Wallboard Joint Seismic Test Device
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Solution Overview
Problem
Existing pseudo-static test devices for seismic behavior of wallboard connection joints fail to accurately evaluate the seismic behavior of the connection joints between the wallboard and the frame, as they primarily focus on the whole frame system rather than the joints themselves.
Innovation Solution
A pseudo-static test device comprising ground anchor holes, a support frame with a steel beam and columns, and a test wallboard, where the support frame forms a four-point hinged or rigid connection structure to isolate the force application, allowing direct transfer of horizontal forces to the connection joints for accurate evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a steel-frame loading device is used to apply loads to the wallboard through the frame, then the whole frame system can be tested, but the seismic behavior of the connection joints cannot be accurately evaluated
Solution Approach 1:
The test device segments the wallboard system into the connection joint component and the frame system. By using a support frame that is hinged at the bottom to ground anchors, the frame is isolated from bearing test loads, allowing the connection joint to be tested independently without the interference of frame structural response.
Solution Approach 2:
The connection joint is extracted as the isolated test object. The support frame is designed to transfer loads directly to ground anchors without involving the frame's structural behavior, effectively taking out the connection joint from the whole frame system for dedicated testing.
2Measurement precision
If the frame and wallboard are together subjected to load, then the whole frame system seismic behavior can be studied, but the connection joint behavior is obscured
Solution Approach 1:
The testing system is segmented into independent functional components: the support frame for load application, the connection joint as the test specimen, and the ground anchors for load transfer. This segmentation allows the connection joint behavior to be measured precisely without being obscured by frame response.
3Measurement precision
If conventional test devices are used, then the test setup is simple, but the seismic response of connection joints cannot be isolated and evaluated
Solution Approach 1:
The support frame acts as an intermediary that transfers loads from the actuator directly to the ground anchors through hinged connections, without involving the frame's structural behavior. This intermediary structure enables precise isolation and evaluation of connection joint seismic response.
Data Source
AI summary
A pseudo-static test device and method for seismic behavior of connection joints of a wallboard. The device includes ground anchor holes, a support frame including a steel beam and two steel columns, and a test wallboard. A bottom plate of the steel beam is provided with at least two first connecting holes. A top plate each steel column is provided with a second connecting hole. A bottom plate of each steel column is provided with a third connecting hole. The bottom plate of the steel beam is provided with a connection joint assembly configured to hingedly or rigidly connect a top of the test wallboard to the steel beam. Each first connecting hole is connected to the second connecting hole through a flange assembly.