川大《建筑結(jié)構(gòu)設(shè)計(jì)(ⅰ)》春在線作業(yè)（Sichuan building structures design (I) spring online homework ）

1、川大建筑結(jié)構(gòu)設(shè)計(jì)()141213春在線作業(yè)1（Sichuan building structures design (I) 1412 13 spring online homework 1）Sichuan building structures design (I) 1412 13 spring online homework 114, spring, 13 autumn, there are papers total score: 100 test time: -Radio examinationRadio examination questions (50 questions, 100 p

2、oints)1. any of the following items is beyond the limit of serviceability?Under the load design value of A., the steel bar of the tension member of the axle has reached the yield strengthUnder the load standard value, the crack width in the beam exceeds the limit value of B.The partial compression o

3、f the concrete under the backing plate of the C. crane beam is not enoughThe D. component is out of stabilityFull marks: 22. when carrying on the normal section bearing capacity calculation of reinforced concrete rectangular section double reinforced beam, if x 0.7yC. e = 0.6yD. e0.6yFull marks: 24.

4、 RA. AB. BC. CD. DFull marks: 25. what are the following measures for reducing shrinkage cracks in concrete?A. add steel wire mesh in pouring concreteB. increase the amount of cement in the proportioning of concreteC. uses high-grade cementD. uses a small aggregate of elastic modulusFull marks: 26.

5、eA. aB. BC.CD. DFull marks: 27. which of the following statements is true (?)The faster the loading rate of A., the lower the compressive strength of concrete cubeThe higher the aspect ratio of B. prism specimen is, the higher the compressive strength isC. concrete cube specimen can better reflect t

6、he actual compressive situation of concrete than prism specimenThe friction between the D. concrete specimen and the press pad makes the compressive strength of concrete increaseFull marks: 28. the strength design value of steel bars without apparent flow amplitude is determined by the following ite

7、mA. material strength standard value * material partial factorB. material strength standard value / material partial factorC. 0.85 * material strength standard value / material partial factorD. material strength standard value / (0.85 * material partial factor)Full marks: 29. the design reference pe

8、riod is the time parameter used to determine the variable load and the time dependent material performance value. The design reference period determined in our country is the following valueA. 25 yearsB. 50 yearsC. 100 yearsD. 75 yearsFull marks: 210. RA. aB. BC. CD. DFull marks: 211. what is the ef

9、fect of carbon content in carbon structural steel on the strength, plasticity, toughness and weldability of steel?With the increase of A. strength, the plasticity and toughness decreased, and weldability improvedThe strength of B. increases, plasticity, toughness and weldability increaseThe strength

10、 of C. increases, plasticity, toughness and weldability decreaseThe strength, plasticity, toughness and weldability of D. all decreaseFull marks: 212. the allowable slenderness ratio of a truss member of a general building structure under static loads is the followingA. 350B. 250C. 300D. 400Full mar

11、ks: 213. what will happen in reinforced concrete axial compression members under constant long-term load?A. creep increases the compressive stress of concreteThe compressive stresses of B. concrete and steel bars are unchangedC. creep reduces the compressive stress of concrete and increases the comp

12、ressive stress of steel barD. creep increases the compressive stress of concrete and decreases the compressive stress of steel barFull marks: 214. what is the correct statement about the invention of cement?A. Portland cement was invented by Asp Ding Yu in England in 1824B. Portland cement was inven

13、ted by American Edison in 1863C. Portland cement was invented in 1824 by the Englishman DaltonD. Portland cement was invented by the French Duma in 1863Full marks: 215. RA. AB. BC. CD. DFull marks: 216. for the steel bars without obvious amplitude, the standard value of strength is based onA. 0.9 ti

14、mes ultimate strengthB. 0.2 times ultimate strengthC. ultimate tensile strengthD. residual strain is 0.2% stressFull marks: 2In the 17. I-beam I16, the number 16 indicates the following itemA. section height of I-beam is 16cmB. section width of I-beam is 16cmC. I-beam cross flange width is 16cmD. th

15、e web height of I-beam section is 16cmFull marks: 218., the compressive capacity of reinforced concrete columns with spiral stirrups,Under the same conditions, the compressive bearing capacity of the screw hoops without spiral hoops is due to the following reasonsA. has another steel bar under press

16、ureB. spiral stirrups make the concrete more compactThe compression area of C. section increasesD. spiral stirrups restrain the lateral deformation of concreteFull marks: 2The 19. grade Q235-D indicates the following items of this carbon structural steelA. yield point is 235MPa, good qualityB. tensi

17、le strength is 235MPa, the best qualityC. yield point is 235MPa, the worst quality2.35% D. alloy content, calm steelFull marks: 220. RA. aB. BC. CD. DFull marks: 221. the carrying capacity calculated by the spiral stirrup column shall not exceed 1.5 times of the ordinary column, which is to satisfy

