A vertical load loading device for civil engineering field test
A vertical load and on-site test technology, applied in the direction of measuring devices, foundation structure engineering, foundation structure tests, etc., can solve the problems of long cycle, large investment, and failure to fully reflect the real working characteristics of the foundation
Active Publication Date: 2021-04-23
SOUTHEAST UNIV
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Problems solved by technology
Therefore, the currently used field test method has certain limitations and cannot fully reflect the real working behavior of the foundation and structure under complex loads.
The construction of the load-loading device used for field tests is difficult, requires a lot of investment, and has a long cycle, which limits the relevant field tests.
In addition, the foundation and structure will produce horizontal displacement under horizontal load. The current field test vertical load loading device rarely considers the requirement of stable loading when the foundation and structure undergo horizontal displacement.
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[0023] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.
[0024] In the present invention, the bored pile foundation 1 should be accurately positioned before the pile hole is excavated to ensure that its relative position with the test model is accurate. The bored pile foundation 1 should be designed according to the vertical load required by the field test. The distance between the pile foundation centers should be greater than 2.5 ...
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The invention discloses a vertical load loading device for civil engineering field test, comprising a test model, a bored pile foundation, a reserved hole, a steel backing plate, a threaded steel, a force transmission beam, a hinged connecting piece, Threaded steel 2. Main reaction force beam, hollow jack, load sensor, tilt angle sensor; the device of the present invention takes the foundation of the bored pile as the reaction force component, connects the pile foundation and the upper device through high-strength finishing threaded steel, and uses the hollow jack The reverse thrust main reaction beam applies the load to the test model. The invention can meet the vertical load loading requirements of the civil engineering field test, and uses the fine-rolled threaded steel connection to speed up the construction speed of the loading device and reduce the difficulty of construction on site. The device can flexibly adjust the installation height of the main reaction beam to meet the test requirements of different models. In addition, the device of the present invention can stably apply a vertical load when the test model is displaced by a horizontal load.
Description
technical field [0001] The invention belongs to the technical field of load test loading, and in particular relates to a vertical load loading device for field tests of civil engineering. Background technique [0002] Soil-foundation-structure interaction is a major research topic in civil engineering, which has attracted extensive attention and research at home and abroad for decades. The design and calculation of structures such as traditional buildings and bridges is based on the assumption of a rigid foundation, and the soil, foundation, and structure are regarded as discrete independent units for static force balance analysis and calculation. However, for the design of large complex structures, it is unreasonable to continue to use the traditional rigid foundation assumption. Research results in recent years have confirmed that soil, foundation, and structure are interconnected and affect each other, and coupling analysis should be carried out as a whole. Soil-foundat...
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IPC IPC(8): G01N3/00E02D33/00
CPCE02D33/00
Inventor 程钊斯瓦林格木.斯里萨兰王景全李帅
Owner SOUTHEAST UNIV