Concrete-filled steel tube hollow support and construction method thereof
A technology of steel pipe concrete and rubber concrete, which is applied in the field of geotechnical engineering, can solve the problems of loss of bearing capacity, increased instability of steel pipe concrete, and high pressure of surrounding rock, so as to improve the ability to withstand dynamic loads and reduce the possibility of brittle failure , let the effect of compression deformation and lifting
Active Publication Date: 2019-03-15
BC P INC CHINA NAT PETROLEUM CORP +2
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, for tunnels, underground oil depots, water-sealed caverns, and caverns with high surrounding rock pressure, large deformation, long deformation time, and dynamic pressure, if the concrete-filled steel tube support has no seismic or pressure-yielding function, the interaction between the support and the surrounding rock will During the action, when the load exceeds the bearing capacity of the bracket, the bracket will be unstable and destroyed and lose its bearing capacity
Especially in the presence of dynamic pressure or earthquakes, the probability of overall instability of CFST is greatly increased
Moreover, the existing concrete-filled steel tube support often consumes more concrete, which is not conducive to reducing costs.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0040] my country is one of the countries that produce the largest amount of waste rubber in the world. With the development of the automobile industry, China now has more than 100 million scrap tires per year, and it is growing at a rate of 15% per year. Waste rubber is difficult to degrade under natural conditions, not only occupying land, polluting the environment, destroying plant growth, posing fire hazards, but also causing a huge waste of resources. my country attaches great importance to the treatment and utilization of waste rubber, but the harmless utilization rate is low, about 60%. Therefore, further broadening the application range of waste rubber and increasing the utilization efficiency of waste rubber is an urgent probl...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size (mesh) | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a concrete-filled steel tube hollow bracket and a construction method thereof and belongs to the field of geotechnical engineering, aiming at improving anti-seismic, yield deformation and power load bearing capabilities and lowering the use amount of concrete. The concrete-filled steel tube bracket comprises: a steel tube component, rubber concrete and a connection sleeve connected with the steel tube component; the concrete-filled steel tube bracket is provided with an exhausting hole and a grouting hole, wherein the steel tube component comprises an outer bracket steel tube and a hollow inner bracket steel tube; the outer bracket steel tube and the inner bracket steel tube are connected through one or more positioning steel bars, so that the outer bracket steel tube and the inner bracket steel tube are kept at concentric relative positions; the rubber concrete is a cement-based composite material formed by taking concrete or cement mortar as a base material and uniformly doping various types of non-continuous rubber powder or rubber particles and is arranged between the outer bracket steel tube and the inner bracket steel tube in the steel tube component. The concrete-filled steel tube hollow bracket is used for supporting and protecting.
Description
technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a steel tube concrete hollow support and a construction method thereof. Background technique [0002] Among the existing underground engineering support methods, the steel pipe concrete support is a very effective support structure. In the roadway, chamber or tunnel support of Xinjikou Zidong Mine of Huainan State Investment, Shenhua Ningmei Qingshuiying Mine, Gansu Pingliang Xin'an Mine and other mines, its excellent support performance has been fully realized in engineering practice. test. [0003] However, for tunnels, underground oil depots, water-sealed caverns, and chambers with high surrounding rock pressure, large deformation, long deformation time, and dynamic pressure, if the concrete-filled steel tube support has no seismic or pressure-yielding function, the interaction between the support and the surrounding rock will During the action process, when the load ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/107
Inventor 张仕林李成刚李廷春
Owner BC P INC CHINA NAT PETROLEUM CORP