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重点项目追踪 | 25万根轨枕托起唐曹铁路

2017-09-18 11:02:51   中国经济网

唐曹铁路铺架工作正在紧锣密鼓进行,铁轨下的混凝土轨枕全部出自中铁十四局北京房桥公司唐山分公司——这个公司承担了唐曹铁路25万根轨枕和90组岔枕的生产,目前已经完成唐曹铁路供枕任务的40%,计划在接下来的1到2个月内完成其余60%的供货。

图为工人们正在吊装成品轨枕。图片赵勇摄

总工程师张睿贤介绍说:“轨枕俗称‘枕木’。随着科技的发展,现如今轨枕的原材料已由木材变成混凝土与钢筋,并需要施加预应力,因此,叫它的全名‘预应力混凝土轨枕’更为科学。”

别看轨枕的模样单调划一,貌不惊人,它的作用可不小。轨枕既要支撑钢轨、保持钢轨的位置,还要把钢轨传递来的巨大压力再传递给道床。它必须具备一定的柔韧性和抗压性,才能在列车经过时,提供足够的强度与韧性来承载压力。

张睿贤指着车间里一台正在把钢筋拉直的机器:“轨枕最大的秘密就在这里:这台设备是数控全自动预应力张拉系统,通过这套系统能够给钢筋施加预应力,从而保证轨枕的内在力学质量。”张总工又指着远处一片冒着热气的坑道,“这里还有一种‘秘密武器’——数字化温控养护系统,通过这套系统可以让混凝土轨枕的强度更快地达到甚至超越设计强度,从而保证轨枕的使用寿命。”

据介绍,北京中铁房山桥梁有限公司唐山分公司是“北京中铁房山桥梁有限公司”下属分公司之一。公司前身为中国人民解放军铁道兵军工企业,是全国大型钢筋混凝土桥梁、轨枕生产企业之一。唐山分公司2015年6月落户曹妃甸滨海镇,在当地政府的帮助下仅20多天就完成了工商开户、税务等一系列手续,2016年初就生产出了第一批成品。

北京房桥公司唐山分公司地处唐曹高速与沿海高速的交会口,交通十分便利。“交通便利是我们选择来曹妃甸投资的一大主因。日前,唐山分公司首次实现用铁路发运轨枕,随着唐曹铁路的即将通车,分公司的业务范围将从现在的方圆300公里,扩大到1500公里……”唐山分公司经理宋立国说:“我们还将继续努力,为京津冀一体化的发展作出贡献。”

作者:黄志山 王庆东

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