本文選題：大排水系統(tǒng) + 徑流行泄通道��； 參考：《北京建筑大學(xué)》2017年碩士論文

【摘要】：城市大排水系統(tǒng)是海綿城市多目標(biāo)雨水系統(tǒng)和城市排水防澇綜合體系中的重要組成部分,但我國相關(guān)規(guī)劃及“遲來”的規(guī)范標(biāo)準(zhǔn),對城市大排水系統(tǒng)的規(guī)劃、設(shè)計指導(dǎo)仍存在一定不足,相比發(fā)達國家,我國的排水防澇綜合控制體系及大排水系統(tǒng)構(gòu)建的相關(guān)研究仍有所欠缺,對于大排水系統(tǒng)中“蓄”“排”兩方面,“排”研究相對較少,尤其是道路大排水系統(tǒng)的規(guī)劃設(shè)計方法,因此對于道路大排水系統(tǒng)的綜合規(guī)劃開展、設(shè)計方法、水文水力分析、蓄排組合設(shè)施的規(guī)模布局確定等多方面仍需要開展長期研究。本文主要圍繞城市大排水系統(tǒng)構(gòu)建這一重點專題,通過文獻綜述、對比研究、水力計算與試驗、案例輔助等方法,針對我國目前大排水系統(tǒng)構(gòu)建及存在的主要問題,首先進一步明確大排水系統(tǒng)的概念、構(gòu)成,梳理大排水系統(tǒng)的構(gòu)成及與海綿城市相關(guān)子系統(tǒng)的銜接關(guān)系,概括總結(jié)大排水系統(tǒng)的規(guī)劃思路及道路用于城市大排水系統(tǒng)的規(guī)劃方法,分析新老城區(qū)、不同地形城市大排水系統(tǒng)構(gòu)建要點。針對道路大排水系統(tǒng)設(shè)計方法及安全評價展開重點討論。本文的主要研究內(nèi)容及相關(guān)結(jié)論如下:(1)提出基于推理公式法與地表漫流計算方法結(jié)合建立超過小排水系統(tǒng)排水能力的徑流行泄通道設(shè)計方法,根據(jù)內(nèi)澇風(fēng)險分析確定內(nèi)澇防治設(shè)計重現(xiàn)期的排水分區(qū),計算該設(shè)計標(biāo)準(zhǔn)對應(yīng)的匯水區(qū)域徑流總量和排水管渠系統(tǒng)的最大排水量,由此得出需要地表行泄通道排除的徑流量,對道路或溝渠的斷面、坡度進行設(shè)計,由此進行反復(fù)的校核與設(shè)計調(diào)整,直至滿足設(shè)計標(biāo)準(zhǔn)要求;(2)提出基于行泄通道設(shè)計流量與調(diào)蓄設(shè)施流量變化耦合的蓄排組合設(shè)施設(shè)計方法,利用地表匯流計算方法與多功能調(diào)蓄溢流過程推導(dǎo)計算,演進降雨歷時內(nèi)調(diào)蓄設(shè)施的入流和出流過程線,合理設(shè)計徑流行泄通道+調(diào)蓄設(shè)施綜合實現(xiàn)區(qū)域高內(nèi)澇防治標(biāo)準(zhǔn);(3)針對道路徑流行泄通道的安全設(shè)計標(biāo)準(zhǔn)展開討論,基于行人在水流中的穩(wěn)定性分析,綜合考慮不同工況,確定道路行泄通道風(fēng)險標(biāo)準(zhǔn)為流速*水深,通過水力計算與模型實驗分析道路作為行泄通道時行人的安全性,得出人在正常站立時不同坡度下的臨界失穩(wěn)流速*水深值在0.33~0.46 m~2/s;(4)考慮在各種條件下的最不利情況,確定行人失穩(wěn)的臨界流速*水深0.3~0.54 m~2/s之間,當(dāng)?shù)缆仿访媾潘魉?水深為0.3 m~2/s時,行人處于低風(fēng)險區(qū),高于0.54 m~2/s時處于高危險區(qū),介于兩者之間時行人由于不同狀態(tài)會處于中危險區(qū),并且根據(jù)計算與試驗數(shù)據(jù)做出流速與水深關(guān)系曲線,建立道路徑流行泄通道安全四級制危險等級,此標(biāo)準(zhǔn)可為交通安全預(yù)警、城市內(nèi)澇防治、洪泛區(qū)規(guī)劃提供科學(xué)參考。(5)最終輔以實際案例介紹徑流行泄通道的規(guī)劃設(shè)計方法,為我國城市大排水系統(tǒng)的規(guī)劃設(shè)計、相關(guān)標(biāo)準(zhǔn)制定提供更科學(xué)的思路與技術(shù)路線。
[Abstract]:The urban large drainage system is an important part of the multi target rainwater system in the sponge city and the comprehensive system of urban drainage and waterlogging prevention, but there are still some shortcomings in the planning and design guidance of the urban large drainage system in our country and the "late" standard standard. The research on the construction of drainage system is still deficient. For the two aspects of "storage" and "row" in the large drainage system, the research on "row" is relatively small, especially the planning and design method of the large drainage system. Therefore, the design method, hydrologic hydraulic analysis, and the scale distribution of the storage and arrangement facilities are carried out for the comprehensive planning of the large drainage system. This paper mainly focuses on the key topics of the urban large drainage system, including literature review, comparative study, hydraulic calculation and test, case assistance and other methods. In view of the main problems of construction and existence of large drainage systems in China, the concept of large drainage system is further clarified. The composition of the large drainage system and the connection with the related subsystems of the sponge City, summarize