Multi-span beam structure experimental model and experimental method

An experimental model and cross-beam technology, applied in statically indeterminate and hyperstatically indeterminate multi-span beam structure experimental devices, and in the field of structural mechanics experiments, can solve problems related to theoretical doubts and insufficient understanding of related theories, and achieve accurate measurement results and structural The effect of simple and accurate understanding

Active Publication Date: 2017-01-25
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the teaching methods of structural mechanics in colleges and universities are mainly theoretical teaching, and the lack of experimental verification of relevant mechanical principles has led to some students not having a deep understanding of relevant theories, and even questioning relevant theories

Method used

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  • Multi-span beam structure experimental model and experimental method
  • Multi-span beam structure experimental model and experimental method
  • Multi-span beam structure experimental model and experimental method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Example 1: Statically determined multi-span beam internal force influence line by static method and motor method

[0106] Image 6 Diagram of the experimental setup for the original structure of the statically determinate multi-span beam internal force influence line for the static method.

[0107] The statically determinate multi-span beam structure is composed of rectangular sheet rods 1a, 1b and bolts 2b. One end of the rectangular sheet rod 1a is connected to the rectangular sheet rod 1b through a bolt 2b, the other end is connected to the fixed hinge support through a pin 2a, and the middle part is connected to the movable hinge support through a pin 2a; one end of the rectangular sheet rod 1b passes through The bolt 2b is connected with the rectangular sheet bar 1a, and the other end is connected with the movable hinge support through the pin bolt 2a, so as to realize the connection between the statically determinate multi-span beam structure and the support.

...

Embodiment 2

[0114] Example 2: Internal Force Influence Lines of Statically Determinate Multi-span Beams under Node Bearing Mode

[0115] Figure 8 It is the experimental setup diagram of the internal force influence line of the statically determinate multi-span beam under the joint load mode.

[0116] The statically determinate multi-span beam structure is composed of rectangular sheet rods 1a, 1b and bolts 2b. One end of the rectangular sheet rod 1a is connected to the rectangular sheet rod 1b through a bolt 2b, the other end is connected to the fixed hinge support through a pin 2a, and the middle part is connected to the movable hinge support through a pin 2a; one end of the rectangular sheet rod 1b passes through The bolt 2b is connected with the rectangular sheet bar 1a, and the other end is connected with the movable hinge support through the pin bolt 2a, so as to realize the connection between the statically determinate multi-span beam structure and the support.

[0117] The elect...

Embodiment 3

[0120] Example 3: Static method and dynamic method for the influence line of internal force of statically indeterminate multi-span beam

[0121] Figure 9 Diagram of the experimental setup for the original structure of the statically indeterminate multi-span beam internal force influence line for the static method.

[0122] The statically indeterminate multi-span beam structure is composed of rectangular sheet rods 1c, 1b and bolts 2b. One end of the rectangular sheet rod 1c is connected to the rectangular sheet rod 1b through a bolt 2b to realize the hinged connection of the two rods, and the other end is clamped by the T-shaped stopper 2c-1 and the rectangular stopper 2c-2 to connect with the fixed support 3a to realize the fixed end , the two parts in the middle of the rectangular sheet rod 1c are connected to the movable hinge support through the pin bolt 2a to realize hinge connection; one end of the rectangular sheet rod member 1b is connected to the rectangular sheet r...

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Abstract

The invention provides a multi-span beam structure experimental model and a multi-span beam structure experimental method. The multi-span beam structure experimental model comprises a multi-span structure, an electric servo loading device, a turning-angle restraining and loading device, supporting and restraining device and measuring equipment; the multi-span beam structure is divided into two basic structures of the statically determinate structure and statically indeterminate structure which are formed by being connected through rod pieces and bolt pins; the electric servo loading device is provided with two structures, and both the structures operating with a control system have two loading modes of displacement-control load and load-control load; the turning-angle restraining and loading device comprises a screw lift, a torque sensor, a follow-up disc and a connecting piece; the supporting and restraining device comprises a counterforce frame and a restraining bearing with the multi-span beam structure; the measuring equipment comprises a force sensor, a strain gauge, an angle sensor and a dial indicator. The a multi-span beam structure experimental model is simple in structure, reusable, accurate in measurement result and capable of realizing experiments of teaching contents of structural mechanics influence line, moment distribution method and the like.

Description

technical field [0001] The invention belongs to the teaching practice field of experimental structural mechanics of civil engineering specialty, and relates to a statically indeterminate and hyperstatically indeterminate multi-span beam structure experiment device and a structural mechanics experiment carried out using the device. [0002] technical background [0003] Structural mechanics is a compulsory subject for civil engineering majors in colleges and universities. The main research objects are beams, arches, trusses, rigid frames and other member structures. According to the principles of mechanics, it studies the internal force and deformation of structures under the action of external forces and other external factors. Strength, stiffness, stability and dynamic response, as well as the composition law and mechanical performance of the structure. [0004] At present, the teaching methods of structural mechanics in colleges and universities are mainly theoretical teach...

Claims

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Application Information

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IPC IPC(8): G01M5/00
CPCG01M5/005
Inventor 陈廷国李映雪胡乔元任珵娇谢鹏勾国勇
Owner DALIAN UNIV OF TECH
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