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After hundreds years damage, the disease of stone structure member is very severity, and so structure reinforcement has great significance. In this paper, the bending capacity of stone member reinforced with CFRP is studied through the test combined with the protective project of Huangsong Stele. The tests totally have six stone beams to study the mechanics performance and damage model of original and reinforced stone beam. The bending capacity theory of reinforced beam is discussed. The study results revealed that the bending performance of stone beam reinforced with CFRP can ameliorate greatly, and the destroy model change from brittle failure of normal section to ductile failure of oblique section, and the bend-resisting capacity of stone beam reinforced with CFRP can be enhanced greatly. But the enhanced range isnt direct proportion with the dosage of CFRP. The calculate formula of bending capacity got from theory deduce joint the test result, so it can be used to guide the design of fact project. So, the reinforcement of stone bending beam with CFRP have well effect.

This paper rushes from unit to surge to make in the theoretical intension of function the unified theory and method that signal divides into to fold , this theory is normalized more , is clear.

The structural damages, which result from the inadequate bearing capacity or the asymmetric support of foundation, are one of the crucial works in the conservation of historical masonry constructions. A new underpinning technique, applying the principle of pipe-jacking, is presented in this paper, which can build a new foundation system having sufficient rigidity under the bearing wall of the upper building. The technique has been successfully used in the conservation practices of masonry constructions, but the basic problems involved in the technique has not yet studied. Based on the field test, the principle of the underpinning by manual pipe-jacking , the mutual effect mechanism between box girders and soil, the calculation of jacking force and its influence factors are investigated in detail, and the empirical formula of calculating jacking force is also presented.

Z-pins reinforced 2D ceramic matrix composites (CMCs), integratedly designed new materials, are developed to enhance 2D CMCs through-thickness in the form of Z-pins and to ensure significant increase in interlaminar fracture toughness, delamination resistance and impact resistance, and Z-pins reinforced 2D CMCs have much application. Finite element method was adopted to analyze stress distributions of Z-pins reinforced woven CMCs; the interlaminar shear tests were employed to measure interlaminar shear strength; fractographies were observed to examine failure mechanisms. The results are shown as the following: the insertion of Z-pins reduces concentrated stress fields and enhances the uniform stress distribution on the expected fracture plane. Interlaminar shear strength of Z-pins reinforced woven CMCs is increased as Z-pins insertion reaches a certain number. Interlaminar shear strength goes up with the rise of the number of inserted Z-pins. Z-pins shearing and fabric/matrix debonding are interlaminar failure mechanisms of Z-pins reinforced CMCs.

The structural damages, which result from the inadequate bearing capacity or the asymmetric support of foundation, are one of the crucial works in the conservation of historical masonry constructions. Firstly ,the box girders are slowly and evenly jacked by the manual pipe jacking technique ,and then casting the core beam to form a whole, so the construction is gradually situated on a "tray" with sufficient rigidity. Consequently, the structural damages caused by the inadequate bearing capacity or the asymmetric support of foundation is thoroughly treated. Based on the field test, the principle of the underpinning by manual pipe-jacking , the mutual effect mechanism between box girders and soil, the calculation of jacking force and its influence factors are investigated in detail, and the empirical formula of calculating jacking force is also presented.

The orbital period variation of the RS CVn-type binary system WW Dra was studied based on all available times of light minima. We confirmed that the orbital period of the binary shows a cyclical change with a large amplitude of 0.2495 days. We discussed in detail the mechanisms that could explain the period change of the system, especially the light-travel time orbit of a tertiary component or magnetic activity cycle. Of these two mechanisms, we find that the latter is more plausible.

The (COCl)2/Hantzsch ester is found to be an effective system for the metal-free reduction of tertiary phosphine oxides. The reaction proceeds under mild conditions, and is applicable to triarylphosphine oxides and alkyldiarylphosphine oxides to produce the corresponding tertiary phosphines in good to excellent yields.