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Soil-cement in the foundation pit of the application of engineering analysis
= (1xO.8712 + lx0.8x1.2 ~ x2 +0.8 x1.67 (12x2.11 = 2.52mWy = 2.51/1.6 = 1.575m set the maximum bending moment is.. The l/2rho2ka = 1/2r (h7.4) 2kp (zero shear) is ho2 =- kpIka (h: -7.4) 2 = 9 (ho-7.41ho - 11.1mMmax = l/6rho3k0-1, 6r (7.4) 3kp = 1/6x19.9xl1.1. x0.3333-1/6x19.9 × (11.1-7.4) x3 = 15l1.84-5O4 = 10o7.99kN · nl = rh + Mmax / wy = 19.9xl1.1 +1007.99 / 1.575 = 860.88kN / m = 0.86MPa1.0MPa in the supporting structure design, if the foundation of physical and mechanical parameters values are not accurate, Actual results will have a huge impact. test data show that: the difference between the value of the friction angle 5o, active earth pressure P will be a difference of 10; the original soil after excavation of Ca value of C value, the difference is even greater. This construction process is different, the soil physical and mechanical parameters of the support structure design choice is the key. .4 Construction Quality Control (1) pile construction in strict accordance with specification standards. pile parameters selected according to design requirements (2) to ensure verticality: Micro-Level leveling, deep mixer to ensure flatness and orientation of the vertical frame on the ground, vertical oriented frame deflection is not than 1.5H%. · 182 · (3) to ensure the accuracy of pile: the use of total station pile positioning, and design of the adjacent two-bit error control within the 20ram (4) by mechanical rotation and improved automatic control and electronics that measure to ensure the uniformity of mixing and enhance the other hand, take three deep mixing machine is not the same start,
######## oakley sunglasses, to avoid the frequent downtime (5) four four-jet mixing process to ensure the continuity of the consolidation of the body, to avoid breaking pile phenomenon, and that the pile diameter is not less than 500mm. (6) For the case of a large rock or other obstacle zone (such as the northeast corner of site, north central), artificial rock excavation or obstruction removal, backfill , and then deep mixing pile construction (7) construction records with the person responsible for recording the depth deviation no larger than 50mm; time recording error no larger than 2s. construction problems that arise and deal with the situation, are accurately recorded, so that meta-analysis . mixing pile construction shall, before the old site and shallow foundation stone cleaned, but also pay attention to the selection in the ground under certain conditions, the quality of mixing and stirring the pile pile technical parameters and construction process is closely related to the cement slurry mixing evenly, to ensure uninterrupted slurry. shall not interrupt the process of drilling and enhanced shotcrete. if undesirable, to take immediate remedial measures during the construction of deep mixing cement piles attention pile verticality, the effective length of the pile. As the soil is the roving, although the intensity of soil-cement high,
Oakley sunglasses sale, but also prone to leakage, so strict control of construction of vertical pile, cement pile and spray process planning and the pile is the time interval, only to strengthen the effect of water,
tory burch outlet, the construction of four two-spray process on the construction of two next 5 Foundation strengthening works effects of the project excavation and reinforcement works in 20o3 at the end of construction is completed from the foundation date of the excavation and support pit exposure time more than six months. pit around the adjacent buildings, roads are still not subject to any destructive effects; deep cement mixing pile curtain sealing, the sealing effect between piles are ideal, beginning in September 2004 in the basement and foundation construction not subject to groundwater problems, have the structure of earth excavation and support the smooth construction, engineering, stipulated in the contract duration (20o6 June 1 to be completed on schedule; the construction quality of the whole project design drawings and fully meet the relevant national standards requirements to achieve a means, the construction is to ensure that A bracing design is reasonable, determine the success or failure of excavation. How to determine whether the design is reasonable,
replica oakley sunglasses, there are two criteria: first, ensuring the safety of the pit and the surrounding environment. The second is the lowest project cost as long as we carry out a program optimization, program feasibility studies, design the continuous improvement of computational theory, construction technology continues to improve, active construction of information, our deep excavation will enter a new period of vigorous development.
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