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伦敦的高层体系结构有一个烹饪班t of late. First there was the “Gherkin” by architect Norman Foster; now there is the “Cheese Grater” by Rogers Stirk Harbour and Partners, London. The city's next major high-rise, mothballed for three years during the foundation stage but about to spring to life, got its nickname thanks to its silvery leaning south facade. Passersby likely will find the profile of 122 Leadenhall Street to be the building's most striking feature. But project engineers are more intrigued by the node connections within the structure's expressed structural-steel megaframe. Photo: Courtesy Of British Land The 224-m-tall
而日本努力稳定其失事的福娃ushima nuclear plant, engineers in Ukraine are only now starting construction of a new enclosure for Chernobyl’s fourth reactor, almost exactly 25 years after it exploded causing immense human and environmental damage in the region and globally. (ENR November 24, 2008, page. 80)It's too early to say whether the Japanese will need their version of Chernobyl’s $1.4 billion, 29,000-tonne steelwork safe confinement in which to clear away their nuclear ruins. But the hard lessons learnt in Ukraine’s $2.2-billionthe shelter implementation plan following the 26 April 1986 disaster could give Japan’s clean-up a
Image: Courtesy of Dr. Phillips Performing Arts Center PCL Construction Services, the pending owner's representative for the $383-million Orlando Performing Arts Center, is reviewing Balfour Beatty's construction management contract and subcontractor bids in an effort to cut costs. The first phase of the venue designed by Barton Myers Associates is estimated at $202 million, or $17 million more than is available. The PCL report is due May 9.
Even without the spire that will make London’s Shard the tallest building in Western Europe, its recently topped-out core, reaching 72 floors above ground, already dominates the city. With the structural steelwork frame ending at level 40, concrete columns and post-tension floors will complete the rest of the 310-meter-tall building’s frame next to the River Thames. Now looming 244 m over the London Bridge railroad hub, the Shard’s stump has become a temporarily unattractive city landmark. But from ground level, the rising curtain wall gives a foretaste of the final building, designed by architect Renzo Piano Building Workshop, Genoa, Italy.
Astumbling economy has claimed another victim on the Las Vegas Strip. The two-tower, 1,720-room Sahara Hotel & Casino will close on May 16 amid funding woes that have temporarily stalled redevelopment plans. Photo: Courtesy Of Sahara Hotel & Casino Las Vegas hotel was a popular tourist and entertainment spot in the 1950s, but tough economics are forcing its closure. Los Angeles-based owner SBE Entertainment Group will shutter the 59-year-old resort on 17.5 acres because continued operation is “no longer economically viable,” a company statement said. The closure will likely affect the bankrupt 3.9-mile Las Vegas Monorail, which has a passenger
Structural engineers inspecting Christchurch’s six steel structures designed with eccentric bracing to resist seismic loads found that five performed well in the shallow Canterbury earthquake that devastated the city on Feb. 22. But the engineers are curious about why two eccentric-braced bays of a three-story parking garage did not fare well—one fractured and the other deformed. The garage did not collapse, thanks to redundancy in the overall structure. “This is the first time the level of excitation of an earthquake was at least as large as or has exceeded the design basis in an area where steel, eccentrically braced frames
这Minneapolis Metrodome, ripped and deflated after blizzard-like conditions in December, will be replaced after engineers questioned the safety of the entire fabric dome. The Metropolitan Sports Facilities Commission, which operates the 28-year-old Metrodome, is taking proposals for the job, which will cost an estimated $18.3 million. Offerings are due by Feb. 23, and the work is to be completed by Aug. 1. The dome, a two-layer fabric structure supported by fan-blown air and held in place with steel cables, has been under study since December after snow and ice ripped holes in the fabric and caused it to collapse.
After a lengthy delay in picking a site, plans to build a new $500-million Social Security Administration data center are moving ahead. Federal officials finally selected a site in Urbana, Md., in early February and a request for qualifications for a design-build team for the project is on the street. The 400,000-square-foot project is one of the largest new buildings funded by the 2009 American Recovery and Reinvestment Act. The stimulus act provided $400 million to cover the construction cost, plus $100 million to partially fund equipment for the new center. The project was the focus of a Feb. 11