05箱型基礎(chǔ)工程.doc

一、 施工準(zhǔn)備
（一） 作業(yè)條件
1、 地基土質(zhì)情況，釬探、地基處理、基礎(chǔ)軸線尺寸、基底標(biāo)高情況等均經(jīng)過勘察、設(shè)計(jì)、監(jiān)理單位驗(yàn)收，并辦理完隱檢手續(xù)。
2、 完成基槽驗(yàn)線，辦完驗(yàn)收手續(xù)。
3、 地下降水工作完成，具備施工條件。
4、 根據(jù)設(shè)計(jì)及規(guī)范要求進(jìn)行，校核混凝土配合比，做完混凝土配合比試配。原材料的復(fù)試、臺(tái)秤經(jīng)校準(zhǔn)、檢定合格，準(zhǔn)備好混凝土試模。
（二） 材質(zhì)要求
1、 水泥：水泥品種、強(qiáng)度等級(jí)應(yīng)根據(jù)設(shè)計(jì)要求確定。質(zhì)量符合現(xiàn)行水泥標(biāo)準(zhǔn)。工期緊時(shí)可做水泥快測(cè)。
2、 砂、石子：根據(jù)結(jié)構(gòu)尺寸、鋼筋密度、混凝±工程施工工藝、混凝土強(qiáng)度等級(jí)的要求確定石子粒徑、砂子細(xì)度。砂、石質(zhì)量符合現(xiàn)行標(biāo)準(zhǔn)。
3、 水：自來水或不含有害物質(zhì)的潔凈水。
4、 外加劑：根據(jù)施工組織設(shè)計(jì)要求，確定是否采用外加劑。外加劑必須經(jīng)試驗(yàn)合格后，方可在工程上使用。
5、 摻合料：根據(jù)施工組織設(shè)計(jì)要求，確定是否采用摻合料，質(zhì)量符合現(xiàn)行標(biāo)準(zhǔn)。
6、 鋼筋：鋼筋的級(jí)別、規(guī)格必須符合設(shè)計(jì)要求，質(zhì)量符合現(xiàn)行標(biāo)準(zhǔn)。

First, construction preparation
(A) Operating conditions
1, foundation soil conditions, drill exploration, ground handling, basic axis size, basement level will be well after the investigation, design, supervision and inspection unit, and go through the complete inspection procedures implicit.
2, complete the foundation trench inspection line, after finishing acceptance procedures.
3, groundwater pumping and completed, with construction conditions.
4, according to the design and specification requirements, check concrete mix, finished with a test of concrete. Re-testing of raw materials, platform scale by calibration, test qualified, ready concrete tryout.
(B) material requirements
1 cement: cement variety, intensity levels shall be determined according to design requirements. Meet current standards of quality cement. Tight time schedule can do quick measure of cement.
2, sand, gravel: According to the structure, size, steel density, coagulation ± engineering construction techniques, concrete strength requirements determine the size of gravel, sand fineness. Sand, stone quality meets current standards.
3, Water: tap water or clean water free of harmful substances.
4, admixture: According to the construction organization design requirements, determine whether the use of additives. Additives must be approved by test-requisite for use in engineering.
5, admixture: According to the construction organization design requirements, to determine whether use of admixtures, the quality of the current standard.
6, steel: steel grade, size must meet the design requirements, quality meets current standards.

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