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Speed type structure connecting and locking device containing shear thickening liquid

A technology of structural connection and locking device, which is applied in the fields of civil engineering and aerospace engineering. It can solve the problems of complex design process and construction process, occupying space for the structure, and high cost, and achieve convenient vibration reduction control, uniform force, and low material cost. low effect

Inactive Publication Date: 2012-07-11
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of structural vibration control is that it has rich forms and obvious effects. The current shortcomings are that the design process and construction process are complicated, occupying the use space of the structure, and the cost is relatively high.

Method used

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  • Speed type structure connecting and locking device containing shear thickening liquid
  • Speed type structure connecting and locking device containing shear thickening liquid
  • Speed type structure connecting and locking device containing shear thickening liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1-3 As shown, for the traditional continuous girder bridge, in order to ensure that the main girder 9 of the bridge can freely expand and contract due to temperature changes during normal use, the main girder 9 of the bridge is generally rigidly connected to one of the piers, and sliding bearings are set on the other piers to form Articulated way. However, under the action of an earthquake or the impact of a vehicle, energy tends to concentrate on the pier just connected to the main girder, resulting in local stress concentration and damage. Install the speed-type structural connection locking device containing shear thickening fluid near multiple sliding bearings 10 of the bridge, and connect it with the bridge pier 11 and the bridge girder 9 . The connection locking device basically does not constrain the slow movement caused by temperature, shrinkage and creep in the bridge structure, that is, it does not affect the normal use function of the structu...

Embodiment 2

[0031] Such as Figure 4 As shown, for some building structures with relatively large planar dimensions, in order to prevent the structure from cracking or being damaged due to changes in climate and temperature, it is often necessary to arrange vertical expansion joints 12 at appropriate locations along the length of the structure. Under the action of an earthquake, the structural parts 13 and 14 on both sides of the expansion joint 12 are likely to collide and cause local damage to the structure, which will lead to structural failure in severe cases. A plurality of speed-type structural connection and locking devices containing shear thickening fluid are evenly installed between the expansion joints 12 of the structure, and the two ends of the connection and locking devices are respectively connected to the structures 13 and 14 on both sides of the expansion joint 12 . The joint locking device does not restrain the normal shrinkage and creep of the structure due to temperatu...

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Abstract

The invention relates to a speed type structure connecting and locking device containing shear thickening liquid, and belongs to the technical fields of civil engineering and aerospace engineering. The device comprises the shear thickening liquid, a steel cylinder, piston rods, a piston end, internal seals, a sealing baffle plate and a connecting end. The connecting end is connected with a structure; under the action of environmental change or common load and the like, the connecting and locking device and the structure move slowly at the same time; and when the connecting form of the structure is unchanged, the speed of the structure is obviously increased under the action of power, the shear thickening liquid in the connecting and locking device is sharply changed from liquid phase to solid phase, the device plays a role of a rigid connecting rod, and the connecting form of the structure is changed from hinging to rigid connection, so that the transfer path of the load is changed, the displacement and the deformation of the structure are limited, and the structure is protected.

Description

technical field [0001] The invention relates to a speed-type structural connection locking device containing a shear thickening fluid, which belongs to the technical fields of civil engineering and aerospace engineering. Background technique [0002] In traditional engineering structures represented by buildings and bridges, the connection form of the structure and its components is fixed. The common forms include rigid joints (which can transmit axial force, shear force, bending moment and torque, etc.), hinge joints ( It can only transmit axial force and shear force, but cannot transmit bending moment) and semi-rigid connection (between the former two), etc. In the normal use stage, the connection form of the structure is the basic guarantee to ensure the load transfer function of the structure. In earthquakes, hurricanes and other irresistible natural disasters and emergencies, structural components consume energy input from the external environment, and will also genera...

Claims

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Application Information

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IPC IPC(8): E01D19/00E04B1/98F16F9/28
Inventor 何浩祥李晓飞葛腾飞闫维明
Owner BEIJING UNIV OF TECH
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