Fabrication of the box beam is divided into such parts as reinforcement, formwork, concreting, prestressing, moving and storing of beam, pipe grouting under pressure, end sealing of the beam, water - proof layer on the bridge surface system, protective coating etc. the paper makes description of effective box beam construction technology and workmanship which can be adopted in other projects, such technologies as : manufacturing and fixing of reinforcement, steel reinforcement fixing baseplate, web plate and top plate respectively and lifting the steel skeleton into form, requirements of design and manufacturing and way of utilization for dismantling - erection type formwork and hydraulic formwork, optimization of concrete ratio, concrete pouring process of two ends of beam in priority over the middle, in sequence of first baseplate followed by web plate and top plate at last, concrete pouring in inclined section and in horizontal layer, concrete vibration mainly by external vibrator in assistance with internal vibrator, methods and regulation for steam curing of concrete, dual controls over stress and strain to ensure quality of prestressing workmanship, construction method of effective beam moving by heavy - weight special moving facility, some regulations and key notes about construction of grouting under pressure, beam ends sealing, water - proof layer on the bridge surface system, protective coating
箱梁製造由鋼筋工程、模板工程、混凝土工程、預應力工程、移存梁工程、孔道壓漿工程、梁體封端工程、橋面防水層和保護層工程等施工環節組成。文中介紹的採用胎
具製作和綁扎鋼筋，分底腹板和頂板分別綁扎並吊裝鋼筋骨架入模；拆裝式和液壓式兩種模板的設計、製作要求和使用方法；綜合考慮、優化混凝土配合比，混凝土灌注從兩端至中間、先底板、后腹板、再頂板的施工順序和斜向分段、腹板水平分層、附著式振
搗為主、插入式
搗固為輔的施工工藝，蒸汽養護的方法和規定；應力應變雙控制確保預應力施工質量的施工技術；採用重物移運器有效移梁的施工方法；壓漿、封端、橋面防水層和保護層施工的一些規定和注意事項等都是對箱梁製造行之有效的施工技術和施工方法，並可為以後類似施工作借鑒。
Dry ramming material selects synthetic raw material and additive. it is noted for high density, easy for sintering and building, which is idel materials for hp, uhp electric stove
乾式
搗打料是選用合成原料及添加劑製成的，
具有抗鋼水滲透性強、易燒結、堆積密度高和施工方便等特點，是hp 、 uhp電爐爐底使用的理想材料。
To best achieve the working performance of the said concrete, with the help of theology theory in the research, we have analyzed the principle of free - vibration densifying and shaping of mixed concrete, that is, with the perquisite of fluidity, the concrete should have good property of filling - up - space, penetration through voids of fixed steel reinforcement, adherence and prevention from losing water and segregation, and the conflict between anti - segregation and deforming capability should be sorted out
為得到自密實高性能混凝土的最佳工作性能，在研究中藉助流變學理論，分析研究了混凝土拌合物免振
搗成型和密實的機理，在大流動性的前提下，要求混凝土
具有良好的填充性、鋼筋間隙通過性和粘聚性，防止泌水、離析，解決變形能力與抗離析性能力的矛盾。
Self - densifying high performance concrete is well - performing concrete with the good performance of fluidity, anti - segregation and filling - up - space. with its own gravity and without any vibration, it can automatically fill up the space in and between fixed shutters and form self - densified concrete structure of ideal dynamic property and durability, therefore, it can accelerate construction progress of a building, shorten the construction period, secure concrete quality and improve the building ' s durability. in the mean time, it is conducive as well for environment protection and effects remarkable social and economic efficiency
自密實混凝土屬于高性能混凝土，它
具有高流動性、高抗離析性、高填充性的性能，在自重作用下無需振
搗，自行填充模板空間，形成自密實的混凝土結構，有良好的力學性能和耐久性能，可以加快工程建設進度、縮短工期、有效控制混凝土的質量、提高建築物及構築物的耐久性，並有利於環境保護，
具有較高的社會和經濟效益。
The research work about durability of high - performance self - compacting micro - expansive concrete show that the micro - expansive function and micro - bubble producing function of mineral admixture h can improve the impermeability, frost - resistance ability and sulfate eroding resistance ability etc of self - compacting concrete
研究了免振
搗微膨脹高性能混凝土的各項耐久性能，結果表明：山于新型礦物添加劑h的微膨脹功能和微量發氣功能，研製成功的免振
搗微膨脹高性能混凝土
具有優良的抗滲性、抗凍性、抗硫酸鹽侵蝕等耐久性能。
The drunken man smashed up all the furniture
那醉漢
搗毀了所有的傢
具。
About 400 food and environmental hygiene department staff join hands with the police in the biggest operation ever mounted against illegal hawkers in tin shui wai, yuen long. seventeen illegal cooked food stalls are smashed and 36 tonnes of food and equipment are carted away in 50 vehicles
約400名食環署人員聯同警方在元朗天水圍一帶進行歷來最大規模掃蕩無牌小販行動，搗破17間無牌熟食檔及充公了36噸食物和器具，以車輛分50架次運走。
