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Timber-Lightweight Aggregate Composite Floor Structure

机译：轻质骨料复合地板结构

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摘要

Nowadays, composite structures based on wood are frequently used. In civil engineering, mostly timber-concrete composite structures are used, particularly in reconstruction of old timber girder floor structures or manufacture of new ones at the reconstruction of old buildings in areas exposed to frequent earthquakes. In new buildings it is mainly glued laminated timber or lumber, while in reconstruction square timber is used. A timber beam is coupled with a concrete slab made either of conventional or a lightweight concrete. Best results are achieved by coupling timber with lightweight aggregate concrete that has all the properties similar to the timber except for its strength that is much higher and comparable to that of conventional concrete.This paper analyzes a composite timber-lightweight aggregate concrete structure. The basic girder is a T-cross section, with the web made of glulam, and flange made of lightweight concrete with expanded clay aggregate (Liapor). The two materials are coupled by means of mechanical fasteners, allowing joint action of the composite section. Quality of coupling has been determined by experimental tests carried out at the Laboratory of the Technical Mechanics Institute, Faculty of Civil Engineering in Zagreb. Finite element method was used for modelling of composite structures using ABAQUS software.The aim of this study was to determine the advantages of using timber-lightweight aggregate concrete composite structure, compared to solutions in which timber-conventional concrete composite structure or reinforced concrete slab are used.
机译：如今，基于木材的复合结构已被广泛使用。在土木工程中，主要使用木材-混凝土复合结构，特别是在旧木梁楼板结构的重建中或在地震频发地区重建旧建筑物时制造新的结构。在新建筑中，它主要是胶合层压木材或木材，而在重建中，则使用方形木材。木梁与常规或轻质混凝土制成的混凝土板连接。木材与轻质骨料混凝土的结合可以达到最佳效果，轻质骨料混凝土的所有性能都与木材相似，但强度要远高于常规混凝土。基本的梁为T形截面，腹板由胶合层制成，法兰由轻质混凝土制成，并带有膨胀的粘土骨料（Liapor）。两种材料通过机械紧固件连接，从而允许复合材料部分共同作用。耦合的质量已经通过萨格勒布土木工程学院技术力学研究所的实验室进行的实验测试确定。使用有限元方法对使用ABAQUS软件的复合结构进行建模。本研究的目的是确定使用木材-轻集料混凝土复合结构的优势，与使用木材-常规混凝土复合结构或钢筋混凝土板的解决方案相比用过的。

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