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StructuralEngineering Modeling
India
เข้าร่วมเมื่อ 14 มิ.ย. 2020
Scaling of Ground Motions using SeismoMatch
Detailed procedure to scale the ground motions according to the Indian standard design spectrum using SeismoMatch software.
มุมมอง: 6 481
วีดีโอ
PEER Ground Motions for Time History Analysis
มุมมอง 1K4 ปีที่แล้ว
Detailed procedure to download the ground motions from peer.berkeley. ground motion database.
Nonlinear Time History Analysis of RC Building
มุมมอง 18K4 ปีที่แล้ว
Nonlinear dynamic (time history) of reinforced concrete building frame using SAP2000; El-Centro time history function; Plastic hinge formation; Inter-storey drift.
Nonlinear Static Push Over Analysis of RC Building Frame
มุมมอง 7K4 ปีที่แล้ว
Pushover analysis of reinforced concrete building frame; Definition of plastic hinges; results.
Linear Time History Analysis
มุมมอง 2.7K4 ปีที่แล้ว
Linear time history analysis of RC building frame using SAP2000 - El Centro ground motion
Design of Reinforced Concrete Building Frame
มุมมอง 5K4 ปีที่แล้ว
Seismic analysis and design of RC building frame as per IS 456(2000) and IS 1893-Part 1(2016) using SAP2000. The analysis includes equivalent static and response spectrum methods
Dear Sir..What parameters are needed for the selection of ground motions for the seismic zone-IV (as per IS code) and how can I determine for the Shimla city? Hoping for your kind guidance. Thanks and Regard
TOO FAST
Nice! I want to plot the response of Load combination (E.g. Wind plus Wave) not just a single load case (Wind only). But in the Display -> Show Plot Function, I am unable to find Load Combination I have defined (E.g. 1.3 Wind + 1.2 Wave). Can you please help me with that?
Good
Hi im modeling bridge in csi bridge that s a software like sap and e tabs ...i want to set group of time history analysis for ida analysis but when i set scale factor of 0.1g to 0.8g or even 1.5g in some recorda for examlpe loma prieta record ... the hinges are in the linear phase and there arnt any rotation ...what should i do i need 0.1g to 0.8g rotation hinges for plot fragility curve can you help me?
How to construct response spectrum..... You add spectra in define target.... How to make themmm ......plz tell us....thank you in advance
Sir also make a video on steel frame structure
How Can i contact U Sir
Pl mail me sir
Why did you divide the displacement by 3.5?
Sir, could you make a video about Nonlinear Time History Analysis for steel structure?
sir, how to contact you.
Pl give me your mail iD
@@structuralengineeringmodel486Sir at 23:03 you mistaken by not clicking on Add to Existing load, you keep replace with existing load. in this way, the floor finish load is removed. but, i am ok. i being here, very thankful to you for your video on design
sir, do we need to perform any analysis to show RS in Demand spectrum definition ( Function), for me RS option is not displaying.
You have to define RS spectrum in functions to get the performance point in pushover analysis.
thankyou sir
Thanks for a clear presentation of the video, but in gravity and nonlinear load case, usually we have to choose the mass source 1, but by default, you picked the previous option, is it correct to do?
sir i followed all your steps that you have done in this video with the only difference that I am doing non linear analysis on the 10- storey steel structure. The step where you defined the hinges for concrete frame I have defined for steel but after I run the analysis to see how many hinges have gone into life safety or remained in immediate occupancy my deformed shape for time history only shows deformed shape without the coloured hinges ........
Thank you sir sharing the knowledge of time history analysis..
It is not matching. Also, it is changing the displacement time history significantly
How to get response spectrum before we start the time history analysis in ur explanation 0.20 sec video
sir is this blast load time history analysis
Sir, if the building is 33th floor, how long the time to take for running?
sir please tell me nonlear time history analysis can be done for FLAT SLAB also ??
Thank you so much sir ,I appreciated. would you uploaded a video with base isolator please?
Suppose the time history data says that "in units of g", then what should we put in scale factor? 1 or 9.81?
9.81 if your sap units are meters.
sir please give me el cetro data
Hi can you please explain at 11:31 mins what does number 3.5 refer to?
I think Will be the floor height
sorry sir can i get the software seismomatch cause the link is target spectrum not the software
U can ask to seismomatch software provider... they are issued the academic version of it... U have to provide only your academic mail info...
while defining mass sourse you only consider DL+0.25LL, in DL only wall loads are given. so it is better to select selfwt of elements + DL (wall loasds) + 0.25LL
can you comments on this particular point?
