CN207923611U - A kind of novel structural elements and shield duct piece experimental provision - Google Patents

Abstract

The utility model belongs to the technical field of concrete member detection and discloses a novel structural member and shield segment experimental device, which is provided with a laboratory base; a vertical reaction force frame is fixed above the laboratory base through anchor bolts; A horizontal longitudinal self-reflection frame and a horizontal horizontal self-reflection frame are bolted to the inner side of the reaction frame; the bottom of the horizontal longitudinal self-reflection frame is fixed with an automatic lifting device by bolts. The horizontal two-way loading device in the utility model can realize the self-constraint of the forces in two directions during horizontal loading, and form a self-reflexive force system. When carrying out actual tests, it can be separated from the vertical loading device without disabling its own internal loading force. It is transmitted to the vertical frame to ensure the authenticity of the test data. Through the mutual cooperation of the horizontal jacking device and the horizontal removal device, it is very convenient to move the large and heavy structural components to the open area for disassembly, thus saving More manpower and material resources.

Description

A New Type of Structural Components and Shield Segment Experimental Device

technical field

The utility model belongs to the technical field of concrete member detection, in particular to a novel structural member and shield segment experimental device.

Background technique

At present, the existing technologies commonly used in the industry are as follows:

At present, most of the loading devices used in domestic concrete structure full-scale components and joints, as well as the stiffness and strength tests of shield tunnel segments and joints, use steel frame structures. Among them, most of the vertical loading devices adopt welded steel beam splicing or steel column connection self-supporting reaction force, one side of the horizontal direction provides longitudinal and horizontal self-reaction force in the form of four tie rods, and the other side uses the side beam in the vertical reaction force frame structure To provide horizontal lateral reaction force. This kind of full-scale test usually has a large size, with a width of about 4 meters, a length of more than ten meters, and a height of about 4 meters. Such large-sized test pieces often require a relatively large test force, usually hundreds of tons to thousands of tons. Therefore, the structural loading frame designed in this way also occupies a very large area, and the load force in the horizontal direction and the vertical load force of this structure will affect each other. Before the test, the test personnel need to remove all the three-dimensional frames. After the test pieces are placed, they will install the removed parts one by one. After the test is completed, when the test pieces need to be removed, the three-dimensional frames must be removed before the test pieces . The installation and removal of large-scale structural steel frames requires a lot of manpower, material resources and time, and at the same time, it will also face relatively large safety risks during installation and removal. In addition, due to the large size of the test piece, the weight of a single piece is relatively heavy, which can reach dozens of tons. Therefore, the tonnage of the crane equipped in the general laboratory cannot meet this requirement. However, the laboratory space is limited, and the truck crane is used for hoisting. It is too restricted, so it is very difficult to complete experiments with such a large specimen in the laboratory.

In summary, the problems in the prior art are:

The existing full-scale components and joints of concrete structures, as well as the rigidity and strength test devices of shield tunnel segments and joints occupy a large space and are difficult to install and dismantle, which cannot solve the problem of installation and dismantling of large test pieces. Forces and vertical load forces can cause interference problems affecting the accuracy of test forces.

The difficulty and significance of solving the above technical problems:

The difficulty in solving the above problems lies in how to reduce the size of the three-dimensional frame in a limited space, how to solve the installation and removal of large specimens, and how to solve the independent and non-interfering forces in the three directions of horizontal and vertical directions. question. After these problems are solved, this type of test can be completed in an indoor laboratory with limited space, which greatly improves the effective utilization rate of test equipment and test accuracy, and greatly saves the working time of experimenters.

Contents of the invention

Aiming at the problems existing in the prior art, the utility model provides a new experimental device for full-scale structural members and shield segments, which is applied to reinforced concrete structural members (such as beams, plates, columns, nodes) and joints, shield segments, etc. Rigidity and strength tests of shield tunnel segments and joints, and pull-out tests of steel plates pasted on the inner surface of shield tunnel segments (testing the bond strength between steel plates and the inner surface of segments).