18、the following requirementsA. limit cross sectional dimensionB. does not undergo brittle fractureC. in normal use, the outer layer of concrete will not fall offD. guarantees the ductility of the componentFull marks: 222. the average crack spacing of reinforced concrete members has nothing to do with

19、the following factorsA. concrete strength gradeB. thickness of concrete protective layerC. longitudinal tensile steel diameterD. longitudinal reinforcement ratioFull marks: 223. when the steel is treated by cold hardening, the plasticity decreases, but what happens to the yield point?A. decreaseB. i

20、nvariantC. raiseD. drops to zeroFull marks: 224. In the following conditions, the overall stability of the welded I-shaped simple supported beam is the bestA. strengthens the compression flangeB. strengthens the tensile flangeThe section length of C. beam is equal lengthD. biaxial symmetryFull marks

21、: 225. RA. AB. BC. CD. DFull marks: 226. civil engineering structures classified by use function refer to the following itemsA. load-bearing structure, frame structure, shear wall structure, frame shear wall structureB. steel structure, concrete structure, masonry structure, composite structure, woo

22、d structureC. building structure, bridge structure, geotechnical engineering structure, hydraulic engineering structureD. grid structure, shell structure, suspension structure, special structureFull marks: 2Twenty-sevenTA. aB. BC. CD. DFull marks: 2In 1056 28., in Chinas Shanxi Yingxian County pagod

23、a, what rightA.The 80m, a total of 12The B. 67.3m, a total of 9The C. 30m, a total of 5The D. 46.6, a total of 6Full marks: 229. tA. aB. BC. CD. DFull marks: 230. in addition to construction factors, the following are the most important factors that affect the compressive strength of solid brick mas

24、onryThe strength of bulk A.Strength of B. mortarC. block sizeWorkability and water retention of D. mortarFull marks: 231. when carrying out the ultimate design of bearing capacity, what combinations should be adopted?A. basic combination and accidental combinationB. basic combination and standard co

25、mbinationC. accidental combination and standard combinationD. standard combination and quasi permanent combinationFull marks: 232. RA. AB. BC. CD. DFull marks: 233. which of the following are the basic values of the strength indices of concrete (?)A. standard value of axial compressive strengthB. cu

26、be compressive strength standard valueC. average value of axial compressive strengthD. cube compressive strength averageFull marks: 234. cross flange welded cross section axial compression member, whose cross section type belongs to the following itemA. aB. B classC. C classD. buckling around the X

27、axis belongs to the B class, and the buckling of the Y axis belongs to the C classFull marks: 2What is the correct flexural bearing capacity of 35. eccentrically compressed members?A. increases with the increase of axial forceB. increases with the decrease of axial forceWhen the C. is eccentrically

28、compressed, it increases with the increase of axial forceWhen D. is eccentrically loaded, it increases with the increase of axial forceFull marks: 236.4A. aB. BC. CD. DFull marks: 2All of the contents of the steel belly type axial tension member shall be calculated as follows: (37.)A. strengthB. str

29、ength and overall stabilityC. intensity, local stability and overall stabilityD. strength and slenderness ratio controlFull marks: 238. DA. aB. BC. CD. DFull marks: 239., what is the most effective measure to improve the sectional stiffness of reinforced concrete flexural members?A. increase concret

30、e strength gradeB. increases the section height of the memberC. increase the amount of reinforcementD. changes cross section shapeFull marks: 240. eA. aB. BC. CD. DFull marks: 241. what is the correct compressive strength of brick masonry as compared to that of brick?A. highB. lowC. sameD. is not de

31、finiteFull marks: 242. pA. aB. BC. CD. DFull marks: 243. in the main form of flexural failure of flexural members, what are the following in terms of shear capacity?A. inclined tensile failure shear compression failure oblique compressive failureB. compression failure deflection failure oblique comp

32、ression failureC. baroclinic failure shear compression failure oblique tensile failureD. shear compression failure baroclinic damage oblique tensile failureFull marks: 244. the failure characteristics of reinforced concrete eccentrically loaded members refer to the following itemsA. steel is pulled

33、away from the side of the longitudinal force, and then the other side is bent and the concrete is crushedThe B. is pulled close to the side of the longitudinal force, and then the other side is bent and the concrete is crushedC. steel and concrete near one side of the longitudinal force are subjecte

34、d to stress, while the other side is pulled by tensile steelD. the steel and concrete at one side far from the longitudinal force are subjected to stress, while the other side is pulled by a tensile steel barFull marks: 245. a prestressed concrete axial tension member with a crack control grade of t

35、wo. Under the load standard combination, what is the correct description of the stress state of the concrete?A. allows tensile stress to existTensile stress is not allowed in B.C. tensile stress is zeroD. does not allow for compressive stressesFull marks: 246. a symmetrically reinforced component is found to have been lowered by 20% of the steel bars, and which of the following is true?The influence of A. on the axial compressive bearing capac