3—performance of hsc columns under combined axial load and bending moment

Rapid repair of severely damaged RC columns under combined loading of flexure, shear, and torsion with externally bonded CFRP

Ngày tải lên : 12/05/2017, 22:38

... 3, and were subjected to constant axial load and a combined cyclic loading effect of uniaxial cantilever bending, shear, and torsion, with torsional moment- to-flexural moment ratios (T/M) of ... been tested to failure under constant axial load (7% of the axial capacity) and combined cyclic lateral and torsional loading with different bending moment- to-torsional moment ratios (T/M) With ... illustrated that the responses and failure modes of RC columns under combined axial, shear, bending, and torsional loading are highly complex and are affected by the member geometry and sectional details...

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A study on improving the performance of control charts under non normal distributions

Ngày tải lên : 26/09/2015, 10:34

... values of M j , estimate the median, the mean and the mean of the log of the distribution of the sample-median Repeat these same calculations for the distributions of the sample-mean and the ... m + 2λ m + 2λ , and variance m+λ m+λ From a theorem due to Fieller, if X and Y are normally and independently distributed with means m x and m y and standard deviations σ x and σ y respectively, ... X = X − A2 R and UCL R = D4 R (3.2) LCL R = D3 R In the above, X is the mean of all observations and R is the average of the ranges The values of A2, D3 and D4 are taken from standard tables...

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Protocol for Conducting Environmental Compliance Audits of Storage Tanks under the Resource Conservation and Recovery Act pdf

Ngày tải lên : 06/03/2014, 23:20

... if it meets a performance standard of detecting a leak of 0.2 gallons per hour with a probability of detection of at least 95 percent and a probability of false alarm of no more than percent Regulatory ... probability of detection of at least 95 percent and a probability of false alarm of no more than percent Simply stated, this means that, of I00 tests of USTs leaking at the specified rate, at least 95 of ... Environmental Compliance Audits of Storage Tanks under RCRA Cathodic Protection Tester A person who can demonstrate understanding of the principles and measurements of all common types of cathodic protection...

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Báo cáo nghiên cứu nông nghiệp " Improving the performance of the fruit industry in Tien Giang and Tra Vinh provinces " ppt

Ngày tải lên : 22/06/2014, 13:20

... material to meet market demand QA standards and workshop notes produced standard of English and technical competence on part of SOFRI Project Officer Practical orientation of Australian team members ... extension officers and returned to Vietnam to participate in workshops for each of the farmer groups in conjunction with Associate Professor Chamala and Mr Truyen of SOFRI This course of action ... the project and the partner institution and heightened the responsibilities and workload of the central figure The translations provided were generally of high standard Generally, SOFRI has a...

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Báo cáo lâm nghiệp: "Eﬀects of soil mechanical treatments combined with bramble and bracken control on the restoration of degraded understory in an ancient beech forest" pptx

Ngày tải lên : 07/08/2014, 16:20

... design of soil and vegetation treatments in the four studied stands Empty columns are control strips Shaded areas show strips that are absent in some stands Experimental strips and date of treatment ... and mixes the vegetation together with subjacent humus and mineral horizons down to a depth of 30 cm It consists of a series of blades mounted on a revolving power-driven shaft The diameter of ... the quality of tillage experiments, and was implemented by means of a brush cutter, i.e a tool with a horizontal blade with a cutting capacity of 1m in diameter that cuts undergrowth and brush...

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Báo cáo khoa học: "Performance of vegetatively propagated Larix decidua, L kaempferi and L laricina hybrids" pdf

Ngày tải lên : 08/08/2014, 23:22

... either of clone sampling or of the species themselves Testing on more sites and of other clones from a wider range of hybrid families should be undertaken to confirm these early results and to ... material, and secondly, to study the feasibility of the technique Ortets of the different larch hybrids and of tamarack were selected for total height at years in a progeny test The proportion of ortets ... marginal sum of observations for species i j X.= marginal sum of observations for score j, k = number of species in comparison, ij x = and = n= number of scores, N = total number of observations...

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Báo cáo y học: " Number of addictive substances used related to increased risk of unnatural death: A combined medico-legal and case-record study" pps

Ngày tải lên : 11/08/2014, 17:20

... Board of Forensic Medicine approved the study Statistics A Pearson chi-square and a trend test were used to compare additional number of drugs and types of death Results Type of death and contact ... initiated and designed the study and was helpful in the drafting of the manuscript PL initiated and designed the study and was helpful in the drafting of the manuscript LB drafted the manuscript and ... J: Severity of dependence and route of administration of heroin, cocaine and amphetamines British Journal of Addiction 1992, 87:1527-36 Darke S, Hall W: Heroin overdose: research and evidencebased...

