Central Casting with Vince Hagan HT3 Haganator

With Covid-19 safety protocols firmly engrained for nearly a year, work continues on schedule at one of the highest volume precast, prestressed concrete yards in North America: the Dragados-Flatiron Joint Venture (DFJV) Pre-Cast Facility, Hanford, Calif. The 40-acre operation abuts expansive almond tree parcels along the midpoint of a 60-mile route defined in the design-build California High-Speed Rail Authority Construction Package 2-3 (CP 2-3).

Joint venture partners Dragados USA, Inc., New York, and Flatiron West Inc., Benicia, Calif., bring major infrastructure project experience, including fast track concrete work, in North America and international markets. Their current charge in the California Central Valley entails rail and right of way through Fresno, Tulare and Kings counties and the cities of Hanford, Corcoran and Allensworth. CP 2-3 represents a charter segment of the California High-Speed Rail, the masterplan for which contains inland and coastal routes from San Diego to San Francisco.

Helser Industries provided a twin, 600-ft. California Wide Flange form warranting deep bulkhead foundations equal to enormous stressing forces. The manufacturer also delivered self-stressing 300- and 400-ft. standalone CWF forms.

DFJV的15亿美元以上的包装包括高级，空中及可能的级铁路区域，该级别是为了紧密的公差而建造的，可以高速的速度来实现安全的火车通道；现有的BNSF轨道搬迁约5.5英里；现有BNSF铁路轨道的预期越过；水路和野生动植物结构的建设；另外，道路的重建或封闭和关闭。总体而言，高架桥，地下通道或立交桥将在整个CP 2-3扩展中可容纳36个级别。

Dragados Flatiron Joint Venture production and engineering staff configured the 40-acre, Central Valley site around California Wide Flange (above, right and center) and tub girder (above, left) fabrication. The latter profiles suit a limited number of Construction Package 2-3 crossings with height or clearance limitations. Foundation work (top, foreground) for piers along an elevated California High Speed Rail stretch demonstrated heavy emphasis on prestressed square piles. Later in the construction schedule: Deck panels, cast in an auxiliary yard, are staged in between the Hanford right of way and DFJV Pre-Cast Facility. Hamilton Form Co. delivered formwork for the latter elements plus a 300-ft. bed for California Wide Flange girders. DRONE PHOTO: Dragados Flatiron Joint Venture

汉福德预装机构的工作人员有一个四年的时间表，最终在2022年2月，制造了近2,400个加利福尼亚宽法兰（CWF）梁，长达54英尺至151英尺，长42英寸，至120英寸。90浴缸梁，长44英尺至110英尺，深101英寸，重达500,000磅。12,000多个甲板面板，3英尺x 8英尺至8英尺x 8英尺，用于宽法兰或浴缸梁结构；并且，100,000多14英寸的线性英尺。正方形。

工资大约100达到顶峰,院子里有14个casting points, led by 300-ft., 400-ft., and 600-ft. CWF beds and two tub girder forms. During higher production weeks, crews have cast 8,000 linear feet of pile, 5,000 linear feet of CWF girders, 100 linear feet of tub girders and nearly 8,000 square feet of deck panels. The plant carries Precast/Prestressed Concrete Institute and California Department of Transportation (Caltrans) certification, owing to different public or private land owner requirements for the 30-plus crossings within CP 2-3.

DFJV tailored aVince Hagan HT Haganator portable plant和BHS DKX 6.0 twin shaft mixer for speedy output of high-fl ow concrete. A very narrow concrete schedule for girder, pile and deck panel fabrication is centered on sand and 3/8-in. crushed granite. Two grades of mixes with self-consolidating properties have suited most California Wide Flange or tub girder, girder deck panel and pile fabrication.

DFJV围绕着通过常规搅拌机卡车运送的自固化型混合物的生产，并根据需要清除梁形式的皮带建造了批处理厂。承包商将Vince Hagan HT Haganat188金宝搏亚洲真人or与BHS双轴混合器结合在一起，后者的短暂循环非常强大，可产生20英寸的高流量混凝土。以零骨料分离的范围扩散。锚定梁，面板和桩混凝土时间表的混合物是在24小时内达到5,000 psi或7,000 psi抗压强度的混合物。带有III型水泥，3/8英寸。第二种混合物通常在9,000 psi以北获得了碎的花岗岩，沙子和大型建筑商的超级塑料。该工厂的每日产量范围为100至300码。

This article originally appered as theCover Story in Concrete Products Magazine