Đang chuẩn bị liên kết để tải về tài liệu:
Problem Z - Response Spectrum Analysis

The building is a four-story concrete shear wall building with concrete flat slabs supported by concrete columns. There is a 30 foot high steel flagpole on the roof at one corner of the building. A 250 pound man sits on top of the flagpole. | Problem Z Response Spectrum Analysis Building Description The building is a four-story concrete shear wall building with concrete flat slabs supported by concrete columns. There is a 30 foot high steel flagpole on the roof at one corner of the building. A 250 pound man sits on top of the flagpole. 25 35 40 20 1 1 1 30 i 30 Y 1 1 1 120 Ô X Ô CM Flagpole 120 Typical Floor and Roof Plan Steel E 29000 ksi Poissons Ratio 0.3 Flagpole is 3 0 standard pipe Concrete E 3600 ksi Poissons Ratio 0.2 Walls are 12 thick Columns beams are 20 x 20 Floors roof are 10 thick flat slab Response Spectrum Loading X-Dir U1 1994 UBC S2 Y-Dir U2 30 of 1994 UBC S2 Assumptions Diaphragms are rigid in plane. Columns are fixed base. Consider the mass of the 250 pound man which is 0.00065 kip-sec2 in. To Do Determine maximum X-direction U1 displacement at top and bottom of the flagpole for the specified response spectrum loading. Three Dimensional Perspective View Note Our intent is that you try this problem on your own first. After you have solved it on your own you can step through our solution if desired. If you have problems trying to create the model then follow the steps in our solution. 1 Problem Z Solution 1. Click the drop down box in the status bar to change the units to kip-ft. Kip-ft 30 2. From the File menu select New Model From Template. This displays the Model Templates dialog box. 3. In this dialog box click on the Space Frame template button to display the Space Frame dialog box. AAA 4. In this dialog box Type 4 in the Number of Stories edit box. Type 4 in the Number of Bays Along X edit box. Type 4 in the Number of Bays Along Y edit box. Accept the default Story Height 12. Type 30 in the Bay Width Along X edit box. Type 30 in the Bay Width Along Y edit box. Verify that the Restraints and Gridlines check boxes are checked. Click the OK button. 5. From the Draw menu select Edit Grid. to display the Modify Grid Lines dialog box. 6. In this dialog box Check the Glue Joints To Grid