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The Discussion About Improving the Bearing Capacity of Single Pile for Bored Pile in Sandy and Silt Layer Yuqin Feng1,a, Yinghao Wang1,b 1The school of Architecture and Civil Engineering , Inner Mongolia University of Science & Technology, Baotou 014010, China abtfyq@126.com, bwyh1978@sina.com Keywords: Bored pile, Construction technology, Bearing capacity, Pile end resistance, Reduction factor Abstract.
It also discusses the influence construction technology on pile-end ultimate resistance and the reasonable range of reduction factor of the ultimate resistance.
Single Pile Vertical Ultimate Bearing Capacity Standard Value of 2# Pile Number Soil Name Thickness (m) The Bearing Capacity of Bored Pile Parameter Provided by The Technical Code for Building Pile Foundations The Bearing Capacity of Bored Pile Parameter Provided by The Exploration Departments The Ultimate Bearing Capacity of Pile Foundation (Φ800) qsik (kPa) qpk (kPa) qsik (kPa) qpk (kPa) Qu (kN) 2-1 Miscellaneous Fill 0.5~1.1 2-2 Sandy Silt 3.0~3.8 24 650 25 2-3 Medium Sand 5.0~6.4 45 1500 45 2200 2-4 Clay Silt 5.1~6.7 56 750 55 930 The Bearing Capacity of Bored Pile Parameter Provided by The Technical Code for Building Pile Foundations up∑qsikli=866kN qpkAP=750kN 1616 The Bearing Capacity of Bored Pile Parameter Provided by The Exploration Departments up∑qsikli =867kN qpkAP=1100kN 1967 The Static Load Test Results 1390 According to the data of static load test drew the pile top load Q and settlement S relation curve(Q-S curve).
Bored Pile’S Optional Regrouping in The Supporting Layer and Substratum Number Soil Name Thickness (m) The Bearing Capacity of Bored Pile Parameter Provided by The Technical Code for Building Pile Foundations, pile: L=10m, Φ800 mm The Bearing Capacity of Bored Pile Parameter Provided by The Technical Code for Building Pile Foundations, pile: L=13 m, Φ600 mm up∑qsikli (kN) qpkAP (kN) Qu (kN) up∑qsikli (kN) qpkAP (kN) Qu (kN) 2-3 Medium Sand 5.0~6.4 866 750 1616 2-4 Clay Silt 5.1~6.7 1087 375 1462 Measured Data By Static Load Test 1390 1200 Explain: 1) The settlement of pile length10m is 38.1mm. 2) The settlement of pile length13m is 50.5mm.

The selection of reduction and oxidation catalyst is the key factor of the gas after-treatment process.
Additionally, vehicles’ own parameters (vehicle weight, engine displacement, front projection area, main reduction ratio, and gear reduction ratio and fuel type et al.) need to be considered together with factors above.
And then compare the experimental results with actual data measured on May 24th.
Compare real data of vehicle emissions with forecasting result The basic information of testing vehicle is listed in Table 4.
From Fig. 8, except that value of emissions data from Daoli Twelve Street to Zhaolin Street is far higher than forecasting result, others are satisfying.

Table 4 OCT of different WMA Mix type OCT[℃] Mix type OCT[℃] WMA(A) 121~124 WMA(B) 122~124 WMA(C) 121~123 WMA(D) 108~111 Compared with HMA, the OCT reduction of WMA(A),WMA(B) and WMA(C) in Table.4 are close, it is about 12~15℃, while the reduction of WMA(D) reaches to 26~27℃.
Above data are far less than advertise of additives producers, the reason is that producer’ data are commonly compared with the limit of actual construction.
OCT ranges of all WMA in Table.4 look narrower than that of the basic HMA, In fact, it’s the result that limited number of data is fitted to straight line.
The compactibility of WMA(D) significantly higher than others, and its OCT reduction reaches to 26~27℃.
By means of the equidensity-temperature method, the OCT reduction of WMA(A),WMA(B) and WMA(C) are similar and about 12~15℃, while the reduction of WMA(D) reaches to 26~27℃. ⅳ.

Collection Material Basic Data: This engineering project construction standard, project characteristic and so on.
Technical Data: This engineering project design document, construction organization plan, additional document by each kind of needed materials specification and quality technology target and so on.
Economic Data: Construction drawing budget, construction budget, cost plan and manpower and materials machine expense clear and so on, including: · Folk recipe and foundation engineering cost · Main body structural engineering cost · Costs and so on roofing waterproofing and heat insulation · Decoration repair project cost Functional Analysis and Appraises.
The cost reduction of the decoration engineering is 83 thousand yuans, the cost reduction of the structural engineering is 65 thousand yuans.
It is quite close to the target reduction cost.

Simulation results were validated by experimental data of deep drawing.
To attain such result, tools are modeled by CAD-data.
CAD-data consist of 342 parametric stitches for die that modeled in CATIA V5R19.
According to [3] failure criterion is 25% reduction in sheet thickness.
And then 3D FEM analysis was done with physical beads, and validated by experimental data.