Sir ...load to an monitored displacement magnitude of ..is that target displacement ??
nice video, Can you please explain how you decided total time steps 2688 in time history analysis, also can you please upload similar video using link elements for nonlinear time history analysis instead of plastic hinges, thanks
Nice video Sir. For load pattern Push X and Push Y, whether it should be load pattern(EX and EY) or Acceleration UX/UY respectively Sir?
EX and EY
Respected Sir, If vertical response spectrum is not present in seismic code of design, then out of these two function, which function should be used in linear time history analysis 1) Scaling of vertical ground motion time history as 2/3 of horizontal response spectra. OR 2) Scaling vertical ground motion time history as only horizontal response spectra. Looking for your guidance and support. Thank you.
Generally, we can download acceleration time history functions in all the three directions (two hzl and 1 vcl). In such case, you can use the downloaded vertical ground motion and scale it for the analysis. In the absence of vertical ground motion, use 2/3 of horizontal acceleration time history.
I have ah doubt in this . In YZ plane hinges are not formed that mean collapse not occurred in that plane or else structure is not displaced in that direction ?
As the structure is pushed in x direction (XY plane, considering Y is vertical direction), plastic hinges are formed in beams oriented in that plane. If we run the push over analysis in z direction, the members oriented in the respective direction will get the inelastic response (formation of plastic hinges)
Your videos are nice and explanation are very good. 1)Why are you applying plastic hinges to beam and column? Reason. 2)What will happen if I analyse without plastic hinges in my 40 storey steel building?
1) Pushover analysis is a nonlinear static analysis. To get the nonlinear response of the structure, we should define the plastic hinges [in terms of moment - rotation (M-phi) curve]. Or else, we have to define the stress strain curves of the materials (for instance, concrete for RC frame and Rebar for reinforcements) used in the frame design. In such case, the results of plastic rotation values of the all the members need to be obtained after the analysis. These values have to be verified with the permissible values suggested by various building codes (ASCE41, FEMA356 or ATC40, etc) 2. You wont get the inelastic response if you dont define the plastic hinges. Or, As i said in the first point, you have to define stress-strain curve for the steel material to observe the nonlinear behaviour.
sir how did you create Indian standard response spectrum? and what is target spectrum actually? please reply
drive.google.com/file/d/1nUEwe6FdKoX856A5OTZigz2ykGa1DqBC/view?usp=sharing
Thank you so much sir
@@structuralengineeringmodel486 Sir seismomatch download software drive link? Thanks
Sir, what is the difference between linear and non-linear time history analysis? Is it possible to conduct non-linear time history analysis in Staad Pro?
There are two types of nonlinearities such as material and geometric nonlinearity. Here in the video, i used material nonlinearity for the analysis. For nonlinear time history analysis, nonlinear stress-strain values need to be defined (or plastic hinges) to obtain the nonlinear behaviour of the building. For linear analysis, we define elastic modulus, yield strength (or compressive strength), poisson's ratio. we can not get the inelastic behaviour with these material properties.
sir, I would like to thank you so much for the lecture. sir, May I know why you have chosen p-delta large deflection than the p-delta effect? adding to that.. if time permits can you please upload lecture on nonlinear time history analysis of aluminium frame and steel frame as its cost effect for experimental work.
thank you. please visit this www.eng-tips.com/viewthread.cfm?qid=394025
wiki.csiamerica.com/display/kb/P-Delta+effect
Sir maximum displacement is H/500 ...drift is 4% H.... Where h =ht of bldg....why you hv used drift in place of displacement?
push-over analysis results are based on the performance levels of the structure. There are four performance levels (Immediate occupancy (IO), Life safety (LS), Collapse prevention (CP) and Collape (C)) which based on the inelastic behaviour (i.e. plastic hinge formation). So, the maximum displacement the structure can experience corresponding to collapse state (C) according to FEMA356 is 4% of total height of the structure. Thats why, the said value is defined for the analysis. However, the structure will not be pushed to the defined value (4%H). The analysis will be ended within the 4% itself if the structure is designed properly.
How to optain structure time period from sap
You can get from modal analysis
good job, can you send me the software link.
Can you please provide the steps for non-linear time history analysis of steel structure in ETABS?
From where can I get that el centro.txt file?
Visit peer.berkeley ground motion database
it is present in your database of your computer only Local Disk :C , then Program files then computer and strucutres then Etabs 18 or Etab 16 then time history funtion . you will get all time history file predefined canbe opened in notepad
Could you provide the time history file?