﻿ 有限元分析技术在CRCP板路面受力研究中的应用 Finite Element Analysis Technology Application in Studies on CRCP Pavements Subject to Forces

Hans Journal of Civil Engineering
Vol.04 No.03(2015), Article ID:15247,7 pages
10.12677/HJCE.2015.43017

Finite Element Analysis Technology Application in Studies on CRCP Pavements Subject to Forces

Ming Yang

Zhejiang Provincial No. 1 Water Conservancy & Electric Power Construction Group Holdings Co., Ltd., Hangzhou Zhejiang

Email: 457357391@qq.com

Received: Apr. 23rd, 2015; accepted: May 15th, 2015; published: May 20th, 2015

ABSTRACT

By engineering examples and the finite element software (ABAQUS), the CRCP-plated road model was established in this article. The response sensitivities to pavement structure parameters were analyzed by adjusting these parameters such as the thickness of CRCP, C35 leveling layer and the ground modulus. The stress effect of the CRCP plates in the different structural designs was investigated to further analyze, verify and optimize the design. It plays an important role in the rapid development of key technologies in continuously reinforced concrete pavement.

Keywords:CRCP, Model, Parameter Analysis, Optimization Design

Email: 457357391@qq.com

1. 引言

CRCP除了具有行车舒适，承载能力高，经久耐用，养护维修少等显著优点外，在某些特殊条件下更能显示出其它路面无法比拟的优越性。此外，AC + CRCP复合式路面结构，以CRCP作为承重层，用沥青混合料面层改善路面的服务性能，既有CRCP路面承载力高，使用寿命长，抗车辙能力强的特性，又有沥青路面行车舒适、噪音小和易养护的优点。

2. 工程概况

3. 有限元模型的建立

3.1. 地基模型选取

3.2. 钢筋和混凝土板之间的界面

3.3. 混凝土板和地基之间的界面

3.4. 车辆荷载及其分布

(1)

(2)

(3)

3.5. 材料参数选取

Figure 1. Finite element modeling uniaxial double transverse load distribution and equivalent area map

Table 1. Material parameter value

3.6. 有限元模型的确立

4. 参数敏感性分析

4.1. CRCP层厚度影响

4.2. C35调平层厚度影响

CRCP板的力学响应计算结果如表3所示，变化规律如图5图6所示。

Figure 2. Model schematic diagram

Figure 3. The maximum tensile stress of CRCP slab thickness variation

Figure 4. Maximum vertical displacements of CRCP slab thickness variation

Figure 5. Maximum tensile stress with C35 levelling layer thickness variation

Figure 6. Maximum vertical displacement of the C35 leveling layer thickness variation

Table 2. The mechanical response calculation results of CRCP plate

Table 3. The mechanical response calculation results of CRCP plate

Table 4. The mechanical response calculation results of CRCP plate

Figure 7. The maximum tensile stress of subgrade reaction modulus changing law

Figure 8. Maximum vertical displacement of soil reaction modulus changing law

4.3. 地基反应模量影响

CRCP板的力学响应计算结果如表4所示，变化规律如图7图8所示。

5. 结语

1) 增大CRCP板厚可以明显减小CRCP层的力学响应。

2) 增大C35调平层的厚度可以明显减小CRCP层的力学响应。

3) 增大地基反应模量可以明显减小CRCP层的力学响应，较好的改善了CRCP层的受力状况。

Finite Element Analysis Technology Application in Studies on CRCP Pavements Subject to Forces. 土木工程,03,135-142. doi: 10.12677/HJCE.2015.43017

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