The utility model is achieved in that a new type of structural member and shield segment experimental device is provided with a laboratory base;

A vertical reaction frame is fixed above the laboratory base by anchor bolts;

The vertical reaction frame consists of four vertical beams, two auxiliary beams and one main beam. The lower end of the main beam is bolted with a vertical loading cylinder to realize vertical loading on the specimen;

The inner side of the vertical reaction frame is bolted with a horizontal longitudinal self-reaction frame and a horizontal horizontal self-reaction frame;

The horizontal horizontal reflexive force frame is connected to both sides of the horizontal longitudinal reflexive force frame by high-strength bolts. The connection bolts form a self-reflexive force, and the lateral loading frame is built into the longitudinal loading frame. The length and width of the horizontal, vertical and horizontal directions can be adjusted freely;

The bottom of the horizontal longitudinal self-reflective force frame is fixed with an automatic lifting device by bolts, which can adjust and control the height of the horizontal transverse self-reflective force frame and the specimen;

The reaction baffle of the automatic entry and exit device is fixed above the laboratory base through anchor bolts; the automatic entry and exit cylinder device is built in the horizontal longitudinal self-reflexive force frame, and the automatic entry and exit device oil cylinder is connected with a connecting rod for moving out of the horizontal longitudinal self-reflexive force frame and take back.

Further, one end of the horizontal longitudinal self-reflective force frame is bolted to a plurality of horizontal longitudinal loading oil cylinders; one end of the horizontal transverse self-reflective force frame is bolted to a plurality of horizontal transverse loading oil cylinders.

Further, the automatic lifting device is built in the bottom of the horizontal longitudinal self-reflexive force frame, and the automatic lifting device includes four lifting cylinders, which are connected to the sliding wheels through hinged joints.

In summary, the advantages and positive effects of the present utility model are:

The components of the horizontal longitudinal self-reflective force frame are connected by high-strength bolts, and the components of the horizontal transverse self-reflective force frame are connected by high-strength bolts. The self-constraint of forces in two directions during loading forms a reflexive force system. This self-reflexive force system can be separated from the vertical loading device during the actual test, and will not transmit its own internal loading force to the vertical frame, thereby ensuring the authenticity of the test data.

The automatic lifting device is fixed on the bottom of the horizontal longitudinal self-reflexive force frame by bolts. The structure is compact and beautiful, and it perfectly solves the problem of dismantling and hoisting the full-scale test piece in a limited space. Through the mutual cooperation of the horizontal jacking device and the horizontal removal device , can easily move large and heavy structural components to an open area for disassembly, thus saving more manpower and material resources.

The reaction force baffle of the automatic entry and exit device cooperates with the automatic entry and exit device and the connecting rod, which perfectly solves the problem of moving out and retracting the horizontal longitudinal self-reflection frame. Move to any desired location. Through the mutual cooperation of the horizontal jacking device and the horizontal removal device, large and heavy structural components can be easily removed to an open area for disassembly, thereby saving more manpower and material resources.

The horizontal vertical self-reflection frame and the horizontal horizontal self-reflection frame are separated from the vertical reaction frame, which effectively solves the problem of mutual interference between the vertical load force and the horizontal load force, and ensures the accuracy of the test force.

Description of drawings

Fig. 1 is the structural representation of the novel structural member and the shield segment experimental device provided by the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the new structural member and the automatic lifting device of the shield segment experimental device provided by the embodiment of the utility model;

In the figure: 1. Laboratory base; 2. Vertical reaction force frame; 3. Horizontal and longitudinal self-reflexive force frame; 4. Horizontal and transverse self-reflexive force frame; 5. Vertical loading cylinder; 6. Horizontal and transverse loading cylinder; 7. Horizontal and longitudinal loading oil cylinder 8. Automatic lifting device; 9. Reaction baffle of automatic entry and exit device; 10. Oil cylinder of automatic entry and exit device.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are given below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, the new structural member and shield segment experimental device provided by the embodiment of the utility model include: laboratory base 1, vertical reaction force frame 2, horizontal longitudinal self-reflexion force frame 3, Horizontal horizontal reflexive force frame 4, vertical loading oil cylinder 5, horizontal horizontal loading oil cylinder 6, horizontal longitudinal loading oil cylinder 7, automatic lifting device 8, automatic entry and exit device reaction force baffle 9, automatic entry and exit device cylinder 10.

