全耗尽SOI器件源/漏区抬升结构的形成（英文）

介绍了在全耗尽绝缘体上硅(FDSOI)结构上,通过在SOI表面外延生长形成金属氧化物半导体场效应晶体管(MOSFET)源/漏区抬升结构的方法。研究了不同的工艺参数对外延生长的影响,从而在合适的掺杂浓度下得到均匀的外延生长形貌。提出了两种新的途径来控制SOI的厚度:采用一种新的方法生长垫氧层,以及在源漏区外延生长前,在衬底外延生长硅薄膜层,从而补偿工艺导致的SOI损耗。这两种新的方法使SOI厚度增加了约5 nm。工艺优化后的FDSOI器件沟道厚度约为6 nm,源漏外延层厚度为20~30 nm。最后,阐述了外延成分对器件电学性能的影响。

浅谈JU2000E自升式钻井平台重要结构焊接质量管理

本文主要分析JU2000E型400英尺自升式钻井平台特殊结构焊接质量管理,从桩腿、抬升结构、悬臂梁、直升机平台重要结构建造对焊接质量的管理和监控要求进行总结,对提高现场质量管理水平和质量有一定的借鉴作用。

Numerical evaluation of uplifting effect for upper structure by grouting

A stratum grouting-soil-structure interaction model which simplified the grouted zone into a series of spherical grout bulbs was established using FLAC3D program. The hypothetical non-uniform expansion process to reach an assigned volume strain due to soil compression by grouting was achieved by imposing radial velocity on outer mesh nodes of these spheres. This new method avoids the repeated trial calculation needed in the traditional method which applied a fictitious expanding pressure in the grouting element. The deformation and additional internal forces of structure were investigated during each grouting strategy and the influences of various stiffness of grouting proof curtain and bearing capacity of pile tip were discussed simultaneously. The numerical model is proved to be effective to replicate general behavior expected in the field and is capable of modeling the uplifting effect for the surface structure by grouting.

抛石整平船制造技术研究

抛石整平船为短周期项目,工期紧任务重,结构复杂,制作难度大,加工精度高。通过对其制造特点分析,介绍了船体制作工艺、抬升主结构制作工艺和桩腿制作工艺,对同类自升式升降平台的制造具有一定的借鉴作用。

传统民居地基注浆加固技术研究

根据传统民居地基加固原则及试验场地工程地质条件选定注浆材料配合比及注浆参数;随后进行注浆孔封口试验及试验房屋分组注浆试验,依据前期注浆试验结论对示范房屋进行注浆加固;探讨浅层地基的注浆加固过程中注浆压力控制,分析注浆加固过程中房屋沉降发展规律;提出浅层粉质黏土地基注浆浆液填充率、浆液填充率比例系数的概念及计算方法,所得试验结果为相应技术推广提供依据。