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modeling of chloride penetration onto concrete structures under flexual cyclic load and tidal environment

Ngày tải lên : 13/11/2014, 06:10

... Predictions of relationships of crack length and number of cycles, M1 .78 Figure 4.5 Predictions of relationships of crack length and number of cycles, M2 .78 Figure 4.6 Predictions of relationships of ... structures under flexural cyclic load and tidal effect, in which effects of the flexural cyclic load, in terms of number of cycles and load level, on the chloride diffusion coefficient and the chloride ... concrete beam under fatigue, effect of cyclic on chloride diffusion coefficient, and chloride profiles of concrete under different load level of cyclic load and different exposed time This model...

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Modeling of chloride penetration onto concrete structures under flexual cyclic load and tidal environment

Ngày tải lên : 22/06/2016, 16:37

... theoretical analysis and experiments of chloride diffusion test, chloride content test and flexural cyclic loading test Flexural cyclic load is applied from 50% to 80% of to ultimate bending load Fictitious ... DEVELOPMENT OF MODEL .28 2.1 Prediction of mechanical and physical properties of concrete 28 2.2 Fatigue and fatigue deformation of plain concrete beam under flexural cyclic load ... STRUCTURES UNDER FLEXURAL CYCLIC LOAD AND TIDAL ENVIRONMENT 74 4.1 Designed mechanical and physical properties of concretes 74 4.2 Prediction of fatigue crack growth under flexural...

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modeling of frp-jacketed rc columns subject to combined axial and lateral loads

Ngày tải lên : 13/11/2014, 10:03

... Idealized-yield moment Mb Moment at column bottom Mc Moment at column mid-height Mt Moment at column top Mcr Cracking moment My First-yield moment Mu Ultimate moment P Axial load P0 Initial axial load Pi1 Axial ... stress of concrete fto Modulus of rupture of concrete fs Stress of steel fsy Yield stress of steel fsu Ultimate stress of steel gap Gap between jacket and footing and load stub h The length of the ... axial load Pi1 Axial load at first yield state Pi2 Axial load at second yield state Pmax Maximum axial load Pu Ultimate axial load Q Total lateral load Qi1 Total lateral load at first yield state...

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PERFORMANCE OF A COMBINED CONSTRUCTED WETLAND SYSTEM FOR TREATING VILLAGE SEWAGE IN LAKE DIANCHI VALLEY

Ngày tải lên : 05/09/2013, 08:40

... flux and time curve The result is shown in Table The total load of stormwater received by system was 4408 m3 The removal amounts of COD, TN, NH4+-N and TP were 273Kg, 14.1Kg, 6.7Kg and 7.3Kg, and ... effect of ecological system The area was 2000 m2 and hydraulic loading rate was 4cm/d in the free-surface constructed wetland, in which the 20-30cm depth of free water was kept above the bottom and ... pond The overlook of completed constructed wetland system was shown in Fig - 50 - Journal of Water and Environment Technology, Vol.2, No.2, 2004 Fig The overlook of constructed wetland system Operation...

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Dynamic performance of bridges and vehicles under strong wind

Ngày tải lên : 16/06/2014, 09:30

... encouragement and support Thanks are also extended to my other committee members: Professor Dimitris E Nikitopoulos of Mechanical Engineering, Professor Jannette Frandsen of Civil Engineering, and Professor ... Caribbean and typhoons in the South China Sea and off the northwest coast of Australia (Holmes, 2001) Thunderstorm: Thunderstorms are capable of generating severe winds, through tornadoes and downbursts ... a span length of 3,300 m is under design and Gibraltar Straits Crossing with a span length of 5,000 m is under discussion Lighter and more aerodynamically profiled cross sections of decks are...

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Báo cáo lâm nghiệp: "Interactive effects of irradiance and water availability on the photosynthetic performance of Picea sitchensis seedlings: implications for seedling establishment under different management practices" ppt

Ngày tải lên : 08/08/2014, 00:22

... ability and light requirements of different species [31, 32] Although the impacts of water deficits may be less under shaded conditions, because of a lower evaporative demand, the amount of soil ... concentrations, under both water limited and waterlogged conditions [9, 27] Photosynthesis would also be inhibited due to the increased participation of competing pathways and consumption of electrons and ... glasshouse under exposed and shaded conditions The primary aim was to examine the impact of interactions between water availability and irradiance in order to provide a more comprehensive understanding...