A vertical reaction force frame 2 is fixed above the laboratory base 1 through anchor bolts; a vertical loading cylinder 5 is bolted to the lower side of the upper end of the vertical reaction force frame 2; Force frame 3 and horizontal horizontal reflexive force frame 4; one end of horizontal longitudinal reflexive force frame 3 is bolted with multiple horizontal longitudinal loading cylinders 7; one end of horizontal horizontal reflexive force frame 4 is bolted with multiple horizontal horizontal loading cylinders 6; The horizontal horizontal reflexive force frame 4 is connected to both sides of the horizontal longitudinal reflexive force frame 3 through high-strength bolts; the bottom of the horizontal longitudinal reflexive force frame 3 is fixed with an automatic lifting device 8 by bolts; The anchor bolt is fixed with an automatic entry and exit device reaction force baffle 9; the horizontal longitudinal self-reflexive force frame 3 is built with an automatic entry and exit device oil cylinder 10.

As a preferred embodiment, the vertical reaction force frame 2 is connected to the foundation anchor hole through the base 1 at the lower end of each column, and each base 1 is designed with 8 installation holes, the hole distance is 500mm, and a total of 32 anchor holes The joints bear a maximum vertical load of 1000T.

The utility model is a vertical reaction force structure formed by using anchor holes in the foundation. The components of the horizontal and longitudinal self-reflection frame are connected by high-strength bolts, and the components of the horizontal and transverse self-reflexion frame are connected by high-strength bolts, which can realize horizontal and longitudinal The length and width of the horizontal and lateral directions can be adjusted freely, and at the same time, the self-constraint of the forces in the two directions can be realized when the horizontal load is applied, forming a self-reflexive force system. This self-reflexive force system can be separated from the vertical loading device during the actual test, and will not transmit its own internal loading force to the vertical frame, thereby ensuring the authenticity of the test data.

The automatic lifting device is fixed on the bottom of the horizontal longitudinal self-reflexive force frame by bolts. The structure is compact and beautiful, and it perfectly solves the problem of dismantling and hoisting the full-scale test piece in a limited space. Through the mutual cooperation of the horizontal jacking device and the horizontal removal device , can easily move large and heavy structural components to an open area for disassembly, thus saving more manpower and material resources.

The reaction force baffle of the automatic entry and exit device cooperates with the automatic entry and exit device and the connecting rod, which perfectly solves the problem of moving out and retracting the horizontal horizontal self-reflective force frame. Move to any desired location. Through the mutual cooperation of the horizontal jacking device and the horizontal removal device, large and heavy structural components can be easily removed to an open area for disassembly, thereby saving more manpower and material resources.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modifications made to the above embodiments according to the technical essence of the present utility model are equivalent to changes and modifications. All belong to the scope of the technical solution of the utility model.

Claims (3)

1. A novel structural member and shield tunneling segment experimental device, characterized in that, said novel structural member and shield tunneling segment experimental device are provided with a laboratory base; A vertical reaction frame is fixed above the laboratory base by anchor bolts; The vertical reaction frame is equipped with four vertical beams, two auxiliary beams and a main beam, and the lower end of the main beam is bolted with a vertical loading cylinder; The inner side of the vertical reaction frame is bolted with a horizontal longitudinal self-reaction frame and a horizontal horizontal self-reaction frame; The horizontal horizontal self-reflection frame is connected to both sides of the horizontal longitudinal self-reflection frame by high-strength bolts; The bottom of the horizontal and longitudinal self-reflection frame is fixed with an automatic lifting device by bolts; The reaction baffle of the automatic entry and exit device is fixed above the laboratory base through anchor bolts. The horizontal and vertical self-reflexive frame is equipped with an automatic entry and exit cylinder device, and the cylinder of the automatic entry and exit device is connected with a connecting rod. 2. novel structural member and shield segment experimental device as claimed in claim 1, it is characterized in that, one end of the horizontal longitudinal self-reflective force frame is bolted with a plurality of horizontal longitudinal loading oil cylinders; one end of the horizontal horizontal self-reflective force frame is bolted There are multiple horizontal lateral loading cylinders. 3. The novel structural member and shield segment experimental device as claimed in claim 1, wherein the automatic lifting device is built into the bottom of the horizontal and vertical self-reflexive force frame, and is provided with a plurality of jacking cylinders, which are bolted to Has sliding wheels.