Device and method for testing anchoring force of FRP connecting piece of fabricated composite wall body
A technology for testing devices and connectors, applied in measuring devices, testing of mechanical components, testing of machine/structural components, etc., can solve the problems of time-consuming and laborious, difficult to implement, and large amount of materials, and achieve convenient use, simple structure, good effect
Pending Publication Date: 2020-08-04
JIANGSU RES INST OF BUILDING SCI +1
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Problems solved by technology
However, in addition to FRP connectors with circular cross-sections, there are FRP connectors with cross-shaped or flat-shaped cross-sections, which are difficult to be anchored by mechanical clamping with conventional pull-out test devices
At present, the existing detection devices and methods for FRP connectors (such as "Fiber Reinforced Plastic Connectors for Prefabricated Insulation Walls" JG / T561-2019) are relatively complicated and difficult to implement. The production of test pieces requires a large amount of materials, which is time-consuming and laborious
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[0041] In order to ensure the use effect, the sleeve is a plastic hollow tube with an outer diameter of 90mm and an inner diameter of 82mm. The connecting filler has a compressive strength of 90N / mm 2 The sleeve grouting material for steel bar connection is made of cement as the basic material, fine aggregate, concrete admixture and other materials are mixed with water and then formed. The casing and the formed connection filler are combined into a cylinder with a diameter of 90mm and a height of 180mm.
[0042] The tension rod is a HRB400 hot-rolled ribbed steel bar with a diameter of 16 mm and a length of 500 mm. The tension rod forms an anchor connection with the connection filler through bonding and is located on the same axis as the FRP connector. The anchor length is 90 mm.
[0043] The reinforcement bar is a HRB400 hot-rolled ribbed steel bar with a diameter of 6 mm. The reinforcing ribs are evenly distributed in the connecting filler to form a rectangular reinforcing...
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The invention discloses a device and a method for testing anchoring force of an FRP connecting piece of a fabricated composite wall body. The testing device comprises a connecting assembly and a loading assembly. The connecting assembly comprises a sleeve and a tension rod; and the loading assembly comprises a reaction frame, an oil pump and a lock. The sleeve is a hollow circular pipe and is filled with connecting fillers; the sleeve is arranged in the reaction frame; the bottom of the reaction frame and the bottom of the sleeve are located on the same horizontal plane, and the reaction frameand the sleeve are both arranged on a concrete test block with the pre-buried FRP connecting piece; the bottom of the tension rod penetrates through the top of the sleeve, is arranged in the connecting fillers and is coaxial with the connecting piece; and the reaction frame, the oil pump and the lock are sequentially penetrated by the tension rod and are installed together. The device is simple and reasonable in structure, low in cost, good in effect and convenient to use, anchoring force of various types of FRP connecting pieces in concrete can be effectively and accurately tested, and a reliable basis is provided for design, construction, detection and acceptance of a fabricated concrete structure engineering combined wall.
Description
technical field [0001] The invention belongs to the technical field of detection of prefabricated concrete structures, and in particular relates to a test device and a test method for detecting the anchoring force of FRP connectors of a prefabricated composite wall in concrete. Background technique [0002] With the advancement of national and local policies, the proportion of prefabricated buildings in various cities in our province has continued to increase, and more and more projects have adopted prefabricated buildings. At the same time, the sustainable development strategy has made the country put forward higher requirements on energy consumption in the construction industry, and more attention has been paid to energy conservation and emission reduction. Among them, the prefabricated thermal insulation and decorative composite wall has been widely used in prefabricated concrete structural engineering in recent years because of its excellent energy-saving performance, ea...
Claims
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Login to View More IPC IPC(8): G01N3/12G01N19/04G01M13/00G01L5/00E04C5/12
CPCE04C5/12G01L5/0033G01M13/00G01N3/12G01N19/04G01N2203/0048G01N2203/0676
Inventor 蒋俣孙正华魏晓斌汪晟刘蓉
Owner JIANGSU RES INST OF BUILDING SCI