www.gusucode.com > matlab非线性混凝土模型计算分析源码程序 > main_a20.m
%该程序为主程序
clear;%清除工作空间变量；
clc;format compact;format long g;
%per=[0:0.2:1.0 1.5:0.5:2 3:1:6];%设定自振周期范围,分别采用不同的密度；
per=0:0.2:6;
sp=length(per);
%采用不同的屈服强度系数；
ebx(1)=0.167;
ebx(2)=0.2;
ebx(3)=0.25;
ebx(4)=0.333;
ebx(5)=0.5;
for iy=1:5
eb=ebx(iy);
%=加载地震波=-------------------------------------------------------------------
%next one 192
fida(1)=fopen('e:/berkleywave/northridgenew/nor_php270_a.txt','r+');
fidv(1)=fopen('e:/berkleywave/northridgenew/nor_php270_v.txt','r+');
%next one 219
fida(2)=fopen('e:/berkleywave/northridgenew/nor_sar000_a.txt','r+');
fidv(2)=fopen('e:/berkleywave/northridgenew/nor_sar000_v.txt','r+');
%next one 220
fida(3)=fopen('e:/berkleywave/northridgenew/nor_sar270_a.txt','r+');
fidv(3)=fopen('e:/berkleywave/northridgenew/nor_sar270_v.txt','r+');
%next one 227
fida(4)=fopen('e:/berkleywave/northridgenew/nor_scs052_a.txt','r+');
fidv(4)=fopen('e:/berkleywave/northridgenew/nor_scs052_v.txt','r+');
%=加载地震波=-------------------------------------------------------------------
um=zeros(1,sp);
rm=zeros(1,sp);
nw=4;
ztd=0;zacv=0;
for i=1:nw
tag=0.;tvg=0.;ag=0.;vg=0.;
for di=1:5
aline=fgetl(fida(i));
vline=fgetl(fidv(i));
if(di==4)
dt=fscanf(fida(i),'%f',[1 inf]);
end
end
ag=fscanf(fida(i),'%f',[1 inf])*9.81;
vg=fscanf(fidv(i),'%f',[1 inf])/100;
status=fclose(fida(i));status=fclose(fidv(i));
st=length(ag);%
at=dt*(st-1); %总时间为at；
t=0:dt:at;
cmag=max(abs(ag));
%ag=ag*2.2/cmag;%%%为和肖结果比较，特添加；
ag=ag*0.4*9.81/cmag;;%%%和CHAI比较，假定为0.4g，调整mvg；
vg=vg*0.4*9.81/cmag;
mag=max(abs(ag));mvg=max(abs(vg));
acv=mag/9.81/mvg;
zacv=zacv+acv;
tc=2*pi*2.0/2.5*mvg/mag;%计算场地特征周期Tc；cv=2.0;ca=2.5;
%%%&***&***能量分析应采用相同震级地面运动加速度进行标准化；
%%%计算强震时间td;td=t0.95-t0.05;
ia=zeros(1,st);
for m=2:st
ia(m)=ia(m-1)+pi/2/9.81*(ag(m-1)^2+ag(m)^2)*dt/2;
end
iac1=0.1;
iac2=0.1;
for n=1:st
ia1=abs(ia(n)/ia(st)-0.05);
ia2=abs(ia(n)/ia(st)-0.95);
if(ia1<iac1)
iac1=ia1;
t1=(n-1)*dt;
end
if(ia2<iac2)
iac2=ia2;
t2=(n-1)*dt;
end
end
td=t2-t1;
ztd=ztd+td;
%%%做线弹性计算；
para1=1;
[rd1,ad1,rv1,av1,ra1,aa1]=response_l(para1,per,ag,dt,at);
% figure(1)
% mesh(per,t,ad1) %绘制出绝对位移时频反应谱图；
% grid on
% xlabel('周期 / 秒');
% ylabel('时间 / 秒');
[row,rank]=size(aa1);
sa=zeros(1,rank);
for ri=1:rank
for rj=1:row
if (abs(aa1(rj,ri))>sa(ri))
sa(ri)=aa1(rj,ri);%弹性加速度反应谱sa（最大绝对加速度反应）；
end
end
end
%%%做弹塑性计算；
para1=1;
[u1,nrd1,nad1,nrv1,nav1,nra1,naa1,rep]=response_n(para1,sa,per,ag,dt,at,eb);
% figure(2)
% mesh(per,t,nad1) %绘制出弹塑性位移时频反应谱；
% grid on
% xlabel('周期 / 秒');
% ylabel('时间 / 秒');
um1=zeros(1,sp);
for np=1:sp
for nt=1:st
if (abs(u1(nt,np))>um1(np))
um1(np)=abs(u1(nt,np));
end
end
end
um=um+um1;
rm=rm+rep;
end
um=um/nw;
rm=rm/nw;
ptd=ztd/nw;pacv=zacv/nw;
%%%输出td和a/v数据到硬盘；
save('e:\north_concrete\a20\pingjinzhi.txt','ptd','pacv','-ASCII')
if(iy==1)
figure(1)
plot(per(2:sp),um(2:sp),'kd-.') %绘制出弹塑性位移延性反应谱；
grid on
xlabel('周期T(s)');
ylabel('位移延性系数u');
title('弹塑性位移延性反应谱');
hold on;
figure(2)
%%%输出数据到硬盘；
save('e:\north_concrete\a20\em_a20_1.txt','rm','-ASCII')
plot(per,rm,'kd-.') %绘制出累积滞回耗能谱；
grid on
xlabel('周期T(s)');
ylabel('滞回耗能Eh(J/kg)');
title('弹塑性滞回耗能谱');
hold on;
elseif(iy==2)
figure(1)
plot(per(2:sp),um(2:sp),'kh-.') %绘制出弹塑性位移延性反应谱；
hold on;
figure(2)
%%%输出数据到硬盘；
save('e:\north_concrete\a20\em_a20_2.txt','rm','-ASCII')
plot(per,rm,'kh-.') %绘制出累积滞回耗能谱；
hold on;
elseif(iy==3)
figure(1)
plot(per(2:sp),um(2:sp),'ko-.') %绘制出弹塑性位移延性反应谱；
hold on;
figure(2)
%%%输出数据到硬盘；
save('e:\north_concrete\a20\em_a20_3.txt','rm','-ASCII')
plot(per,rm,'ko-.') %绘制出累积滞回耗能谱；
hold on;
elseif(iy==4)
figure(1)
plot(per(2:sp),um(2:sp),'kp-.') %绘制出弹塑性位移延性反应谱；
hold on;
figure(2)
%%%输出数据到硬盘；
save('e:\north_concrete\a20\em_a20_4.txt','rm','-ASCII')
plot(per,rm,'kp-.') %绘制出累积滞回耗能谱；
hold on;
else
figure(1)
plot(per(2:sp),um(2:sp),'ks-.') %绘制出弹塑性位移延性反应谱；
hold on;
figure(2)
%%%输出数据到硬盘；
save('e:\north_concrete\a20\em_a20_5.txt','rm','-ASCII')
plot(per,rm,'ks-.') %绘制出累积滞回耗能谱；
hold on;
end
end