontal foundation reaction force coefficient and the like can be obtained through a sensor and the like embedded in the pile body during a horizontal static load test. The method provides a basis for construction process parameter selection, pile type selection and the like when a construction unit and a design unit design the pile foundation.

When the horizontal static load test is loaded, the tested component generates corresponding horizontal displacement. If the horizontal jack directly acts on the measured component, the measured component continuously displaces in the horizontal direction during loading, so that the included angle between the axes of the horizontal jack and the measured component cannot be kept constant, the included angle gradually changes, and the acting area is smaller and smaller. Due to the fact that the lower portion of the measured component is embedded and fixed, bending can occur in the horizontal load action process, and vertical displacement can be generated while horizontal displacement is generated. Because of the relation between the horizontal jack and the force of the measured component, the two components are tightly fixed together. The vertical displacement of the measured member inevitably causes the plunger of the head of the horizontal jack to generate certain vertical displacement along with the measured member. In the loading process of the horizontal jack, if effective measures cannot be taken for control, the situations of plunger damage of the horizontal jack, failure of horizontal load action and the like, even serious safety accidents occur very easily. Therefore, how to safely and stably apply the horizontal load to the measured component by the horizontal jack is a critical problem which needs to be solved at present.

Disclosure of Invention

The invention aims to overcome the defects of a conventional horizontal jack in a horizontal static load test, and provides a spherical hinge device suitable for the horizontal static load test.

In order to achieve the above object, the present invention provides the following technical solutions:

aiming at the characteristics of a horizontal static load test, the invention researches and develops a horizontal static load test spherical hinge device, and the test device mainly comprises three parts: the device comprises a jack plunger top disc modification part 2, a spherical hinge support 3 and a spherical hinge limiting base 4. As shown in fig. 2, 3 and 4. The horizontal jack plunger top disc modification piece 2 is used for modifying the top of a conventional horizontal jack plunger and mainly comprises a modification piece fixing screw rod 6, a modification piece transition base 7 and a modification piece ball head 8; the spherical hinge support 3 is used for contacting with the spherical surface of the circular disc modification piece 2 at the top of the horizontal jack plunger and mainly comprises an arc-shaped groove 9 of the spherical hinge support, a lifting ring 10 of the spherical hinge support and a base 11 of the spherical hinge support; one side of the spherical hinge limiting base 4 is used for limiting the spherical hinge base 3, and the other side of the spherical hinge limiting base is used for contacting with the tested member 5, the contact mode can be determined according to the shape of the tested member, and the contact surface 13 of the limiting base member can adopt contact modes such as an arc surface, a plane, a local arc surface and the like.

Drawings

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic structural view of a horizontal jack plunger top disk retrofit;

FIG. 3 is a schematic structural view of a spherical hinge support;

FIG. 4 is a schematic structural view of a spherical hinge limiting base;

fig. 5 is a schematic structural view of a conventional horizontal jack.

In the figure: 1. a horizontal jack; 2. a horizontal jack plunger top disc modification; 3. a spherical hinge support; 4. a spherical hinge limit base; 5. a measured member; 6. The modified part fixes the screw rod; 7. a retrofit transition mount; 8. transforming a ball head of the part; 9. the spherical hinge support is provided with an arc-shaped groove; 10. a spherical hinge support hoisting ring; 11. a spherical hinge support base plate; (ii) a 12. A limiting base limiting groove; 13. a limit base member contact surface 14, a horizontal jack disk fixing hole; 15. a horizontal jack plunger top disk.

Detailed Description

For a further understanding of the contents, features and effects of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings.

Referring to fig. 1 to 5, a horizontal static load test spherical hinge device includes a jack plunger top disc modification member 2, a spherical hinge support 3 and a spherical hinge limit base 4. The jack plunger top disc modification 2 comprises a modification fixing screw 6 matched with a horizontal jack disc fixing hole 10, the front end of the modification fixing screw 6 is a modification transition base 7, and the front end of the modification transition base 7 is a modification ball head 8. The spherical hinge support 3 comprises a spherical hinge support arc-shaped groove 9, a spherical hinge support bottom plate 11 is arranged at the front end of the spherical hinge support arc-shaped groove 9, and spherical hinge support hoisting rings 10 are arranged around the spherical hinge support bottom plate 11. The spherical hinge limiting base 4 comprises a limiting base limiting groove 12 and a limiting base component contact surface 13.

The jack plunger top disc modification piece 2 is not limited to the type of the example modification piece, and can also be directly customized in the manufacturing process of the horizontal jack 1 to form the type after the example modification.

The retainer base member contact surface 13 is not limited to the arcuate pattern of the example, and the retainer base member contact surface 13 may be arcuate, flat, or otherwise configured depending on the pattern of the measured member 5.

The horizontal static load test spherical hinge device can realize effective connection of the horizontal jack and a tested member, and the horizontal jack can continuously adjust the contact point and the included angle according to the vertical displacement and the horizontal displacement of the tested member to safely and stably apply the horizontal load to the tested member, so that the stability of the horizontal static load test device is improved, and the safety of test work is ensured. Therefore, the invention has good market application prospect.

The method comprises the following steps:

as shown in fig. 1, when performing a horizontal static load test, because the top of the plunger of a conventional horizontal jack 1 is generally a plane, the top disk 15 of the plunger of the horizontal jack can be removed first, the top disk modifying piece 2 of the plunger of the horizontal jack matched with the horizontal jack 1 is installed, or the horizontal jack 1 can be directly customized into a modified form of the cost example. The ball pivot limit base 4 is installed at the test position of the tested member 5, and the limit base member contact surface 13 is not limited to the arc surface type of the example and can be determined according to the type of the tested member 5. The spherical hinge support 3 is placed in the limiting groove 12 of the limiting base, the spherical hinge support is limited and fixed to a certain extent by the aid of the spherical hinge support lifting rings 10, the spherical hinge support 3 is basically located in the center of the limiting groove 12 of the limiting base, and displacement capable of moving up and down is reserved. The load of the horizontal jack 1 can be safely and stably applied to the tested member through the horizontal static load test spherical hinge device.

The invention can be used for horizontal static load tests and can also be used for horizontal static load tests of other similar components.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A spherical hinge device for a horizontal static load test comprises a jack plunger top disc modification piece, a spherical hinge support and a spherical hinge limiting base.

2. The modified part of the jack plunger top disc as claimed in claim 1, wherein a conventional horizontal jack can be modified, the modified part of the jack plunger top disc is directly mounted on the head of the conventional horizontal jack by using a modified fixing screw after the conventional horizontal jack plunger top disc is removed, and the modified head of the horizontal jack is a convex spherical surface.

3. The spherical hinge support part according to claim 1, wherein the arc-shaped groove of the spherical hinge support is a concave spherical surface, and is matched with a convex spherical surface of the head of the modified horizontal jack, and the bottom plate of the spherical hinge support is a plane.

4. The spherical hinge limiting base part according to claim 1, wherein the limiting base limiting groove is provided with a baffle around, a spherical hinge support base plate can be limited in the limiting base limiting groove, the spherical hinge support is vertically and flexibly fixed by utilizing a spherical hinge support lifting ring, the spherical hinge support base plate can move in the limiting base limiting groove, the load action part of the measured component can be a plane, an arc surface or other types, and the contact surface of the limiting base component can be customized according to the type of the load action part of the measured component.