Anti-pulling test device for anchor rod
A test device and technology of bolts, which are applied in the test of basic structures, sheet pile walls, buildings, etc., can solve the problems affecting the overall bearing performance of rock bolts, damage to the basic structure of rock bolts, and lack of stable power supply. The effect of light weight, easy transportation, and avoidance of damage
Inactive Publication Date: 2018-12-18
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology
Cutting off the bent part on the top of the anchoring steel bar, although the pullout test of the rock bolt foundation has been realized, it has caused damage to the structure of the rock bolt foundation and affected the overall bearing capacity of the rock bolt
In addition, because rock bolt foundations are generally located in high mountains, there is no stable power supply on site, and the welding quality is difficult to guarantee
Method used
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[0106] After the installation of the device is completed, when the core-piercing jack 3 gives an upward force to the pressure-bearing part 6, the pressure-bearing part 6 will have an upward displacement, and the fixed anchor 8 is anchored on the anchor rod 9 above the pressure-bearing part 6, which limits the With the displacement of the pressure piece 6, the pressure bearing piece 6 transmits the force to the anchor rod 9 through the anchorage 8, so as to achieve the effect of applying pull-out force to the anchor rod 9.
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Abstract
The invention discloses an anti-pulling test device for an anchor rod. The anti-pulling test device comprises an anchorage device, a pressure sensor, a pressure bearing member and a supporting jackingassembly. The anchorage device, the pressure sensor and the pressure bearing member are disposed in the same axis with the anchor rod, and the anchorage device is anchored on the anchor rod. One endof the pressure bearing member is connected to the supporting jacking assembly, and the other end of the pressure bearing member is connected to the anchorage device. The pressure sensor is disposed between the anchorage device and the pressure bearing member. The supporting jacking assembly includes at least two jacking members, and the supporting jacking assembly is used for jacking up the pressure bearing member to be displaced upwards to drive the anchor rod to move upwards. The anti-pulling test device utilizes a lever principle to realize an anti-pulling test of a foundation of a rock anchor rod of transmission line engineering, avoids the damage to a rock anchor rod body during the anti-pulling test of the anchor rod, and has the characteristics of small size, light weight, convenient transportation and the like.
Description
technical field [0001] The invention relates to the field of quality detection of power transmission line foundation engineering, in particular to a pullout test device for anchor rods. Background technique [0002] The rock bolt foundation is suitable for hard rock formations with good integrity above moderate weathering. The foundation type is to fix the anchoring steel bar in the pre-excavated rock hole, and then penetrate into the cement mortar to make the anchoring steel bar and the rock tightly bonded. Force to resist the external force from the upper tower structure. The rock bolt foundation makes full use of the strength of the rock, and has the advantages of less material consumption, high degree of mechanization, and less damage to the natural environment. [0003] According to the relevant requirements of "Code for Quality Acceptance of Building Foundation Engineering" (GB50202-2002) and "Code for Design of Building Foundation" (GB50007-2011), rock bolt foundati...
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IPC IPC(8): E02D33/00E02D5/74C22C38/22C22C38/38C22C38/24C22C38/02
CPCC22C38/02C22C38/22C22C38/24C22C38/38E02D5/74E02D33/00E02D2300/0029
Inventor 王帅王宝齐刘华清刘佳龙陈泳潭
Owner CHINA ELECTRIC POWER RES INST
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