第八期_2011_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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第八期

新型锁口钢板桩围堰在之江大桥施工中的应用

蒋红星，潘江波，叶以挺

２０11年第8期

摘要

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摘要：结合之江大桥水中承台新型锁口钢板桩围堰施工实例，对新型锁口钢板桩围堰施工的工艺原理、设计与布置、钢板桩插打、锁口封堵、围堰内吸砂及封底混凝土浇筑等方面进行了分析研究。结果表明，新型锁口钢板桩围堰可以将侧板的拼装及安装化整为零，使得拼装及下放简单、合拢便捷、封水效果好，是一种水中承台无底围堰施工的新方法。 Abstract: Combining with practical example of new locking steel-sheet pile cofferdam construction of the pile cap in water for Zhijiang bridge, the aspects of process principle, design and layout, driving of steel-sheet piles, locking plugging, absorbing sand in cofferdam and concrete pouring with bottom sealing of new locking steel-sheet pile cofferdam construction are analyzed and studied. The results show that new locking steel-sheet pile cofferdam can be assembled and installed for side bar with the whole into parts, so that it is easy to be assembled, conveniently closured and has good effects on waterseal, which is a kind of new method of cofferdam construction without bottom of the pile cap in water.

基于未确知测度模型的碾压混凝土施工质量评价

刘大江

２０11年第8期

摘要

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摘要：针对RCC施工质量的影响众多因素，依据RCC施工的特点建立了施工质量评价指标体系，以信息熵确定指标权重，采用未确知测度理论构造综合评价模型。实证分析表明，该模型可操作性和适应性强。 Abstract: Based on many factors affecting the construction quality of RCC, a relative index evaluation system of the construction quality of RCC is formed according to the features of the RCC construction. By using the entropy theory to compute every index weight, a comprehensive evaluation model by unascertained measure theory is built. An example demonstrates that this model has the applicability and feasibility.

计算机测温技术在大体积混凝土施工中的应用

李巧玲，王银安

２０11年第8期

摘要

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摘要：以某工程筏板基础混凝土为例，分析了大体积混凝土一次浇灌的可行性，介绍了计算机测温技术在该工程中的应用，解决了测温自动化问题，为信息化施工提供了一个良好手段。 Abstract: For an example as a project of raft foundation concrete, the feasibility for once pouring of mass concrete is analyzed. The applications on computer thermometry technology in this project are introduced, and the problems on automatic thermometry are solved, which provides a good means for informational construction.

基于波折开孔钢板连接件组合梁界面特性有限元分析

陈建兵，赵文娟，尤元宝，力为为

２０11年第8期

摘要

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摘要：波折开孔钢板是一种新型剪力连接件。为了研究设置有波折开孔板连接件的组合梁的界面特性，对具有双排波折开孔钢板连接件的钢-混凝土组合梁进行了有限元模拟，分析计算了混凝土板与钢梁上翼缘交界面处的相对滑移及其分布规律、应变差及其分布规律、波折开孔板连接件及贯穿钢筋的受力情况。对比试验结果表明，波折开孔钢板连接件的抗滑移性能、抗剪性能良好，混凝土板和钢梁具有良好的协同工作性能。 Abstract: The corrugated perforated plate is a kind of new shearing connectors. In order to investigate the interface character of composite beams with corrugated perforated plate, the finite element simulation for steel-concrete composite beams with double-row corrugated perforated plate connectors is carried out. In this simulation, the relative slippage and its distribution regularities, strain difference value and its distribution regularities on the interface for top flange of steel beam and concrete slab, and the force condition of corrugated perforated plate connectors and transfixion reinforced steel in the composite beam are analyzed and calculated. The contrast experimental results show that the anti-slippage and anti-shearing properties of corrugated perforated plate connectors are good, and the concrete slab and steel beam have good joint cooperation performance.

生土墙体材料改性技术研究现状

郑寒英，杨长辉

２０11年第8期

摘要

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摘要：生土墙体材料是以生土为主要原料制备的墙体材料，耐水性能较差、强度较低是制约其应用发展的主要技术问题。本文介绍了生土墙体材料的改性方法与机理，以及不同改性技术对生土墙体材料性能的影响，分析了目前生土墙体材料在研究和应用中存在的问题，提出了进一步研究的建议。 Abstract: The raw soil wall material is a kind of wall material mainly made up with raw soil. Its major?technical?problems are poor water?resistance and low strength. The modification means and mechanism of raw soil wall material are introduced, and the effects of different modification technology on the properties of the raw soil wall material are carried out. The problems on the research and application of the raw soil wall material are analyzed and the suggestions for further study are put forward.

SRC异形柱正截面承载力计算

曲延全

２０11年第8期

摘要

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摘要：为解决SRC异形柱正截面承载力的计算问题，根据有限元计算原理和SRC异形柱的试验研究成果，研发了SRC异形柱正截面承载力的电算程序，并对所研发的电算程序进行了试验验证。验证结果表明，电算结果与试验结果吻合较好，从而证明了电算程序的正确性，为SRC异形柱正截面承载力的计算和受力性能分析提供了工具。 Abstract: In order to calculate the normal section bearing capacity of SRC special-shaped columns, the computer programs are developed according to the finite element calculation principle and the experimental results of SRC special-shaped columns, and the experimental verification is made for the computer programs. The results show that the calculation results of the computer programs totally correspond with the experimental results, which proves the computer programs are correct, and the computer programs provide the tools for calculating the normal section bearing capacity and analyzing the mechanical properties of SRC special-shaped columns.