the planning ideas of the large drainage system and the planning method of the road used in the urban large drainage system, analyze the main points of the construction of the large drainage system in the new and old urban areas and different terrain cities. The main contents and conclusions of this paper are as follows: (1) a design method based on the combination of reasoning formula method and surface flow calculation method, which combines the drainage capacity of the small drainage system, is put forward, and the drainage area of the design reappearance period of the waterlogging prevention and control is determined according to the risk analysis of waterlogging, and the design standard is calculated. The total amount of runoff in the confluence area and the maximum drainage of the drainage pipe and canal system will result in the runoff discharge from the drainage channel of the surface, the design of the cross section and the slope of the road or ditch, and the repeated check and design adjustment until the design standard is met. (2) the flow and storage design based on the drainage channel design is put forward. The design method of the coupled storage and arrangement of facilities flow changes, using the calculation method of surface confluence calculation and the multi-function storage overflow process, evolves the inflow and outflow process lines of the storage facilities in the rainfall period, and the reasonable design of the channel and the storage facilities to realize the regional high waterlogging prevention and control standards, and (3) the popularity of the road path is popular. The safety design standard of the channel is discussed. Based on the analysis of the stability of pedestrians in the water flow and considering the different working conditions, the risk standard of the road drainage channel is determined by the flow depth. The pedestrian safety of the road is analyzed by the hydraulic calculation and the model experiment. The boundary instability flow velocity * water depth is at 0.33~0.46 m~2/s; (4) considering the most unfavorable conditions under various conditions, the critical flow velocity of pedestrian instability * the depth of water depth * 0.3~0.54 m~2/s, when the road surface drainage velocity * is 0.3 m~2/s, pedestrians are in a low risk zone, higher than 0.54 m~2/ s in a high danger zone, when pedestrians are between the two. Different states will be in the middle danger zone, and according to the calculation and test data to make the curve of flow velocity and depth of water, establish the safety four level hazard grade of road path popular vent channel. This standard can provide scientific reference for traffic safety early warning, urban waterlogging prevention and Flood flood planning. (5) finally, the actual cases are introduced with the actual case. The planning and design method provides a more scientific way of thinking and technology for the planning and design of urban drainage system in China.

【學(xué)位授予單位】：北京建筑大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U417.3;TU992

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