臺灣博碩士論文加值系統

加勁擋土牆目前的設計方法約有一、二十種之多，各設計法在其理論基礎、設計假設與考量上，皆有相當程度的差異。然而針對其應用之基本條件、限制與範圍之探討仍相當缺乏，而對於設計法所採假設之合理性與其適用性之研究，更是付之闕如。
本研究乃選取五種較為常用之設計方法，在不同牆高下，針對五種
不同加勁材加以設計，並對設計結果進行數值分析，由加勁材張力分佈
、側向土壓力分佈、土壓力係數分佈與牆面變位情形，來探討各設計方
法所採假設之合理性，及不同牆高下各加勁材之擋土牆其力學行為。此
外並分析探討地下水對加勁擋土牆行為之影響，及回包式與面版式加勁
牆力學行為之比較。
由數值分析結果顯示：加勁材強度較低之加勁牆，其安全比(分析
所得之加勁材最大張力值和依設計方法計算所得之加勁材張力值的比值
)會較高、加勁材最大張力值分佈較為均勻、加勁材最大張力線會近似
Rankine破壞面之分佈、側向土壓力接近主動土壓力之分佈且較為均勻
、牆面側向變位會較大。加勁材強度較高時，其加勁材最大張力值會隨
深度而約呈線性之增加、加勁材最大張力線會近似雙折線破壞面之分佈
、土壓力係數則介於Ka與Ko之間。
考慮加勁牆體內部浸水時，由分析結果顯示：對回填土為砂性土壤
時，其影響不大。而當回填土為黏土時，不同浸水狀況對加勁材張力及
土壓力分佈之影響相當大，最大增加量達50％以上。

There are more than ten various design methods of rein-
forced retaining walls have been published to date. Within
these design methods exists very large difference on theory
basis, hypothesis and consideration. However it still has few
discussion on basis condition, limit and range of apply. More-
over,it is more lack the research on rationality and applicabi-
lity of hypothesis of design method.
This text choice five design methods which is common use,
and to conduct design with five types of reinforcement under
different wall height. Then conduct numerical analysis against
design results to discuss the rationality of hypothesis of
design methods and the mechanical behavior of various rein-
forced retaining wall. In addition, this text also discuss to
the effect of underground water to reinforced retaining wall
and the comparison of mechanical behavior of the wrapped facing
wall and the concrete facing wall.
According to the outcome of numerical analysis,it shown:the
reinforced retaining wall which reinforcement strength is lower
has higher Safe Retio, more well-distribution of the greatest
value of reinforcement tension, the line of the greatest value
of reinforcement tension approximate to the Rankine failure
plane, the lateral earth pressure is more well-distributed and
will approximate to the active earth pressure, larger lateral
deformation of wall face. However, when the reinforced retaining
wall with reinforcement strength is higher, the greatest value
of reinforcement tension will linear-increased with depth rough-
ly, the line of the greatest value of reinforcement tension
seems approximate to the distribution of bilinear failure
plane, the coefficient of earth pressure is about distribute
between Ka and Ko.