垂直流人工湿地组合工艺在绿色建筑中的应用

在某房地产公司深圳总部绿色建筑工程中,采用水解酸化/垂直流人工湿地组合工艺处理优质杂排水,采用接触氧化/反硝化沉淀/垂直流人工湿地处理生活污水,对实际设计参数、水质监测数据进行分析可知,垂直流人工湿地组合工艺对污染物的总体去除率较高,出水水质完全能满足回用要求.垂直流人工湿地组合工艺完全可满足绿色建筑对节约水资源、保护环境、减少污染的要求.     

强夯法在厦门软件园处理杂填土地基的运用

结合工程实例,介绍了设计对地基土的要求、强夯施工参数的选择以及特殊情况的处理方法,并通过进行大量的试验,对其施工检测结果进行了分析,工程实践表明,使用强夯法处理软弱地基土,造价低、工期短、处理范围大,有广泛的推广价值。     

When green marketing meets reality: selected facts about sustainable house building

Since 2012, Life Cycle Engineering Experts (LCEE) have carried out a series of comprehensive studies into the sustainability of market‐relevant (also potentially) construction methods in German housing ([1] to [4]). The methodical basis was a systematic application of the sustainability assessment approach of the Deutsches Gütesiegel Nachhaltiges Bauen (DGNB) applied to representative model buildings from the detached house and apartment building sectors (see Figs. 1 and 2). The key findings have been compressed into themed fact sheets intended to ensure appropriate knowledge and information transfer to various recipients. As a contribution to less marketing and more reality, the following paper outlines the lessons learnt from selected example fact sheets concerning sustainable housing.     

某杂填土场地地基勘探评价

对上海某建筑物拟建场地杂填土地基进行专项评价分析，查明拟建工程场地浅部杂填土层的均匀性，确定杂填土层的地基极限承载力，评价保留杂填土地基的可行性，并对地基处理提出了建议方案。     

Multi-stage transformation in annealed Ni-rich Ti49Ni41Cu10 shape memory alloy

Multi-stage transformation (MST) in 500 °C annealed Ni-rich Ti₄₉Ni₄₁Cu₁₀ shape memory alloy (SMA) is investigated by differential scanning calorimetry (DSC), dynamic mechanical analyzer (DMA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The as solution-treated alloy undergoes B2 ↔ B19 ↔ B19′ two-stage transformations. Ti(Ni,Cu)₂ precipitates are formed in 500 °C annealed specimens. Alloy annealed at 500 °C for 6–24 h exhibits MST. This MST is confirmed by DMA tests and is composed of B2₁ ↔ B19₁ ↔ B19′₁ and B2₂ ↔ B19₂ ↔ B19′₂ transformations corresponding to the regions near and far from Ti(Ni,Cu)₂ precipitates, respectively. Experimental results show that the more the annealing time, the more the B2₁ ↔ B19₁ ↔ B19′₁ transformations and finally only B2₁ ↔ B19₁ ↔ B19′₁ transformations retain with the transformation temperatures close to those of Ti₅₀Ni₄₀Cu₁₀ SMA.     

异型耐火砖模具3D造型方法的研究

提出了一种基于Auto CAD2000的异型耐火砖模具的参数化设计方法，该方法利用Auto CAD提供的三维造型功能，根据异型耐火砖的特点及其与模具的装配关系，创建异型耐火砖的类，并利用拓扑同构理论，构造异型耐火砖盒子，同时生成异型耐火砖的数据结构，根据异型耐火砖的生成规则和工艺要求，并自动生成异型耐火砖的模具．     

Dislocation dynamics simulations of precipitation hardening in Ni-based superalloys with high γ′ volume fraction

The flow stress of Nickel-based γ/γ′ superalloys containing up to 73 vol.% of Ni₃Al precipitates is calculated by dislocation dynamics simulations of a dislocation pair gliding on {111} planes, for temperatures up to 1000 K. It is calculated for different composition-related parameters (friction stress and APB energy), as well as for different microstructural parameters (channel width, precipitate volume fraction and the geometry of the intersection of the {111} glide plane with the precipitate). The emphasis is on the bowing-assisted cutting regime, which is the prevalent deformation mechanism observed in the simulations.     

杂填土区浅埋偏压隧道进洞施工技术及质量控制措施

目前城市地铁隧道暗挖施工一般利用施工通道斜井进入正线,作为隧道正线开挖及材料运输通道。能够选择好合理的施工通道线路,对后期施工影响巨大。由于在城市核心区域修建施工通道,场地多受限制,有时需在地质条件不利的情况下完成施工通道挂口进洞。重庆地铁环线涂山车站施工通道洞口位于浅埋偏压杂填土地段,在此条件下施工难度极大,特别是安全进洞施工。该文以此隧道为案例,对复杂地质情况下的进洞施工技术等进行研究,相关施工技术及措施直接指导隧道施工。