They are employed by construction companies, cement and concrete contractors and manufacturers of precast concrete products, or they may be self-employed.
他们受雇于建筑公司，水泥和混凝土承包商和预制混凝土产品的制造商，或者他们可能成为自雇人士。
According to the special structure of precast block of inverted arch for TBM construction tunnel, the dynamic construction state is modeled by FEM with surrounding rock - structure calculating model.
针对TBM施工隧道仰拱预制块的特殊结构，采用围岩-结构模式，进行了模拟施工动态的受力影响计算分析。
In the construction sector, companies are using more precast concrete, even for high-rise apartment buildings.
在建筑业，企业正更多地使用预制混凝土，即便是高层住宅楼也是如此。
This paper analyses causations of precast floor slab crack in engineering from the aspects of design, material and construction.
本文从设计、材料、施工三方面，详细分析了工程中预制楼板板缝开裂的原因。
The article mainly the precast pile as well as the type of construction technology, organization and management of.
文章主要对预制桩的种类以及施工工艺、组织管理进行了研究。
Precast concrete technology is one kind of industrialized construction methods, and precast concrete structures are one of the most important modern building structures.
预制混凝土技术是工业化的建筑生产方式，预制混凝土结构是现代建筑最重要的结构形式之一。
Making bridge panel concrete with the air cell inner form may quicken the precast bridge panel construction pace, ensure the project quality and drop construction cost.
采用气囊作内模进行浇筑桥面板混凝土，加快了预制桥面板施工进度，确保工程施工质量，并降低了工程施工成本。
Fabricating and demoulding of the base mould is a key during the course of construction for precast plate girder of highway bridge.
公路桥梁预制钢筋混凝土板梁施工中，底模的制作及脱模是关键。
This paper introduces the construction of precast yard, and expounds the equipment matching technology for the precast of single box-beam.
介绍了预制厂建设，叙述了单箱梁预制设备配套技术。
Combined with the construction, the paper introduced the design and application of precast box beam inner form.
根据在太祁高速公路晋祠高架桥箱梁预制中的施工情况，介绍了预制箱梁的内模设计与应用。
Prestressed pipe pile is a precast pile, which has many merits, such as high bearing capacity, high degree industrialization and convenience construction, and it is widely used in engineering now.
预应力管桩作为一种预制桩，具有单桩承载力高、工业化程度高，施工快捷方便等优点而在工程中得到推广应用。
Its Admixture Systems business unit specifically helps customers in the ready-mix, precast, manufactured concrete and underground construction industries.
旗下的外加剂系统部门在掺水即用型预制混凝土及地下建筑等领域对客户帮助犹大。
This paper describes the design and construction of the demolishing scheme of the high-piled wharf, and analyzes mainly the demolishing scheme of precast piles under rocky coast.
介绍高桩梁板码头拆除方案的设计及施工，重点分析岩质海岸地质条件下预制桩的拆除方案。
The construction technique of box girder precast segment assembling by short-line method has been applied abroad, while applied in China in recent years.
短线法箱梁节段预制拼装桥梁施工技术在国外应用较多，在我国近年来也有应用。
In order to solve the torsional problem of precast concrete screw pile in construction, the torsional behaviors of precast concrete pile body were designed strongly and studied by experimental method.
为了解决预制混凝土螺旋桩的抗扭问题，对预制混凝土桩体的抗扭性能进行了加强设计及试验研究。
The application of steam curing process for precast segmental beams of Humin Elevated Project has increased the early strength of concrete and met the requirements of construction progress.
沪闵高架工程预制节段梁采用蒸汽养护的工艺，使混凝土早期强度增长，满足了施工进度要求。
The precast segmental construction technique is widely used in the viaduct structures for both vehicular and light rail systems.
预制节段拼装连续梁桥可广泛应用于高架桥和轻轨等建设项目。
An experimental investigation was conducted to provide high-performance concrete, with high frost resistance and proper strength, to construction of precast elements of Bridges in Qing-Zang railway.
为配合青藏铁路工程应用，配制抗冻性高、强度较高、适合于青藏铁路预应力混凝土梁的高性能混凝土。
The frame elaborated in this research can be regarded as a reference for the construction of a mobilized precast industry management system to bring remarkable benefits for the industry.
最终期望本研究能作为预铸产业建置行动化管理系统之参考，为产业带来更大的利益。
This paper introduces the application of precast static pressure pile, pile pressuring program of precast static pressure pile and some matters needing attention in the construction.
详细介绍了某办公楼沉管灌注桩基础的设计、工程桩的测试结果，对工程桩的质量事故原因进行了分析，并介绍了静压预制桩补强方案和补强效果。
Construction techniques were chosen to be transportable, made of prefabricated elements, mainly from precast concrete, like the pillars and curved concrete shells.
建造时采用可运输的预制元素，主要是预浇铸混凝土，建造支柱和曲形混凝土外壳。
The construction elements of a bridge defects in dynamic testing, using spectrum analysis. Precast bridge beams by the lack of oblique angle, causing the bridge dynamic characteristics change.
采用频谱分析法对桥梁进行动力测试，得出由于该桥预制横梁斜交角度不足，从而引起桥梁动力特性发生变化。
The construction elements of a bridge defects in dynamic testing, using spectrum analysis. Precast bridge beams by the lack of oblique angle, causing the bridge dynamic characteristics change.
采用频谱分析法对桥梁进行动力测试，得出由于该桥预制横梁斜交角度不足，从而引起桥梁动力特性发生变化。
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