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Báo cáo toán học: "quality and field performance of Douglas fir seedlings under varying degrees of water stress" potx

Ngày tải lên : 08/08/2014, 14:21

... consisted of 62 % coarse sand, 26 % fine sand, % loam and % clay The 20-cm upper layer of soil had % of organic matter, a pH of 5.8 and a cationic exchange capacity of 6.4 meq/100 g fine soil The main ... (FW) and after (DW) drying at 105 °C for 24 h RMC was expressed as a ratio of weight of water to dry weight of roots: Root diameters for sampling were specified by Mc [22] for REL and Sharpe and ... assessment of seedling lots at planting For each of the 12 seedling lots, a sample of 12 was taken at random at the time of planting Each seedling lot sample was labelled, put in plastic bags and stored...

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Báo cáo khoa học: "Performance of young jack pine trees originating from two different branch angle traits under different intensities of competition" ppt

Ngày tải lên : 08/08/2014, 14:22

... Kalra and Maynard [21] 2.3 Growth analyses Morphological measures of crown development and measures of performance or efficiency as described by Brand [5], Hunt [18, 19] and Margolis and Brand ... mass of the entire stem and of all the branches was determined Then, pieces from different sections of the stem and branches from different sections of the crown representing about 20% of the ... (dbh) or stem height at ages T2 and T1; D1 and D2 = dbh at ages T2 and T1; F2 and F1 = needle biomass at ages T2 and T1; N2 and N1 = tree nitrogen content at ages T2 and T1 Name Abbreviation Definition...

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Báo cáo khoa học: "Gas exchange and water relations of 3 sizes of containerized Picea mariana seedlings subjected to atmospheric and edaphic water stress under controlled conditions" pps

Ngày tải lên : 08/08/2014, 19:21

... susceptibility of the seedlings to water stress; and 2) to determine the relative importance of soil and atmospheric drought in the generation of drought stress in the seedlings MATERIALS AND METHODS ... effect of treatment conditions at or near equilibrium, the effects of treatments were evaluated by performing an analysis of variance on the data obtained on days and of treatment only Of the ... Sciences and Engineering Research Council of Canada, and the CRBF, Université Laval Örlander G, Due K (1986) Location of hydraulic resistance in the soil-plant pathway in seedlings of Pinus...

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Behaviour of Single Piles under Axial Loading Hành vi của cọc đơn dưới tác động của tải dọc trục

Ngày tải lên : 04/06/2015, 11:27

... that analyse the behaviour of single piles under axial loading: the Poulos and Davis method and the Randolph and Wroth method This review focuses in settlement and load transfer mechanisms Results ... Shaft load by layer of soil and total applied load, obtained by Plaxis 88 Figure 5.26: Total load, load transferred to the pile shaft and load transferred to the pile base in terms of the ... load, load transmitted to the pile shaft and load transmitted to the pile base in terms of the settlement at the pile top, for smooth and rough interfaces 56 Figure 4.8: Total load, load...

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Comprehensive molecular dynamics simulations of carbon nanotubes under axial force or torsion vibration and new continuum models

Ngày tải lên : 09/09/2015, 11:19

... Influence of Ts on critical buckling load 55 Table 3.1: MD buckling results for armchair SWCNTs under axial load 75 Table 3.2: MD buckling results for zigzag SWCNTs under axial load ... 101 Figure 4.16: Effect of θ and twist direction on cr and Mcr Filled symbols denote cr and Mcr values under clockwise torsion and open symbols denote cr and Mcr values under anticlockwise torsion ... load (Pcr) and buckling strain (cr) of CNT depend on length (L), diameter (D), wall number, and θ of SWCNT We show that the Pcr and cr of zigzag SWCNT are greater than the Pcr or cr of its armchair...

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FRP confined capsule shaped columns under axial and lateral loading

Ngày tải lên : 09/09/2015, 18:52

... Figure 4.27 Moment- curvature profiles of columns under pushover loading Figure 4.28 Moment- curvature profile of column L-0.19-2 from pushover and cyclic test Figure 4.29 Comparison of theoretical, ... Height of the cantilever column Lp Plastic hinge length of column M Flexural moment at failure Mu Ultimate moment My Yield moment n Number of ply of FRP sheets P Applied axial load Pconf Axial load ... FRP-confined columns under axial and lateral loading have been reviewed and discussed in the following sections 2.2 FRP-confined columns under axial loading In recent years, the effectiveness of FRP...

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Dynamic performance of bridges and vehicles under strong wind

Ngày tải lên : 12/10/2016, 14:57

... other committee members: Professor Dimitris E Nikitopoulos of Mechanical Engineering, Professor Jannette Frandsen of Civil Engineering, and Professor Jaye E Cable of Oceanography & Coastal Sciences ... Caribbean and typhoons in the South China Sea and off the northwest coast of Australia (Holmes, 2001) Thunderstorm: Thunderstorms are capable of generating severe winds, through tornadoes and downbursts ... a span length of 3,300 m is under design and Gibraltar Straits Crossing with a span length of 5,000 m is under discussion Lighter and more aerodynamically profiled cross sections of decks are...

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