Using a spatial composite finite element method, combining three-dimensional solid element and bar element, the mechanical analysis of a two-span curved PC continuous box girder bridge is conducted.

采用三维实体单元和杆单元相结合的空间组合有限元方法，对一座两跨曲线预应力混凝土箱形连续梁桥进行空间受力分析。

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The main bridge of Sanmenjiang Bridge in Liuzhou is a 3-span partial cable-stayed prestressed concrete box beam bridge with two pylons and double cable planes.

柳州三门江大桥主桥为双塔、双索面、三跨部分斜拉预应力混凝土箱梁桥。

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In this structure, the natural bridge support bar in the middle of two free pile after a wide span can be achieved.

在这种结构中，天然支架桥在两个自由杆的中间加桩后可达到很宽的跨度。

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That's how many LED bulbs the 46-year-old is using for "The Bay Lights, " an art installation that will illuminate the western span of the San Francisco-Oakland Bay Bridge for the two years, starting March 5.

WSJ: The Vision for Lighting the Bay Bridge

The problems at Airbus are analogous to assigning two crews to build a bridge where each starts construction on the opposite banks of a river and, as the bridge comes together at mid-span, they discover that the two sides do not match.

ECONOMIST: Machine politics

The temporary fix is a four-lane span consisting of two 24-foot-wide structures to replace the collapsed portion of the bridge and allow drivers to cross the river at reduced speeds.

WSJ: Crumpled Bridge in Washington State to Get Temporary Fix