lattice n. 1.格子。 2.【物理學(xué)】點(diǎn)陣;網(wǎng)絡(luò)。 3.【建筑】格構(gòu)。 crystal lattice 晶體;【物理學(xué)】點(diǎn)陣,晶格。 a lattice frame 格子框架。 vt. 1.把…制成格子狀。 2.用格子覆蓋[裝飾]。
roof n. 1.屋頂,房屋;家屋。 2.(放行李的)車(chē)頂;笠形罩。 3.上頜。 4.最高部,頂部;【礦物】頂板。 5.【航空】(飛機(jī))機(jī)身上的包皮;擔(dān)任空中掩護(hù)的飛機(jī);〔口語(yǔ)〕(飛機(jī)的)絕對(duì)上升限度。 the roof of heaven 天空。 the roof of the world 世界的屋脊。 full to the roof 塞滿(mǎn)一屋。 hit the roof [ceiling]勃然大怒[狂怒]。 left [be] without a roof 無(wú)家可歸。 raise the roof 〔俚語(yǔ)〕喧鬧;鬧翻了天;大聲訴苦[發(fā)怨言]。 under sb.'s roof 寄住某人家里。 under a roof of foliage 在樹(shù)蔭下。 under the roof of 住在…的家里,寄…的籬下,在…的照應(yīng)下。 vt. 給…蓋屋頂;像屋頂一樣蓋著;放入屋里;保護(hù),庇護(hù)。 adj. -less 無(wú)屋頂?shù)?;無(wú)家的,無(wú)住處的。
If we want to monitor the damage of the span lattice roof structure , the wind - induced responses and identification of parameters become the important problems first of all , which also the key technique of the damage monitoring of the structure . the method of time domain parameter identification is superior to the method in frequency domain : the structural response is only needed to identify the parameters of the structure 時(shí)域參數(shù)識(shí)別方法具有頻域方法無(wú)可比擬的優(yōu)點(diǎn),僅僅需要結(jié)構(gòu)的響應(yīng)信息,便可實(shí)現(xiàn)結(jié)構(gòu)的參數(shù)識(shí)別,尤其對(duì)于大跨空間網(wǎng)格結(jié)構(gòu),人為激勵(lì)往往有很多的弊端,因此,積極發(fā)展有效的時(shí)域參數(shù)識(shí)別方法,還是很有現(xiàn)實(shí)意義的。
Since long - span lattice roof structures are generally with whole rigidity and it ’ s characteristic of light , flexible and low damping . with the development of economy and progress of science and technology , more and more long - span roofs have been built , which have individual characteristics in architecture and structure 空間網(wǎng)格屋蓋結(jié)構(gòu)因具有整體剛度好、質(zhì)量輕、柔性大、阻尼小等特點(diǎn),隨著經(jīng)濟(jì)的發(fā)展,各種外形獨(dú)特、結(jié)構(gòu)形式新穎的大跨度網(wǎng)格屋蓋結(jié)構(gòu)大量涌現(xiàn)。
During the long active service time , the structure maybe presents all kinds of structural damage because such reasons as tired accumulating , environment corroding and natural calamity function , etc . in order to find those damages early , nip in the bud , and lower the damage of accidents , it is great meaning full to research the technique of online damage monitoring of the long - span lattice roof structure 結(jié)構(gòu)在服役期間,由于疲勞累積、環(huán)境腐蝕及自然災(zāi)害等作用,可能出現(xiàn)結(jié)構(gòu)損壞,因此,為了能夠及時(shí)發(fā)現(xiàn)問(wèn)題,防患于未然,把事故損失降到最低點(diǎn),在結(jié)構(gòu)正常使用情況下,對(duì)大跨空間網(wǎng)格結(jié)構(gòu)進(jìn)行在線損傷監(jiān)測(cè)研究,就顯得極有現(xiàn)實(shí)意義。