本文選題：高等級(jí)公路 + 路基碾壓��； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：路基壓實(shí)質(zhì)量是影響高等級(jí)公路長(zhǎng)期安全穩(wěn)定運(yùn)行的關(guān)鍵。常規(guī)高等級(jí)公路施工主要依靠監(jiān)理和施工人員人工控制壓路機(jī)碾壓過(guò)程，由于受人為因素干擾，往往易于造成管理較粗放、漏壓、欠壓和超壓等問(wèn)題，難以確保施工質(zhì)量。此外，對(duì)路基壓實(shí)質(zhì)量的檢驗(yàn)和評(píng)價(jià)通常以驗(yàn)收時(shí)的挖坑取樣為判斷依據(jù)。但是，用有限的試驗(yàn)點(diǎn)去評(píng)估整個(gè)工作面的壓實(shí)效果往往會(huì)存在較大偏差，不能真實(shí)反映整個(gè)工作面的壓實(shí)質(zhì)量。同時(shí)，這種檢驗(yàn)方法一方面會(huì)對(duì)工作面施工作業(yè)帶來(lái)干擾，，另一方面由于實(shí)驗(yàn)結(jié)果無(wú)法快速獲得從而影響施工進(jìn)度，且難以實(shí)現(xiàn)對(duì)壓實(shí)質(zhì)量的實(shí)時(shí)反饋。因此，有必要結(jié)合高等級(jí)公路路基碾壓施工的特點(diǎn)，研制開(kāi)發(fā)路基壓實(shí)質(zhì)量的實(shí)時(shí)監(jiān)控系統(tǒng)，這對(duì)于確保路基施工質(zhì)量、實(shí)現(xiàn)施工質(zhì)量的實(shí)時(shí)評(píng)估和及時(shí)反饋控制具有重要的理論與現(xiàn)實(shí)意義。本文主要研究?jī)?nèi)容和成果如下： （1）針對(duì)高等級(jí)公路路基碾壓質(zhì)量控制的要求，設(shè)計(jì)了路基壓實(shí)質(zhì)量實(shí)時(shí)監(jiān)控系統(tǒng)的總體框架和主要功能，利用GPS技術(shù)、GPRS技術(shù)和計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)，在課題組已有成果的基礎(chǔ)上，研制開(kāi)發(fā)了該系統(tǒng)，實(shí)現(xiàn)了路基碾壓過(guò)程中對(duì)壓路機(jī)碾壓軌跡的精細(xì)化控制，以及對(duì)壓路機(jī)振動(dòng)頻率和路基壓實(shí)效果的實(shí)時(shí)監(jiān)測(cè)，克服了常規(guī)施工過(guò)程中人為粗放管理控制的弊端，可確保路基碾壓施工質(zhì)量。 （2）基于研發(fā)的高等級(jí)公路路基壓實(shí)質(zhì)量實(shí)時(shí)監(jiān)控系統(tǒng)，分析了壓實(shí)監(jiān)測(cè)值（CV值）同常規(guī)壓實(shí)質(zhì)量表征指標(biāo)（壓實(shí)度、路基動(dòng)態(tài)彈性模量）之間的相關(guān)性，得出了CV值與常規(guī)壓實(shí)質(zhì)量表征指標(biāo)之間具有強(qiáng)線性相關(guān)性的結(jié)論，為評(píng)估模型的建立提供了依據(jù)。 （3）建立了基于CV值的高等級(jí)公路路基壓實(shí)質(zhì)量評(píng)估模型，包括基于CV值的路基土料壓實(shí)度評(píng)估模型和基于CV值的路基動(dòng)態(tài)彈性模量評(píng)估模型，可用于快速評(píng)估碾壓過(guò)程中的路基壓實(shí)質(zhì)量。 （4）提出了公路路基全工作面壓實(shí)質(zhì)量快速評(píng)估方法。根據(jù)實(shí)時(shí)采集的CV值及建立的路基壓實(shí)質(zhì)量評(píng)估模型，利用Kriging空間插值技術(shù)，可計(jì)算獲得施工全工作面中任意位置處路基的壓實(shí)質(zhì)量，進(jìn)而分析施工質(zhì)量合格率，該方法可有效避免事后抽檢方法的片面性和滯后性，為高等級(jí)公路路基壓實(shí)質(zhì)量的實(shí)時(shí)控制提供了一條新的途徑。
[Abstract]:The quality of roadbed compaction is the key to the long-term safe and stable operation of high-grade highway.The general high-grade highway construction mainly relies on the supervision and the construction personnel to control the compaction process of the roller manually. Because of the interference of human factors, it is easy to cause the problems of extensive management, leakage pressure, underpressure and overpressure, so it is difficult to ensure the construction quality.In addition, the test and evaluation of subgrade compaction quality is usually based on excavated sampling during acceptance.However, the compaction effect of the whole working face can be evaluated by limited test points, which can not truly reflect the compaction quality of the whole working face.At the same time, on the one hand, this method will interfere with the construction work of the working face, on the other hand, because the experimental results can not be obtained quickly, the construction progress will be affected, and it is difficult to realize the real-time feedback on the compaction quality.Therefore, it is necessary to develop a real-time monitoring system for roadbed compaction quality in combination with the characteristics of high-grade highway roadbed compaction construction, which can ensure the subgrade construction quality.It is of great theoretical and practical significance to realize real-time evaluation and timely feedback control of construction quality.The main contents and achievements of this paper are as follows:1) according to the requirement of rolling quality control of high grade highway subgrade, the overall frame and main functions of the real time monitoring system of roadbed compaction quality are designed. The GPS technology and computer network technology are used, and on the basis of the existing achievements of the research group, the main functions of the real time monitoring system for the subgrade compaction quality are designed.The system is developed to realize the fine control of roller track during roadbed compaction, and the real-time monitoring of roller vibration frequency and embankment compaction effect.It overcomes the disadvantages of artificial extensive management and control in the conventional construction process, and can ensure the quality of roadbed compaction construction.Based on the real-time monitoring system of high grade highway roadbed compaction quality, the correlation between compaction monitoring value and conventional compaction quality index (compaction degree, dynamic elastic modulus of roadbed) is analyzed.The conclusion that there is strong linear correlation between CV value and conventional compaction quality index is obtained, which provides a basis for the establishment of evaluation model.The evaluation model of compaction quality of high grade highway roadbed based on CV value is established, including the evaluation model of compaction degree of subgrade soil material based on CV value and the evaluation model of dynamic elastic modulus of roadbed based on CV value.It can be used to evaluate the compaction quality of roadbed.Finally, the paper puts forward a method to evaluate the compaction quality of the whole working face of highway roadbed.According to the CV value collected in real time and the evaluation model of roadbed compaction quality, the compaction quality of roadbed at any position in the whole working face can be calculated by using Kriging space interpolation technology, and the qualified rate of construction quality can be analyzed.This method can effectively avoid the one-sidedness and lag of the post-test method, and provides a new way for the real-time control of the compaction quality of high grade highway subgrade.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U416.1

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