Experimental Evaluation of Seismic Performance of Squat RC Structural Walls with Limited Ductility Reinforcing Details

This article describes an experimental study carried out on of reinforced concrete (RC) walls of less confining reinforcement than that recommended by ACI 318. A total of eight RC walls with boundary elements comprising of five walls with aspect ratio of 1.125 and three walls with aspect ratio of 1.625 were tested by subjecting them to low levels of axial compression loading and simulated seismic loading, to examine the structural performance of the walls with limited transverse reinforcement. Conclusions are reached concerning the failure mode, drift capacity, strength capacity, components of top deformation, and energy dissipation characteristics of walls on the seismic behavior with limited transverse reinforcement. The influences of axial loading, transverse reinforcement in the wall boundary elements, and the presence of construction joints at the wall base on the seismic behavior of walls are also studied in this paper. Lastly, reasonable strut-and-tie models are developed to help in understanding the force transfer mechanism in the walls tested.     

孔子、苏格拉底思想比较研究

孔子和苏格拉底分别被誉为东西方的伦理学之父,作为轴心时代的文化英雄,他们的思想言行对后世产生了巨大的影响。本文就孔子对中国历史、伦理本位及注入式教学等的影响,苏格拉底对西方理性、平等、自由及启发式教学的影响等进行了比较研究,以期探讨当下人类面对的文化困境和生存危机。     

焦山古炮台夯土成分分析及建造工艺研究

夯土建筑是中国古代建筑的典型代表,现今许多古代建筑的夯土成分、配比及制作工艺已基本失传,夯土的力学性能取决于夯土成分、夯筑方法等,是夯土的重要性能。研究古代建筑夯土成分及性能对于我国古代夯土建筑保护和古代夯土技艺研究具有重要意义。为此,本工作以焦山古炮台夯土为研究对象,使用传统配制和夯筑工艺,在水分控制、糯米汁制作等方面取得一些经验,通过力学性能对比分析、成分分析、X射线衍射分析等,认为4:3:3仿制夯土的各项指标与焦山炮台古代夯土最为接近,可看作古代夯土近似配比。在此配比下模拟传统夯筑工艺,应用于焦山古炮台修复工程取得了较好的效果。     

Biomass Spectrometry Identification of the Fibre Material in the Pall Imprint Excavated from Grave M1, Peng‐state Cemetery,Shanxi, China

In order to identify the fibre material of the pall imprint excavated from the Peng‐state cemetery in Shanxi, biomass spectrometry was applied to determine the amino acid sequences of the residual protein extracted from the soil underneath the imprint. The sequences were searched against a standard protein sequence database. A well‐preserved silk pall sample from the Warring States Period was used as a comparative template. The protein extracted is identified as silk fibroin (Bombyx mori). This finding indicates that the extremely degraded pall was made of silk and that the deceased in the Peng‐state cemetery enjoyed high social status. In this way, a novel methodology, which is very promising in uncovering the origin of silk, could be initiated.     

The Store Keeper Chodar in Ongdoixingka Alley简

<正>Though the shops in alleys of the Barkor Street seem quite ordinary,their rents often shock those who know little about the market.It is almost impossible fo...     

关于柳诒徴《国史要义》

作为民国时期以所谓文化保守主义者著称的柳诒徵,其晚年代表作《国史要义》,与近世言史学的其他著作比较,既不似文化守旧者之迂,又不像以西法论史学者与传统史学之隔阂,庶几可视为使我们脱开些西方学科理论影响,一窥传统史学堂奥的密钥。而在理解中国传统史学的同时,面对传统与现代的二元对立观念的纠缠,或在现代的学科格局中,怎样完成传统史学学术的创造性转换,也是我们阅读《国史要义》时有必要思考的重要问题。     

秦雍城豆腐村制陶作坊遗址发掘简报

秦雍城遗址位于陕西省凤翔县城以南,东距西安市170公里,西南距宝鸡市50公里。据文献记载,从春秋晚期的德公元年(前677年)至战国中期的献公二年(前383年)的294年间,雍城一直作为秦国都城,成为秦人由西向东逐渐迁徙     

传统市场网络的近代变形——近代冀南与西北“土布换皮”贸易初探

绵延日久的冀南与西北之间"土布换皮"贸易,对于深入了解中国传统市场网络的构造及其在近代的延续与变形,以及城乡手工业生产与这种市场网络的关系,提供了一个有价值的案例.以邢台、邯郸为中心的冀南地区,长期以本地出产的土布交换西北省区出产的皮毛,形成了一条重要的长途贸易商路.鸦片战争以后,这一传统商业网络仍继续存在,并发挥了更大的作用.一方面,在国内外机制棉纺织品的冲击下,冀南土布除满足当地农村部分需求外,开始"专以西北为销场",西北市场成为冀南土布生产赖以维持的关键.另一方面,冀南土布换来的西北毛皮支撑了邢台毛皮制作手工业的快速发展,促使邢台成为近代中国毛皮生产和集散的中心之一."土布换皮"的主体是冀南的农民皮毛商贩,他们遵循传统的交易方式进行活动,却同样承担着与近代经济体系相关联的商品运销,从而把近代商业体系无法触及的边地农村同国际市场联系在一起.在这一过程中,传统的"土布换皮"贸易也在发生着深刻的变化,逐渐浸染上近代资本主义关系的特征.     

二里头文化向南方的传播

长江流域及以南地区发现二里头文化遗存的地点可分为九个区。分析这些遗存的年代、文化性质及分区可知二里头文化南传的路线和时间,而传播方式在不同时期和背景下有所区别。二里头文化的南传开启了南方地区古代文化宏观上伴随中原地区文化变迁的新阶段,南方地区也以此纳入了以中原地区为主体的历史体系。