On the basis of expound the theory of building exterior - protected construction energy consumption and the gene of influence the building energy, set up mathematics model, this article discuss the mechanism of dispelling the heat of the buildings " thermal bridge and the complication that influence it, and then synthetic analysis and calculate the influence range of building thermal bridge in exterior - protected construction column thermal bridge to the building outer wall get the conclusion that when the construction column can satisfy the building stress - area, in bulgy construction column dispel less heating than out bulgy construction column. but if the pole stuck out more than 100mm, in bulgy or out bulgy make no difference
本文在闡述建築圍護結構耗熱原理以及影響建築能耗因子的基礎上,採用數值模擬方法,探討了建築熱
橋傳熱的基本機理和影響建築熱
橋傳熱的因素,進而對建築熱
橋在圍護結構傳熱中的影響范圍進行了綜合分析和計算,研究了構造柱熱
橋型式對建築外墻能耗的影響,
得出了構造柱在滿足建築受力面積要求的情況下,內凸構造柱較外凸構造柱略能減少散熱量的結論,但是凸出過大( 100mm )無論內凸還是外凸對建築耗熱都沒有大的差別。
The calculation modes of the coefficient of shrinkage and creep of the bulgy core concrete in steel tube are discussed. based on a few reasonable hypotheses and the stress - strain relation of concrete acquired by the " adjusting valid modulus depending on load time " method, a compact formula is reasoned out, which is applied to calculate the equivalent elastic modulus of the bulgy core concrete considering the affection of shrinkage and creep. so, the analysis of the affection on cfst arch bridge by shrinkage and creep can be progressed by pole - girder fem, further more, the analysis precision is quite high
本文還對核心膨脹混凝土特殊的收縮、徐變系數計算模式展開了探討,在合理的假設前提下,採用「齡期調整的有效模量法」
得到的混凝土的本構關系,推導出鋼管內核心混凝土在考慮徐變影響后的等效彈性模量計算公式,並以此為基礎採用桿系有限元方法來對鋼管混凝土拱
橋進行較高精度的收縮徐變分析。
She got a scholarship to cambridge but dropped out a year later.
她
得到了劍
橋大學的獎學金,但一年以後就退學了。
He succeeded so well that his game of " contract bridge " became the staple recreation of card players everywhere
他成功地使
得這種「契約
橋牌」成為世界各地牌迷們的主要游戲。
Regular vinyl addition polymers may be obtained from particularly strained endocyclic double bonds.
由帶特殊張力的
橋環雙鍵可以
得到規整的乙烯類加成聚合物。
When catchment area, average channel gradient and catchment shape factor of designed culvert or bridge are known, a user can be convenient to get local parameters c, e and b from standard contour charts and easy to calculate flood flow just by a calculator. design period of flood flow is enormously shortened as well as a high precision. estimated flood flow through culvert or small bridge by new calculation model is generally less than by traditional methods, so that much cost is cut down a s reducing the span of culvert or small bridge
以75000km ~ 2的川中丘陵地區為試點研究區,繪制了該地區新模型的參數等值線圖,率定了不同設計頻率的改正系數,使設計者只需在地形圖上獲取集水面積,河道平均坡降和流域形狀系數,在參數等值線圖上查
得橋涵所在地的相應參數,使用計算器即可迅速計算出設計流量,大大縮短了設計周期,且精度較高,設計的洪水流量一般低於傳統方法,從而可減小
橋涵跨徑,節省投資。
Bridges play a significant part in transportation. their health conditions are vital to ensure the fluency on roads. recently frequent severe accidents with tremendous casualties amid collapse of bridges make the health monitoring and damage identification of bridges one of the hot research focuses
橋梁是交通運輸線路中的重要組成部分,
橋梁的健康狀態對確保道路暢通至關重要,近年來國內外頻繁出現
橋塌人亡的重大事故,使
得橋梁健康檢測與損傷識別成為眾多學者和工程師們研究的熱點問題之一。
The most of highway in our country have this matter because of differential settlement. the way in common use is set up a section between bridge abutment and embankment
對這個問題目前常用的解決方法是在
橋臺和路堤之間設置一
橋頭過渡帶,使
得橋臺和路堤的工后沉降差能勻攤在這一過渡帶內。
With the development and construction of freeways, large amount of bridges are being built. high - speed driving demands good continuity and less expansion joints of the bridges
高速公路的迅速發展使
得橋梁的數量大幅度增加,而高速度的行車則要求
橋梁具有較好的連續性能、較少的伸縮縫構造等。
The left mouse button from the top of the screen made deck again by the left will deck can bypass into the river
鼠標左鍵從屏幕上方取
得橋板,再次按左鍵將
橋板放到河裡即可搭
橋。
Introduction : the left mouse button from the top of the screen made deck again by the left will deck can bypass into the river
鼠標左鍵從屏幕上方取得橋板,再次按左鍵將橋板放到河裡即可搭橋。