Structural layer thickness design method for mixed base course cement concrete pavement

A cement concrete and hybrid technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as being too conservative and not scientifically reasonable in design
CN105975720AActive Publication Date: 2016-09-28CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
2 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2016-09-28

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a structural layer thickness design method for a mixed base course cement concrete pavement. The structural layer thickness design method comprises the following steps that the comprehensive equivalent weight rebound modulus of a plate bottom foundation is calculated; the equivalent bending rigidity and the equivalent thickness of a mixed base course are calculated according to situations of a rigid base course and a semi-rigid subbase course and the rigid base course and a soft subbase course; load stress, load fatigue stress, a interlayer contact condition parameter, vertical contact rigidity, the maximum temperature stress, the temperature fatigue stress and the like are calculated according to the calculation results of the equivalent bending rigidity and the equivalent thickness through an elastic foundation doubling plate model; structural limiting state is checked, the situation that no limit breakage occurs is taken as a checking standard, and whether the drafted structural layer thickness meets requirements or not is determined. The problems of unnecessary waste and early serious damages caused by the unreasonable structural layer thickness design of the mixed base course cement concrete pavement can be effectively avoided, and the method has good social and economic benefits.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of road engineering, and relates to a method for designing the thickness of a structural layer of a cement concrete pavement with a mixed base. Background technique

[0002] In the early days of our country, cement concrete pavement was mainly built. At present, when the requirements for the bearing capacity of pavement structure are high, cement concrete pavement is still the main structural form to choose from. In foreign countries, cement concrete pavement is also widely used because of its long service life. The construction and application of cement concrete pavement can reduce dependence on petroleum resources, make full use of my country's relatively abundant cement and fly ash materials, and drive local economic development. For high-grade highways, the design life of asphalt pavement is 15 years, and that of cement concrete pavement is 30 years, and the investment cost of cement concrete pavement is...

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