- 覆蓋層, 頂板, 懸?guī)?
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overlying bed中文什么意思
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- periodic maintenance and rehabilitation can prolong the road's service life . an asphaltic overlay is applied to the old pavement surface in good time, which not only enhances the strength of the pavement, but also improves the using performance of the old pavement instead of doing lots of rebuilding works . therefore, the thickness of asphalt concrete overlays is less than the thickness of the reconstructed pavement
定期的養(yǎng)護(hù)與維修可以延長瀝青路面的使用壽命，及時(shí)地在瀝青路面上加鋪罩面，不僅可以增強(qiáng)路面強(qiáng)度，還可改善路面的使用性能，而不必做大量的重建工作，其厚度也小于重建施工的厚度，因此對于已破損的路面，采用瀝青混凝土罩面?？梢蕴峁┳罱?jīng)濟(jì)的修復(fù)形式。 - based on understanding of many practices of asphalt overlay on old cement concrete pavement in our country and rehabilitation of boai road in zhongshan city, this paper analyzes and studies the rehabilitation technology of old cement concrete pavement systematically, includes : ( 1 ) the assessment for structure characteristic of old cement concrete pavement a correct assessment for pavement distress and structure characteristic of old cement concrete pavement before overlay is the stick point of preventing reflection cracking and guarantee the success of rehabilitation, which requires understanding how the structure characteristic of old pavement effects the stress and reflection cracking of the asphalt overlay
本文在調(diào)查了解國內(nèi)許多舊路改造實(shí)踐工程的前提下，基于中山市博愛一路的改造實(shí)踐，對舊水泥混凝土路面瀝青罩面改造進(jìn)行了系統(tǒng)的分析研究。主要的研究內(nèi)容包括：(1)原有路面結(jié)構(gòu)性能的評估在瀝青混凝土加鋪罩面之前對舊水泥混凝土路面的損壞情況和結(jié)構(gòu)狀況進(jìn)行正確的評價(jià)是解決反射裂縫和保證加罩成功至關(guān)重要的一環(huán)，其前提就是要了解舊水泥混凝土路面的結(jié)構(gòu)特性對瀝青罩面層中的應(yīng)力和反射裂縫的影響。 - thermal stress is one of the main factors to cause the reflective crack of asphalt overlay on concrete pavement, shrinkage in asphalt overlay is restricted while temperature drop, asphalt overlay at the joint or crack of cement concrete pavement produces thermal stress concentration to cause reflective crack
摘要溫度應(yīng)力是引起水泥混凝土路面瀝青加鋪層反射裂縫的主要因素之一，當(dāng)溫度降低瀝青加鋪層變形受阻時(shí)，水泥混凝土路面接縫或裂縫處瀝青加鋪層會(huì)因溫度應(yīng)力集中而產(chǎn)生反射裂縫。