The Third Scientific Research Institute of the Corps of Engineers

Luoyang, China

The Third Scientific Research Institute of the Corps of Engineers

Luoyang, China
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Xia Y.-Y.,Wuhan University of Technology | Chen Z.-S.,Wuhan University of Technology | Chen Z.-S.,Guangdong Road and Bridge Construction Development Co. | Gu J.-C.,Wuhan University of Technology | And 3 more authors.
Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology | Year: 2010

It is of significance that researching deformation behaviour and pattern of destruction of pressure-dispersive prestressed anchorage cable stressed in various kinds of rock for anchoring mechanism and effect of those cables. Based on the reforcing works of Guang-He highway slope engineering, with similitude principle and method of testing strain adopted, we have carried out full size model indoor test to make a comparison of pressure-dispersive anchorage cable effected in 3 kind of rock having different intensity in this paper. The distribution characteristics of axial strain of grouting body as well as law of distribution of shear stress between grouting body and wall of hole are deduced. And then we analyze features and patterns of cable damaged, and phenomenon of compression stress concentration of grouting body around bearing structure and so on. Through check of shear stress by theoretical calculation, it is successful and credible of the test having applied measuring and testing technique and programme of shear stress.


Wang G.,Henan Polytechnic University | Gu J.,The Third Scientific Research Institute of the Corps of Engineers | Chen A.,The Third Scientific Research Institute of the Corps of Engineers | Xu J.,The Third Scientific Research Institute of the Corps of Engineers
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | Year: 2012

Based on anti-explosion model test, the failure forms and failure mechanism of the anchor bolts are studied. According to the results of the model tests, anchor bolts under top explosion have four kinds of failure forms, which include compression bending failure, shearing failure, compression bending and tensile failure with shedding of screw cap, and turnover of backing plate. Because the pressure stress is disturbed unevenly under top explosion, which leads to product a few shearing cracks in two sides of arch foot, the four kinds of failure forms are produced. In accordance with failure forms of anchor bolts, technologies with enhancing the explosion resisting capacity of anchor bolts are proposed from the aspects of body of anchor bolts, screw cap and backing plate.


Ma H.-C.,Hefei University of Technology | Gu J.-C.,The Third Scientific Research Institute of the Corps of Engineers | Zhang X.-Y.,The Third Scientific Research Institute of the Corps of Engineers | Xu J.-M.,The Third Scientific Research Institute of the Corps of Engineers | Gao G.-F.,Hefei University of Technology
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2012

The stabilities of underground facilities are the important research contents of geotechnical engineering. It is meaningful to improve the explosion resisting abilities of underground caverns for national defense and civil projects. So it has important strategic significance to carry out site explosion resisting tests on underground caverns. The displacement characteristics at the top of an underground cavern under three different conditions are introduced, that is long and close cables, short and close cables and regular cables. Furthermore, the situations that two kinds of base plates are used for cables to protect the displacement of the top of the cavern are compared. A conclusion that the protecting effects of flaring cup base plates are better than paddle base plates is put forward. This passage also analyses the relationship between the relative displacement at the top of the cavern divided by the span of the cavern and the scale distance of the explosion is analyzed. It is helpful for searching for the best protecting effects for practical projects.


Xu X.-Y.,University of Science and Technology Beijing | Xu X.-Y.,The Third Scientific Research Institute of the Corps of Engineers | Feng S.-S.,University of Science and Technology Beijing | Huang G.-Y.,The Third Scientific Research Institute of the Corps of Engineers | And 2 more authors.
Binggong Xuebao/Acta Armamentarii | Year: 2012

With the wide use of precision guided weapons, the entrance of underground engineering is likely to be struck by the deep penetration weapons, and the protective doors are encountered with threat from high-speed fragments. The experiments were carried out, in which common reinforced concrete (RC) and reactive powder concrete (RPC) protective doors are tested by high-speed fragments. The fragments were shot by a fragment generator. It is indicated that the fragment generator is able to shot multiple fragments at an anticipated velocity, and the fragments are reasonably distributed, which satisfies the requirements of experimental design. It is found that the protective doors made of RPC perform higher protective capability against fragment penetration than that of common RC. With the same parameters of fragments, common RC door of 120 mm thickness is completely perforated, while the depth of penetration in RPC door is only 65 mm.


Ming Z.-Q.,The Third Scientific Research Institute of the Corps of Engineers | Gu J.-C.,The Third Scientific Research Institute of the Corps of Engineers | Zhang X.-Y.,The Third Scientific Research Institute of the Corps of Engineers | Chen A.-M.,The Third Scientific Research Institute of the Corps of Engineers | And 2 more authors.
Yantu Lixue/Rock and Soil Mechanics | Year: 2012

To study the reinforcement effects of different forms of bolt bolster plates under explosion, two different plates, namely face plate and bowl-shaped plate are selected in the field explosion test. Macroscopic failure pattern, displacement characteristics of tunnel wall, relationship between vault displacement and proportion distance, and vault displacements of both sides of explosion center are compared. Furthermore, reinforcement effects of the two plates on tunnels under the condition of explosion are analyzed. Test results show that bowl-shaped plate can bring tensile strength of bolt into full play; and stiffness of rock mass can be greatly improved. Reinforcement effect of bowl-shaped plate on rock are better than that of face plate.

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