It can be concluded that difference between tensile modulus and compressive modulus is an important property of soil and the solution of elasticity theory with different modulus in tension and compression is necessary and reasonable 可以認為,拉壓模量不同是土的重要性質(zhì),拉壓模量不同彈性理論解答的提出是合理的。
The relation between rheological breaking ratio and plastic work is set up according to the equation relation between outer plastic work and energy of plastic deformation . it is helpful to the understanding of elasto - plastic constitutive relationship of rockfill and braking of particles . based on analysis of test result , in - site observation data , this paper put forward a quantitative relation between rheology and valley shape , rockfill mechanical parameters , such as dry density , compressive modulus , softening factor , pore ratio , etc . the main factors influencing the rheological behavior of rockfill can be classified into inner factors and outer factors 堆石作為面板壩的主體,影響其流變的因素頗多且十分復(fù)雜,既有內(nèi)因也有外因,根據(jù)試驗、原型觀測資料對內(nèi)外因素所做的分析,本文提出了流變與河谷形狀等外因、流變與壩體常規(guī)物理力學(xué)指標等內(nèi)因的定量關(guān)系和影響堆石流變的多因素綜合表達式,由此建立了堆石流變與堆石常規(guī)物理力學(xué)指標(如干密度、壓縮模量、軟化系數(shù)、孔隙比等等)之間的聯(lián)系。
Test results show that the steel fiber in concrete have more effectiveness on improving the splitting tensile strength and the flexural strength in the early age than after its hardening ; the flexural modulus of elasticity of sfrc are higher than the plain concrete at different ages while their compressive modulus of elasticity are almost the same . it ' s also shown that , similar to the plain concrete , the early - age loading decreases the strengths of sfrc , but , with the increase of the contents of the steel fiber things are getting better , especially for the splitting tensile strength and the flexural strength 試驗結(jié)果表明:與性能穩(wěn)定之后相比,在混凝土中摻入鋼纖維對它的早期劈裂抗拉強度和抗折強度有尤為顯著的提高作用;對各齡期的受壓彈性模量影響不大,而對提高抗折彈性模量有一定的效果;與素混凝土試件相同,在早期(強度達到28天強度的85前)對鋼纖維混凝土試件施加荷載會對它的各種強度產(chǎn)生一定的不利影響,但是摻入鋼纖維可以減輕這種不利影響,尤其對劈裂抗拉強度和抗折強度作用突出,并且含纖率越高,效果越明顯。