利用文物建筑的“三雕”开发家具市场的研究

文物建筑砖木石“三雕”具有极大的艺术价值和市场价值，通过研究，将文物的保护与利用和家具与木制品行业相结合，探讨了在家具与木制品行业开发文物建筑砖木石“三雕”模式。     

爆破拆除砖烟囱爆破切口范围的计算

结合拆除爆破工程实践,建立了砖烟囱爆破切口圆心角的计算公式．计算结果表明：圆心角随烟囱质量的增加而减小,随烟囱半径和壁厚的增加而增大,随砖与砂浆之间粘接强度的增大而增大．大部分砖烟囱爆破切口圆心角的变化范围为149～196,°,建议除质量特别小的烟囱外,砖烟囱爆破切口圆心角不宜大于180°.     

The usability of the brick dust and blast furnace slag in zeolite-based lime mortars in different curing environments

In this study, air lime was substituted by three different pozzolanic materials, namely BFS and brick powder and zeolite in different proportions as individual or double. The produced pozzolanic lime mortars were cured in air and high relative humidity environments. Special attention was given to the mechanical and physical properties of mortars under different curing conditions. In addition to the curing effect, the effect of using different pozzolans was also investigated.As a result, it has been observed that high relative humidity cure improves the mechanical properties of pozzolan mortars but is not effective on their physical properties. It shows that there are significant differences in the mechanical properties of mortars with pozzolan, which are exposed to different curing conditions, especially at an early age. It shows that the mechanical properties of mortars with pozzolan, which are exposed to different curing conditions, especially at an early age, increase twice on average. The high relative humidity cure shows that the non-pozzolan air-lime mortars slow down the performance properties. Overall, conditions of high relative humidity can more quickly improve the performance characteristics of puzolan mortars.     

不均匀承载“点式”楼爆破拆除技术

介绍了具有复杂砖混结构、不均匀承载基础的“点式”楼的爆破拆除 ,对爆破切口、爆破参数的选择、合理起爆网路的使用、延迟间隔的确定等等作了详尽的叙述。所获得的一些经验对类似工程可能是有用的     

55m砖烟囱小角度切口爆破拆除

为了成功爆破拆除一座55m高的砖结构烟囱,根据周围环境、烟囱高度及其结构特点,选取了合适的爆破倾倒方向和合理的爆破参数,采用了精准的爆破起爆网路。在实际工程中,砖烟囱爆破切口圆心角多数在200°²20°,通过对烟囱倾倒需满足的条件进行计算,确定其满足条件的爆破圆心角范围。设计了小角度爆破切口,其对应圆心角为185°,并且在爆破前进行预处理。起爆后,烟囱按照设计方向顺利倾倒,取得了较好的爆破效果。振动监测结果均在安全允许范围内,验证了砖烟囱小角度切口爆破拆除的可行性,可为类似工程提供参考。     

光洋SH1-32R2型PLC在砖机控制系统中的应用

针对旧式制砖机控制系统效率低、可靠性差、运行不稳定等问题,提出了用光洋SH1-32R2型PLC对制砖系统进行控制。说明了PLC控制系统的构成及工作实现过程。     

砖混结构墙顶温度裂缝的控制

提出了控制砖混结构墙顶温度裂缝的近似计算方法以及有关防治措施。     

62m高砖结构厚壁烟囱的定向爆破拆除

用定向爆破拆除62m高砖结构厚壁烟囱时,利用烟囱上恰好位于爆破切口两侧的自然裂缝代替定向窗。由于烟道口早已封堵,无法入内进行内衬的预处理。为此,在爆破切口时通过适当增大药量,把内衬和烟囱壁作为一个整体予以爆破。此外,还介绍了爆破参数的确定、爆破震动和触地震动的校核以及安全防护措施。     

Brick codes: families,properties, relations

Variable-length word codes, i.e., sets of words such that every word generated has a unique factorization over the set, are a common object of study. Here we are interested in multidimensional words and codes. The multidimensional words are in fact labelled shapes-or labelled polyominoes-and we call them bricks. We begin with basic definitions and properties related to codicity, including a brick version of the well-known Schiitzenberger's theorem. We present several important families of brick codes. We then investigate which families of brick codes can be defined with n-argument relations ("bounded testability"),showing that some of the important non-trivial families do not admit such characterization. We also analyze the structure of the set of relations that do define families of brick codes. We introduce the notion of a chromatic number which is the minimal number of labels necessary to obtain a code from a given set of bricks, and we study its behaviour with respect to the size and"granularity"of brick sets.     

混凝土多孔砖防裂措施的探讨

随着国家节能减排,墙改"禁实限粘"政策的落实,江汉油田房产处开始在改造老区和新建小区进行混凝土多孔砖的试用推广。受混凝土干缩性、密实度、吸水性等特性的影响,验收入住的住宅墙体及室内等处相继出现了大小不同程度的开裂。通过分析研究B型住宅的裂缝成因,提出了改变原料、改进设计、规范施工和加强监督防治措施。经过对已采取防裂措施建筑物的实地回访,砌体外墙开裂等现象得到了有效的控制。