夹芯砌体弹性模量的试验研究

范飞1，杨光2，黄月玲1，李锋3，胡蕾3

２０11年第8期

摘要

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摘要：作为新型墙材，烧结页岩装饰多孔砖在工程中近年来发展十分迅速，它有着高强、质密等特点，又能保护耕地、节约能源。本文主要分析了用其砌筑的四个强度等级水泥砂浆砌筑的4组24个试件的变形特征，对该砌体弹性模量进行了计算分析，通过数据回归，提出了夹芯砌体弹性模量建议计算公式。 Abstract：As a new wall material, sintering shale decorative porous bricks are developing very rapidly in recent years. The sintering shale decorative porous bricks have the characteristics of high strength, mass density, and they can also protect the farmland and be energy conservation. In this paper, the deformation features of 24 test specimens as 4 groups bricklaying by cement mortar with 4 strength grades are analyzed. The elastic modulus of sandwich composite masonry with sintered shale decorative porous bricks is calculated and analyzed. Through the data regression, the suggested calculation formula for the elastic modulus of sandwich composite masonry is proposed.

聚丙烯纤维混凝土钢筋网壳锚喷技术在动压巷道中的应用

陈红续1，庞建勇1，唐百晓2，金志恒3

２０11年第8期

摘要

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摘要：针对动压失稳巷道的变形特征，提出了在动压巷道中采用聚丙烯纤维混凝土钢筋网壳锚喷支护技术。该新支护结构具有一定的整体可缩性，有较高的承载能力和让压性能。现场监测表明，在不降低支护承载能力的情况下，该支护形式能很好地防止动压变形，具有良好的柔性，是一种优良的动压巷道让压支护结构。 Abstract：Aiming at the the deformation characteristics of dynamic pressure instability for roadway, the supporting technology of reinforced wire-shell bolting shotcrete for polypropylene fiber reinforced concrete in dynamic pressure roadway is proposed. This new supporting structure has a centain retractable proporty in total, higer bearing capacity and yielding property. The on-site monitoring indicates that under the situation of not reducing the bearing capacity for supporing, the supporting form can greatly prevent the dynamic pressure deformation, and has good flexibility, which is a good kind of yielding supporting structure for dymanic pressure roadway.

喷射聚丙烯纤维混凝土在矿业工程中的应用

桑普天，庞建勇，闾沛

２０11年第8期

摘要

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摘要：结合淮南某矿区典型锚喷巷道工程，进行了聚丙烯纤维混凝土喷层抗拉、抗压、抗剪及弯曲性能试验研究和工业试验。结果表明，聚丙烯纤维的掺入大幅度提高了喷层的极限变形量，同时使喷层具有较强的抗弯能力和让压能力。喷射聚丙烯纤维混凝土施工工艺简单，回弹率低，喷层成形较好，可增加一次喷射厚度，减少复喷量，有利于提高施工效率。 Abstract: Combining with a typical project for anchor spraying roadways in Huainan mining area, the test researches and industrial tests for tensile strength, compressive strength, shear strength and flexural property with shotcrete layer for polypropylene fiber reinforced concrete are accomplished. The results indicate that shotcrete layer for polypropylene fiber reinforced concrete can greatly increase the ultimate deflection of shotcrete layer, at the same time, shotcrete layer has greater flexural capacity and yielding capacity. The process of spraying polypropylene fiber reinforced concrete construction is easy, rebound rate is low, and the foundation of shotcrete layer is good, which can add the once thickness of spraying and reduce the content of combined injection, which is useful for improving the construction efficiency.

新型高性能混凝土复合锚垫板的性能研究

朱星1，朱万旭2，周红梅2

２０11年第8期

摘要

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摘要：针对锚固体系的结构安全性，利用三维有限元法建立模型，通过对M15ZH-9D型号高性能混凝土复合锚垫板与M15E-9DT型号传统铸铁锚垫板的受力分析比较，结果表明，高性能混凝土复合锚垫板强度不低于传统铸铁锚垫板。结合工程实际，并根据M15ZH-9D型锚垫板荷载传递试验结论和锚固区混凝土局部受压应力分布规律，为锚垫板结构优化和成本降低提供了理论基础。 Abstract: According to the structure safety of the anchorage system, utilizing the 3D finite element method to establish the model, through the comparison analysis on the stress between the high performance concrete (HPC) composite anchor plate (M15ZH-9D) and the traditional cast iron anchor plate (M15E-9DT), it is concluded that the strength of the HPC composite anchor plate is not less than that of traditional cast iron anchor plate. Combined with the engineering practice, according to the load transfer test conclusion of the M15ZH-9D anchor plate and the distribution rule of the concrete local stress in anchorage zone, the theoretical basis for the structure optimization of the anchor plate and cost reduction is provided.

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