【正文】 由于整個飛機(jī)傾斜斷層側(cè)向推力延誤。主要的或最大的震動，隨后通常是由眾多小的余震。大多數(shù)高層建筑都建在擁擠的城市用地，難以利用，因此仔細(xì)的規(guī)劃和施工順序組 織是至關(guān)重要的。進(jìn)行檢查，然后做出的最高水平偏轉(zhuǎn)，并在主要結(jié)構(gòu)構(gòu)件的力量，使用一些快速近似性能分析技術(shù)。由于不同的樓層負(fù)荷往往是相似的，該系統(tǒng)每單位樓面面積重量約不斷，不論建筑物的高度。土地成本高，為了避免出現(xiàn)連續(xù)的城市擴(kuò)張以及需要維護(hù)重要的農(nóng)業(yè)生產(chǎn)都有助于推動住宅樓宇向上。s crust. Although the vibrational movement of the earth during an earthquake is in all directions, the horizontal ponents are of chief importance to the structural engineer. These movements exert forces on a structure because they accelerate. This acceleration is simply a change in the velocity of the earth movement. Since the ground motion in an earthquake is vibratory, the acceleration and force that it exerts on a structure reverses in direction periodically, at short intervals of time. The structural engineer is interested in the force exerted on a body by the movement of the earth. This may be determined from Newton39。s and architect39?，F(xiàn)代高層建筑的增長，然而，這在 19 世紀(jì) 80年代開始，在很大程度上是為商業(yè)和住宅用途。 但在所有的結(jié)構(gòu)非常最高，但結(jié)構(gòu)安排將服從安排和空間美學(xué)的建筑要求。對這些側(cè)向力的增加造成的建設(shè)的彎 矩至少高度廣場， 和其效果會變得越來越重要，因?yàn)榻ㄖ锔叨鹊脑黾?。初步分析程序，檢查和調(diào)整，直到滿意的解決辦法，得到重復(fù)。 地震斷層 地震的起源 據(jù)我國地震臺起源于軟弱的飛機(jī)或在地殼斷裂，稱為“錯誤”。可能是最常見的類型是走滑斷層，其中相對斷層位移主要是在本質(zhì)上平面垂直斷層水平。 由地震產(chǎn)生力量 沿斷層滑動突然發(fā)生?？稍谙铝斜砀裰校? F=ma 在這 F是一種力量，產(chǎn)生一種加速度 1時 1米的大機(jī)構(gòu)擔(dān)任這個方程無量綱。有些被列為“積極的”，因?yàn)樗嘈?，這些錯誤可能會經(jīng)歷不時在不久的將來地質(zhì)運(yùn)動。但是斷層破裂可能很困難或不可能看到嵌 、 材料，如砂石。這些地形特點(diǎn)的年齡，因此斷層的活動時間，可以通過他們被風(fēng)化侵蝕的程度估計。 在出現(xiàn)故障破裂或形成陡坎 近似的時間已經(jīng)被放射性碳在破裂或懸崖發(fā)現(xiàn)木頭分析確定在某些情況下。據(jù)此，確定活斷層和土地使用準(zhǔn)則地 質(zhì)危險區(qū)和危險的特殊工程的減少可能是令人懷疑的。這個比例被稱為地震系數(shù)。 這種加速僅僅是在地球運(yùn)動速度的變化。一個不太常見的類型是逆沖斷層 當(dāng)?shù)厍蛏系臄鄬酉聣簯?yīng)力和滑移有上升和下跌態(tài)勢 發(fā)展的方 向沿傾斜斷層面。這一點(diǎn)被稱為震源或重點(diǎn)和地球表面的點(diǎn) 上方這一點(diǎn)稱為震中。 勃起速度是在獲得在這樣大規(guī)模的項(xiàng)目涉及投資回報的重要因素。最初的梁，板的尺寸通常為基礎(chǔ)，在時刻剪一些簡單的我獲得 需氧量重力負(fù)載分析，或從編纂中和年底跨度值。 不可避免的結(jié)構(gòu)因素的主要功能是抵抗建筑物及其內(nèi)容的重力負(fù)荷重量。 城鎮(zhèn)人口的迅速增長和隨之而來的壓力有限的 空間大大影響了城市住宅發(fā)展。s surface directly above this point is called the epicenter. The main or greatest shock is usually followed by numerous smaller aftershocks. These aftershocks are produced by slippage at other points on the fault or in the fault zone. Types of earthquake faults Faults are classified in accordance with the direction and nature of the relative displacement of the earth at the fault plane. Probably the most mon type is the strikeslip fault in which the relative fault displacement is mainly horizontal across an essentially vertical fault plane. The great San Andreas fault in California is of the type. Another type is termed a normal fault — when the relative movement is in an upward an downward direction on a nearly vertical fault plane. The great Alaskan earthquake of 1964 was apparently of this type. A less mon type is the thrust fault — when the earth is under pressive stress across the fault and the slippage is in an upward and downward direction along an inclined fault plane. The San Fernando earthquake was generated on what has usually been classified as a thrust fault, although there was about as much lateral slippage as up and down slippage due to thrust across the inclined fault plane. Some authorities refer to this bined action as lateral thrust faulting. The pressive strain in the earth of the San Fernando Valley floor just south of the th