Journal of Shandong University(Engineering Science) ›› 2019, Vol. 49 ›› Issue (4): 61-69.doi: 10.6040/j.issn.1672-3961.0.2018.165

• Civil Engineering • Previous Articles     Next Articles

Experimental research on mechanical features model of prestressed mutual-anchored retaining wall

Jianhong JIANG1(),Zhenyu YANG2,Qi CHEN2,Qingyu MENG1,Hongbo ZHANG2   

  1. 1. Shandong Traffic Planning and Design Institute, Jinan 250031, Shandong, China
    2. School of Qilu Transportation, Shandong University, Jinan 250061, Shandong, China
  • Received:2018-04-26 Online:2019-08-20 Published:2019-08-06
  • Supported by:
    国家自然科学基金资助项目(51208284);山东省科技发展计划资助项目(2013GSF11603)

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Abstract:

To study the mechanical behaviors of the prestressed mutual anchoring retaining walls under different structural parameters, an indoor model test device was designed considering the mechanical mechanism and different prestress levels and different anchor placement positions. The results showed that due to the lateral restraint effect of the anchor (cable) on the wall and under the lateral prestress, the wall moved towards the direction of the filler, and gradually increased with the prestressing of the anchor. It evolved from T-model into the T+RB model. The earth pressure behind the wall gradually increased and it had a parabolic distribution with the peak at the anchor. According to the test results, the optimal anchoring position was recommended, and the range of anchored prestressing and optimal prestressing. The research results could be used to guide the design calculation of the prestressed mutual anchoring retaining walls.

Key words: highway slope, prestressed, mutual-anchored retaining wall, indoor model test, earth pressure

CLC Number: 

  • U411

Fig.1

Structure diagram of prestressed mutual anchoringretaining wall"

Fig.2

Diagram of coulomb passive earth pressure"

Fig.3

Schematic diagram of the arching effect of the wall"

Fig.4

Stress path of against retaining wall"

Fig.5

Schematic diagram of model test"

Fig.6

Test curve of particle analysis"

Fig.7

Diagram of set up of earth pressure box"

Fig.8

Electronic percentage layout"

Fig.9

Buried anchor bolt and measured axial force"

Fig.10

Diagram of anchor bolt position"

Table 1

Prestress loading range of bolt"

名称 预应力/kN
第1级 0
第2级 2
第3级 4
第4级 6
第n级 2n
最大级 20

Fig.11

Displacement of wall of different anchor bolt positions"

Fig.12

Displacement of top and bottom of wall at different anchor bolt positions"

Fig.13

Wall back earth pressure at different anchorbolt height"

Fig.14

The pressure variation law of the wall back atdifferent anchor bolt height"

Fig.15

The axial force variation law of the wall back atdifferent anchor bolt height"

Fig.16

Earth pressure joint force and heightchange of action point"

Fig.17

Relationship between prestress and bendingmoment of wall"

Fig.18

Change law of area of bending moment envelope"

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