Hoisting technique of steel vestibule of super high, super weight and large span;
超高、超重、大跨度钢通廊的吊装技术
In the National Conference Center Project at Beijing Olympic Park(Area B),there were super high and super heavy floor at 13 locations,with storey heights from 7.
北京奥林匹克公园(B区)国家会议中心工程超高、超重顶板共计13个部位,层高为7。
The study about methods of superelevation calculations on highway design;
公路设计超高计算方法的研究
A few discussions on highway superelevation design;
公路超高设计的有关问题浅析
Through the analysis about superelevation calculation in middle of S type curve,The author brings forward the improvement method of oblique ridge road arch in convolution engagement of S type curve.
根据S型曲线在超高过渡计算时遇到的具体情况进行分析,提出了对"S型曲线"在两反向回旋线衔接处进行用斜脊式路拱设计的改进方法。
The curve radius is one of important parameters which can ascertain line allowable speed,curve super elevation,curve versine,curve widening,curved building clearance widening and length of transition curve.
曲线半径是确定线路容许速度、曲线超高、曲线正矢、曲线加宽、曲线建筑限界加宽、缓和曲线长度等要素的重要参数。
Research on super-elevation about six-or-more-lane freeway;
六车道以上高速公路超高设计方法的研究
It provided theory evidence for the calculation of highway super-elevation.
研究了高速公路缓和曲线长度的确定方法,通过高速公路断面迭加图和超高过渡轨迹图,并研究了超高过渡段内不同的旋转阶段、不同硬路肩宽度和坡度情况下超高值的计算公式,为高速公路超高计算提供了理论依据。
The old design methods have not been fit for the new situation,especially,in super-elevation computing methods,but there is not a new suitable calculating method.
新的《公路工程技术标准》、《公路路线设计规范》、《公路勘测规范》已全部颁布实施,新的《标准》、《规范》在设计理念和技术手段上都与旧的《标准》和《规范》有较大不同,原有的设计计算方法与新《规范》、《标准》不相符,尤其是超高计算部分,有很多新规定,可公开的、可供参考的计算公式很少。
Considering the complicated situations such as uncertainly in strata pressure, high abnormal pressure coefficient, strata being easy to collapse, co-existence of well blowout and lost circulation etc, the article analyzes technical difficulties of drilling fluid with super high density, decides prescription of drilling fluid with density of over 2.
针对赤水官渡地区的地层压力规律性差,异常压力系数高,地层易垮塌、喷漏并存等复杂情况,分析了超高密度钻井液技术难点,在优选处理剂和控制合适的膨润土用量的基础上,确定了密度为2。