1、地下延續(xù)墻適用于地下工程的主體結(jié)構(gòu)、支護(hù)結(jié)構(gòu)以及復(fù)合式襯砌的初期支護(hù)。
1, the underground continuous wall is suitable for the main structure of underground engineering, the supporting structure and the initial support of composite lining.
2、地下延續(xù)墻應(yīng)采用(屋頂)防水混凝土(北京古建材料),膠凝材料用量不應(yīng)小于400kg/m3,水膠比不得大于0.55,坍落度不得小于180mm。
2, the underground continuous wall should use waterproof concrete, cementitious material consumption should not be less than 400kg/m3, water cement ratio not greater than 0.55, the slump is not less than 180mm.
3、地下延續(xù)墻施工時(shí),混凝土應(yīng)按每一個(gè)單元槽段留置一組抗壓強(qiáng)度試件,每五個(gè)單元槽段留置一組抗?jié)B試件。
3, the construction of underground continuous wall, the concrete should be placed in each unit of a group of compressive strength test pieces, each five units of a group of anti permeability test section.
4、疊合式側(cè)墻的地下延續(xù)墻與內(nèi)襯結(jié)構(gòu)連接處,應(yīng)鑿毛并清洗干凈,需要時(shí)應(yīng)作特別(屋頂)防水處理。
4, stacked side wall of the underground continuous wall and lining structure connection, should be cut and clean, if necessary, should be special waterproof treatment.
5、地下延續(xù)墻應(yīng)根據(jù)工程要求和施工條件削減槽段數(shù)量;地下延續(xù)墻槽段接縫應(yīng)避開拐角部位。
5, the underground continuous wall should reduce the slot number according to the requirements of the project and construction conditions; underground continuous wall joints should avoid the corner.
6、地下延續(xù)墻如有裂縫、孔洞、露筋等缺陷,應(yīng)采用聚合物水泥砂漿修補(bǔ);地下延續(xù)墻槽段接縫如有滲漏,應(yīng)采用引排或注漿封堵。
6, such as underground continuous wall cracks, holes, reinforcement and other defects, should be used to repair the polymer cement mortar; underground continuous wall joints should be used if there is leakage, drainage or grouting.
7、地下延續(xù)墻分項(xiàng)工程檢驗(yàn)批的抽樣檢驗(yàn)數(shù)量(關(guān)鍵詞優(yōu)化),應(yīng)按第延續(xù)墻5個(gè)槽段抽查1個(gè)槽段,且不得少于3、個(gè)槽段。
7, the underground continuous wall sub project inspection batch sampling inspection quantity, should be according to the 5 section of the continuous wall of the 1 slot section, and shall not be less than 3, groove section.