13春学期《桥梁工程》在线作业3（13 spring term bridge project online homework 3）.docVIP

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13春学期《桥梁工程》在线作业3（13 spring term bridge project online homework 3）.doc

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13春学期《桥梁工程》在线作业3（13 spring term bridge project online homework 3）

13春学期《桥梁工程》在线作业3（13 spring term bridge project online homework 3） 14 Northeastern University spring 13 autumn East 13 spring semester bridge engineering online homework 3 Total score: 100 test time: - RadioButtonList RadioButtonList, (a total of 20 questions, a total of 100 points.) 1. to check the strength of bare arch is (because). A. uses the de frame construction method The B. coefficient of arch axis is too large The C. ring is easy to instability D. naked arch size Score: 5 points 2. - grade II Highway Lane load uniform load standard value (kN/m). A. 10.5 B. 7.875 C. 8.4 D. 7.35 Score: 5 points 3. for the multi column pier, the beam can be approximated by (calculation). A. beam B. cantilever beam C. continuous beam D. frame Score: 5 points Four When the foundation is weak, and the covering layer is deep, the load when the foundation type should not be used (is). A. Rigid foundation B. pile C. column D. open caisson Score: 5 points The following 5. bars cannot be used to shear resistance (is). A. vertical prestressed reinforcement B. longitudinal prestressed reinforcement C. transverse prestressed reinforcement D. common bended bar Score: 5 points 6. when the bend radius of curve bridge is equal to or less than (m), considering the centrifugal force of the vehicle load. A. 150 B. 200 C. 250 D. 300 Score: 5 points The 7. general construction method of long-span cable-stayed bridges (is). A. segmental cantilever balance construction B. by hole construction C. pushing construction method D. Swivel Construction Score: 5 points 8. reinforced concrete beams of concrete protective layer thickness is (). The beam surface distance A. stirrups in surface B. main bar of the outer surface to the beam surface distance C. main reinforcement section center to beam surface distance D. hoop section center to beam surface distance Score: 5 points 9. for the arch bridge, its span is (net). A. on the navigable water level of two adjacent piers (or abutment) spacing between B. two