The Functional Mechanism of Soil Nail System
Shearing strength and tensile strength of soil body can almost ignored, but it exists certain structural integrity. After installing soil nail system with certain length and density, soil nail system and soil body can work together. It can cover the shortage of soil body’s strength and form composite soil. soil nail system has the main functions in composite soil. 1. Constraint force. It depends on stiffness, strength and spacial combination form of soil nail system in soil. soil nail system has the function of constraining the deformation of soil body and makes composite soil become a whole. 2. Bearing capacity....
Drilling and Installing Process of Soil Nail
Soil nail is a kind of supporting technology in geotechnical engineering. It drills surrounding rocks with a certain distance, direction and depth, then it is put into the drill hole and at last, grouting and fixing are carried on. Soil nail has the effect of binding, combining and reinforcing surrounding rocks. It helps to improve rocks’ self-intensity and self-stability, lighten self-gravity, ensure safety and stability of projects. 1. Drilling. (1) Before drilling, workers should fix a position and make a mark according to design requirements and stratum conditions. (2) Working places should be flat, solid and have drainage ditch. (3)...
Working Performance of Soil Nail Anchor
The adaptability of soil nail anchor is strong, applicable scope is wide, it can be used in sandy soil, cohesive soil and broken decayed rock, etc. Compared with common slope-protection structures, the features of soil nail anchor are convenience, small work amount, low material cost and good supporting effect. So soil nail anchor is an economic reinforcement method. Soil nail anchor support has small deformation. The biggest horizontal displacement is occurred at the top. Tension distribution in soil nail anchor is uneven, it has discipline of middle big and both ends small. Only soil body has tiny displacement, can soil...
Engineering Measures for Landslide Control
Landslide is a kind of natural phenomenon, referring to that soil and rock mass slides down along slope at weak structural plane or belt under gravity effect and influence of river erosion, underground water activity, rain immersion, earthquake, artificial slope cutting, etc. To avoid landslide bringing loss and destroy, except planting vegetation, engineering measures are more common. 1. Bypassing landslide or changing lines, adopting tunnel excavation to avoid landslide section. 2. Building surface and underground drainage system to eliminate influence soil body’s shearing strength from water. 3. As for sliding force, building weight reduction, counter pressure and retaining engineering to...
Soil Nails for Slope Stability
Retaining and protection of foundation excavation is a supporting, reinforcing and protecting method to guarantee safety of underground structure and surrounding environment. As a structural system, retaining and protection of foundation excavation should meet demand of stability and deformation, that’s also the ultimate limit state and servicing limit state. Ultimate limit state refers to larger scale unstability when supporting structure is damaged, toppled, slid and collapse. While servicing limit state refers to that soil bodies’ deformation influences normal use, but it doesn’t create unstability. So supporting design should have enough safety factors to avoid unstability and then control displacement. As...
Manila Metro Construction
Transportation Department of Philippine plans to promote railway construction in Manila region and extend, rebuild light rail line 2 in the form of PPP. Government is now planning several railway programs, among these, line 5 will connect transportation in different regions and relieve condition of road congestion. At present, 40% of light rail line 2 has not operated from Legarda station to Santolan station. Metro is a speedy, large-volume and energy-saving urban rail traffic system. Its development can not only relieve traffic jam on ground, but also solve employment problem and promote economic growth along the line. Soil nail has...
The difference between soil nails and anchors
Soil nails and anchors have similarities on the surface, but they have different working mechanism. Anchor was divided into the free section and anchoring section along the full length , anchor as the fulcrum of piles or retaining walls in earth retaining structures, it will transmit the lateral earth pressure on the pile or on the retaining wall to the deep soil by its free section. In addition to anchoring segments, the anchor will receive same tension on the free section. But the soil nail suffered tension changes along its entire length. Usually, the tension is big in the middle place and...
First Day: Sinorock in Expomin 2016
Expomin 2016 is ongoing at Espacio Riesco Convention Center, Santiago, Chile and will last from April 25 to 29. Sinorock’s booth is 1B-750. Sinorock exhibition team arrived in Chile on April 24 and arranged exhibition in the afternoon: setting samples, pasting posters, arranging showcases, etc. All the work was proceeded orderly and systematically. We expect to greet every friend in full spirit in the next few days. As expected, the first day of Expomin 2016 was very exciting. Passing crowd came and went like honeybees, and also we had a lot of harvest: new customers and regular customers reached at...
Why Choose Sinorock Soil Nail Anchor
Sinorock soil nail anchor is a kind of drilling grouting anchor bar which combines drilling, grouting, anchoring into one function, can ensure the anchoring effect in complex conditions (rock, soil, fracture zone, etc.) this type of soil nail has features such as reliable, efficient, easy installation. Sinorock soil nail’s drill rod and anchor rod as one part, which can form the anchor hole in weathered rock, broken rock, backfill areas, sand, soil without casing pipe protection, to ensure anchoring and grouting performance. It is easy operation fast and save time, can save about 25% of the workload and reduce engineering...
Soil Nail Wall
Factors effect the slope stability can be divided into internal factors and external factors. Internal factors includes: the rock and soil type and nature of slope, the geological structure of slope,the shape slope and groundwater. External factors include: effects of vibration, climatic conditions, weathering, slope vegetation, human activity and others. Soil nail wall is a relatively new type of structure, it is mainly composed of soil nail, concrete panel and anchor plates. Reinforcement slope within a certain range of soil by regularly arranged soil nails, panels, anchor plate to form a composite structure of wall – soil nail wall which...