沉降量

对目前采用的最终沉降量计算方法进行了分析比较，通过工程实例，验证了割线模量法计算最终沉降量的可行性，提出了宜采用割线模量法估计最终沉降量的建议。

The following paper analyzes nowadays calculating method of final ground settlement , tests and verifies the feasibility of calculating final settlement by secant modulus method , poses a suggestion of adopting secant modulus method to estimate final settlement .

应用灰色模型（G，M）预测软土路基沉降量

On the Application of Grey Model in Settlement Prediction of Soft Soil Foundation

改进BP神经网络在软土地基沉降量中的应用

The application of improved BP neural network in soft foundation settling volume prediction

BP神经网络-灰色系统联合模型预测软基沉降量

Prediction of soft ground settlement based on BP neural network-grey system united model

土工格栅处理软土路基沉降量的BP神经网络预测

Prediction of Soft Roadbed Settlement with Geogrid Based on BP Neural Network Model

灰色模型（GM）在软土路基沉降量预测中的应用研究

Study of the application of grey model in the prediction of soft soil roadbed settlement

使用BP神经网络插值方法对灰色数据进行了预处理，进而建立了预测软基沉降量的BP神经网络和灰色系统联合模型。

The establishment of the BP artificial neural network and grey system united model and grey data pretreatment depends on BP artificial neural network interpolate .

对Watts等构造沉降量计算公式的修正

A revision to watts 's formula used to calculate tectonic subsidence

理论和实践均表明：CM长短桩复合地基可以有效提高地基承载力，减小建筑物沉降量，降低差异沉降。

Theoretical study and engineering practice show that it can effectively improve foundation bearing capacity , reduce building settlement , and cut down the settlement difference of foundation slab .

结合上海梅山堆料场地的地基处理工程实例，利用灰色理论建立等时距GM（1,1）模型，对堆料场地地基沉降量进行预测，取得了较高的准确度；

Through the even time interval GM ( 1,1 ) model , the authors predict the soft ground sedimentation in the project of Meishan ground in Shanghai City .

本文用ANSYS软件计算高速铁路高路堤的沉降量和用灰色理论预测所得出的高速铁路高路堤工后沉降，对工程实际有指导意义。

Using ANSYS to calculate the settlement of high embankment of the high-speed railway and using gray system to predict the settlement of high embankment have instruction significance to the actual engineer .

全年TN沉降量为7.57kgN/hm2，TIN为沉降主体，占84.54%；

In conclusion , the TN deposition amount in a year was 7.57 kg N / hm2 , TIN was the main deposition body and its proportion was 84.54 % ;

为了预测高速公路路基最终沉降量，首先依据影响软土路基沉降的因素选取参数建立了BP神经网络预测最终沉降量模型。

In order to forecast the final settlement of highway roadbed , BP neural networks predicting final ( settlement ) is established . The parameters are fetched based on the settlement influence factors of soft soil roadbed .

目前建筑物的最大沉降量为40mm。

Up to now , the maximum settlement of 40 mm of main structure was observed .

CFG桩因其承载力高、沉降量小、造价低、工期短等优点在软土加固工程中得到广泛应用。

In projects like this , CFG-Pile is widely used . It is known for its high bearing capacity , small settling amount , low cost and short field time .

本文还使用弹性土堤法对沉降量进行了计算，结果与FLAC数值计算结果非常接近。

The Elastic Subgrade is also employed to calculate the settlement the natural ground and the result is very close to the result of FLAC numerical method .

设计部门要求处理后的剩余沉降量不大于50mm。

Not more than 50 mm of residual ground settlement after treatment is specified by the design department .

为此，在灰色预测最终沉降量的基础上，采用有限元方法，通过二步优化反演分析了Duncan-Chang模型中的K、K（ur）参数。

In this paper , based on the gray forecasting final settlement , two parameters K and ~ of the Dun can-Chang model were back analyzed through two-step optimization back analyses using the FEM method .

桩基最终沉降量的Gan-Chen模式计算方法

Calculating Method for Final Settlement of Pile Foundation by Gan-Chen Model

利用实测的桩基静载试验数据，用灰色系统理论建立桩基沉降量的灰色GM（1,1）预测模型，可以模拟桩基静载试验Ps曲线的未知部分。

A GM ( 1,1 ) model is established by Gray Theory using observation data of loading tests for pile . The model can be used to predict the unknown part of p ? s curve of pile loading tests .

其压实有效深度达1m，可使土体的沉降量和孔隙比在施工过程中大大减少，加速土体固结沉降；

With this method , the effective compaction depth can be achieved 1 meter to further reduce the settlement volume and void ratio of soil during the construction and quicken the consolidated settlement .

考虑到群桩效应，通过桩基础的沉降量来计算其效应，而且单桩和群桩的可靠度由Monte-carlo法来确定。

Considering the effects of group piles , the action effect is calculated by the settlement of pile foundation and reliability index of single pile as well as group piles is determined by Monte-Carlo method .

分析结果表明，若管棚施工从钻孔到注浆的时间控制在2h以内，则地表最大沉降量小于5mm；

Analysis results show that when the construction time of drilling and grouting can be controlled within 2 h , the maximum ground surface settlement is less than 5 mm .

增加嵌岩深度可以有效减少群桩桩基沉降量和水平位移，嵌岩深度超过5D时，再增加嵌岩深度对群桩稳定性没有明显的改善作用。

Increasing rock-socketed depth can effectively reduce settlement and horizontal displacement of pile group . If rock-socketed depth gets more than 5D , increasing rock-socketed depth will have no obvious improvement to stabilize pile group .

而目前规范给出的CFG桩复合地基承载力和沉降量设计方法有诸多假定条件，导致计算结果，尤其是沉降量与实际有较大出入。

However , the design methods of bearing capacity and settlement of CFG piles composite foundation provided by active criterions are set up on some assumed conditions , and the results , especially settlement value are much different from the fact .

在此基础上，建议在采用传统的双曲线法推算软土地基最终沉降量的同时，可运用Asaoka推算法进行校核。

It is suggested that the final settlement of soft soil ground can be calculated by using the traditional hyperbolic method and verified by using the Asaoka method .

通过对现场载荷试验的数据，利用土的沉降量s与变形模量E0之间的关系，推导出模拟试验时的基础沉降量s与基础宽度b之间的关系式。

This thesis deduces the relationship module between the base subsidence ( S ) and the base width ( B ) in the model experiment on the basis of the results from load experiments and the relationship between earth subsidence ( S ) and variable modulus .

还原态的氮化物（NH3，NH4+-N）占总氮沉降量65%。

Reduced nitrogen compound ( NH3 , NH4 + - N ) occupied 65 % of the total nitrogen deposition amount . Therefore , the contribution of atmospheric nitrogen deposition should be considered when studying the forest soil acidification and management .

算例分析结果表明：基于常用的Jaumann率型本构关系的大变形固结分析得到的路基沉降量、侧向位移和孔压等均偏大于基于Truesdell率型本构关系时的相应结果。

The results show that the settlement , lateral displacement and pore-water pressure calculated by traditional method are greater than those by the method based on the constitutive relation using Truesdell stress rate .

结合工程实例，重点阐述了施工过程中值得注意的几个方面，经观测，加固后的地基沉降量仅为1.5cm，符合设计要求。

Combined with some engineering example , some noticeable aspects , By observation , the settlement value of foundation after reinforcing is only 1.5 cm , and it is reaches the requirement of design .