Deng Ju-long, it has been widely used owing to the advantages of less sample data, convenient operation, and high precision of short-term forecasting.
At present, many scholars have proposed a number of GM (1,1) model improved method [1] .But these models do not adequately consider the data anomalies for sequence data abnormal situations, there are many factors that will impact subsidence monitoring data sequence in real life.
When it is bound to be a great deviation, and impact prediction accuracy [2], if the original data sequence model is used to predicted.
For better use of grey model to forecast, sometimes the smoothness of the original data sequence should be improved.
(2) The method is the exponential function to simulate the generated data, the raw data obey a certain distribution, only exception applies to the deformation of the exponential trend changes [6], but it is difficult to consider sequence data on the transition in the trend line, if hopping sequence data (such as index deviation is too large even decreases) is abnormal on the trend line.

The most distinguishing characteristic of TPC was its reaction character at normal temperatures (30℃), which was of great practical significance for energy conservation and pollution reduction.
The most distinguishing characteristic of TPC is its reaction character at normal temperatures (30℃), which is of great practical significance for energy conservation and pollution reduction.
Admixtures Performance of concrete (cm) Admixtures Dosage Slump Fluidity 1 TPC 0.150% 20.0 41×39 2 HW 0.150% 11.8 － 3 HW×1.2 0.180% 21.7 43×45 4 HW×1.1 0.165% 19.5 38×40 Data of the experiment on water-reducing ratio of TPC are in Table 1.
The most distinguishing characteristic of TPC is its reaction character at normal temperatures (30℃), which is of great practical significance for energy conservation and pollution reduction.
For relevant experiment data, see Table 2.

The combination of 5% SF and 20% GGBFS was found to be useful for strength development and reduction of porosity in the AC.
Although several researchers investigated the partial replacement of fly ash [3] and bottom ash [4] instead of quartz rich sand or lime in AC production, unfortunately, up-to-date there are insufficient data available which discuss and examine propertiesof the AC when GGBFS and SF used together.
For both curing periods, the compressive strength data show similar trend of gradual increment along with higher percentage replacement of GGBFS except mixtures C-5SF-10GGBFS and C-0SF-20GGBFS at 28-day curing.
Actual values Summary AC is the highly-effective and energy efficient building material because of weight reduction, better sound absorption, and good insulation due to lower thermal conductivity.
Test results show that the combination of 5% SF and 20% GGBFS was found to be useful for strength development and reduction of porosity in the AC.

Among them, the data noise reduction is an essential link in the data processing[1].
Simulation and measured data, shows that the method is more suitable for landing guidance radar measurement data denoising.
First remove the bad values in the original data with wavelet.
Then, decompose the data with EMD to get n imf component.
Error theory and data processing.

Main Technical Parameters ofφ382 DTH drill We to a large number of domestic and foreign materials at the forefront of DTH drill is introduced as the foundation, according to foreign 12-inch impacter and 15 inches high pressure data related to the product sample as well as the development of domestic φ382 (15 inches) paper summarizes DTH drill test data, and makes references to supporting the use of high pressure DTH drilling rig based numerical wind pressure, gas consumption, etc, its main technical parameters of limit index calculation is as follows: 2.1 Bit impact energy According to materials, drilling alloy tooth broken rock column, every minimal energy is 14 joule per tooth, inherit the maximum energy of 72 joules/tooth, the tooth bit each column energy can be in 14-72 (joules/teeth), the impact energy calculation is reliable.
Selection according to the data of 12 inches impacter, φ382 DTH drill impact frequency of f = 1000 times/min. 2.3 Bit impact on wave resistance of drill bits and reaction For drill bit broken rock power with the aid of kinetic energy from the percussive piston, produced by stress wave riveting on the drill body inlay alloy fractured rock.
Wasn't a shock failure process, is a kind of repeated impact, the overload fatigue, this requires the strength of the material and plastic toughness better comprehensive index, namely main body material fatigue limit, plasticity index, elongation, reduction of area) and plane strain fracture toughness (i.e., reflecting the material resists the ability of crack instability propagation speed).
Table 3 20CrMnSiNi2MoA Material Composition C Mn Cr Si Mo Ni P S V 0.17-0.22 1.21-1.52 0.32-0.44 1.32-1.72 0.31-0.44 1.64-2.10 ≤0.018 ≤0.018 0.11-0.16 Table 4 20CrMnSiNi2MoA Mechanical Properties Tensile Strength [MPa] yield Strength [MPa] Elongation [%] Reduction of Area [%] Impact Energy Akv [J] Hardness [HRC] ≥1608 ≥1180 ≥14 ≥48 ≥36 44-49 Developed by large diameter DTH drill material 20CrMnSiNi2MoA compared with similar foreign products materials of 4330 mod, and are shown in table 5: Table 5 20CrMnSiNi2MoA Material and 4330mod Material Comparison Table 20CrMnSiNi2MoA 4330mod Difference between Tensile Strength [MPa] 1608 1350 +258 yield Strength [MPa] 1180 1060 +120 Elongation [%] 14 17 -3 Reduction of Area [%] 48 54 -6 Impact Energy Akv [J] 36 60 -24 From table 5 shows that the development of new domestic large diameter high pressure DTH bit 20CrMnSiNi2MoA materials on the tensile strength and yield strength is higher than similar foreign products
Data of this study is to solve the production actual problem, and to promote the domestic and foreign related enterprise development of large diameter high pressure drill products, play a certain reference function. 5.