| 5 | 1/1 | 返回列表 |
| 查看: 1043 | 回復: 4 | |||
| 當前只顯示滿足指定條件的回帖,點擊這里查看本話題的所有回帖 | |||
[求助]
請教考慮混凝土收縮的裂縫控制規(guī)范
|
|||
|
在混凝土結構中,混凝土收縮是引起開裂的重要原因,請問有哪些設計規(guī)范考慮了混凝土的收縮問題? 因為我不是搞結構的,在此先謝謝大家了。 |
|
不知道下面規(guī)范 是否算結構方面是如何考慮的。 Shrinkage and Temperature Reinforcement Requirements in ACI 318-02 7.12.1 — Reinforcement for shrinkage and temperature stresses normal to flexural reinforcement shall be provided in structural slabs where the flexural reinforcement extends in one direction only. 7.12.1.1 — Shrinkage and temperature reinforcement shall be provided in accordance with either 7.12.2 or 7.12.3. 7.12.1.2 — Where shrinkage and temperature movements are significantly restrained, the requirements of 8.2.4 and 9.2.3 shall be considered. 7.12.2— Deformed reinforcement conforming to 3.5.3 used for shrinkage and temperature reinforcement shall be provided in accordance with the following: 7.12.2.1 — Area of shrinkage and temperature reinforcement shall provide at least the following ratios of reinforcement area to gross concrete area, but not less than 0.0014: (a) Slabs where Grade 40 or 50 deformed bars are used: 0.0020 (b) Slabs where Grade 60 deformed bars or welded-wire fabric (plain or deformed) are used: 0.0018 (c) Slabs where reinforcement with yield stress exceeding 60,000 psi measured at a yield strain of 0.35 percent is used: (0.0018 × 60,000)/ƒy 7.12.2.2 — Shrinkage and temperature reinforcement shall be spaced not farther apart than five times the slab thickness, nor farther apart than 18 in. 7.12.2.3 — At all sections where required, reinforcement for shrinkage and temperature reinforcement shall develop the specified yield strength fy in tension in accordance with Chapter 12. |
木蟲 (正式寫手)

|
我手上有一份舊的規(guī)範 (英文版) ACI 209R-92規(guī)範 Prediction of Creep, Shrinkage,and Temperature Effects in Concrete Structures 若有須要 email chen@maeda.com.tw 回信地址 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 070300化學354求調劑 +10 | 101次希望 2026-03-28 | 10/500 |
|
|---|---|---|---|---|
|
[考研] 362求調劑 +3 | 西南交材料專碩3 2026-03-31 | 3/150 |
|
|
[考研] 化學工程085602 305分求調劑 +26 | RichLi_ 2026-03-25 | 27/1350 |
|
|
[考研] 282求調劑 +3 | 呼吸都是減肥 2026-03-31 | 3/150 |
|
|
[考研] 英一數(shù)一408,總分284,二戰(zhàn)真誠求調劑 +3 | 12.27 2026-03-30 | 5/250 |
|
|
[考研] 297 地理學070500 復試求調劑 +3 | 小圓圈圈ooo 2026-03-30 | 3/150 |
|
|
[考研] 抱歉 +3 | 田洪有 2026-03-30 | 3/150 |
|
|
[考研] 求調劑323材料與化工 +10 | 1124361 2026-03-24 | 10/500 |
|
|
[考研] 298求調劑 +3 | 什么是胖頭魚 2026-03-30 | 5/250 |
|
|
[考研] 085701求調劑初試286分 +5 | secret0328 2026-03-28 | 5/250 |
|
|
[考研] 085602 化學工程專碩 340分求調劑 +4 | qianbai11 2026-03-29 | 4/200 |
|
|
[考研] 305求調劑 +8 | RuiFairyrui 2026-03-28 | 8/400 |
|
|
[考研] 321求調劑 +7 | 璞玉~~ 2026-03-25 | 8/400 |
|
|
[考研] 本科新能源科學與工程,一志愿華理能動285求調劑 +7 | AZMK 2026-03-28 | 11/550 |
|
|
[考研] 299求調劑 +7 | 嗯嗯嗯嗯2 2026-03-27 | 7/350 |
|
|
[考研] 086000調劑 +3 | 7901117076 2026-03-26 | 3/150 |
|
|
[考研] 315調劑 +4 | 0860求調劑 2026-03-26 | 5/250 |
|
|
[考研] 336材料求調劑 +7 | 陳瀅瑩 2026-03-26 | 9/450 |
|
|
[考研] 341求調劑 +7 | 青檸檬1 2026-03-26 | 7/350 |
|
|
[考研] 300分,材料,求調劑,英一數(shù)二 +5 | 超贊的 2026-03-24 | 5/250 |
|