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Reinforcement design of anchor blocks for external tendons

Hong Hao,Tong Yuqiang ,He Zhiqi,Liu Zhao

Strategic Study of CAE 2013, Volume 15, Issue 8, Pages 95-98

Abstract:

Reinforced blocks are common anchorage forms for external tendons. However, there was no mature design method. Through finite element analysis, the paper revealed that the tensile stress concentration was caused by three typical local actions. On this basis, three equations for calculating resultant forces of these local actions were formulated. Thus a quantitative reinforcement design method of anchor blocks was proposed. Finally, an anchor block of the Fourth Nanjing Yangtze River Bridge was presented as a design example to demonstrate the effectiveness and convenience of the proposed method.

Keywords： anchor block external prestressing reinforcement design bursting force cantilever action tie-back

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and floor hydrogeology conditions evaluation of Pingshuo No.1 mine and measures of preventing water bursting

Zhang Zhongwen,Wu Qiang,Fu Enjun,Fan Zhenli

Strategic Study of CAE 2011, Volume 13, Issue 11, Pages 94-101

Abstract: of Pingshuo No.1 coal mine roof and floor, the paper ascertains relevant factors of coal mine water burstinganalyzing the mining and geology conditions, and evaluates the roof hydrogeology conditions and floor water bursting

Keywords： three maps method vulnerability index method water hazards of coal mine prevented measures of water hazards

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A new photosensitive neuron model and its dynamics Research Articles

Yong Liu, Wan-jiang Xu, Jun Ma, Faris Alzahrani, Aatef Hobiny,hyperchaos@163.com,hyperchaos@lut.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 9, Pages 1387-1396 doi: 10.1631/FITEE.1900606

Abstract: Biological neurons can receive inputs and capture a variety of external stimuli, which can be encoded and transmitted as different electric signals. Thus, the membrane potential is adjusted to activate the appropriate firing modes. Indeed, reliable s should take intrinsic biophysical effects and functional encoding into consideration. One fascinating and important question is the physical mechanism for the transcription of external signals. External signals can be transmitted as a transmembrane current or a signal voltage for generating action potentials. We present a model to estimate the nonlinear encoding and responses of neurons driven by external optical signals. In the model, a (phototube) is used to activate a simple FitzHugh-Nagumo (FHN) neuron, and then external optical signals (illumination) are imposed to excite the for generating a time-varying current/voltage source. The -coupled FHN neuron can therefore capture and encode external optical signals, similar to artificial eyes. We also present detailed analysis for estimating the mode transition and firing pattern selection of neuronal electrical activities. The sampled time series can reproduce the main characteristics of biological neurons (quiescent, spiking, , and even chaotic behaviors) by activating the in the neural circuit. These results could be helpful in giving possible guidance for studying neurodynamics and applying neural circuits to detect optical signals.

Keywords： Photosensitive neuron Neuron model Bifurcation Bursting Photocell