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英语翻译
prestressed concrete
mild-steel bars are used in ordinary reinforced concrete beams to overcome the tensile weakness of concrete.another way of overcoming the weakness is by prestressing the contrete so as to induce in its conpression stresses before it is subject to the normal tensile stresses due to bending.when the beam is loaded and bending occurs,the bending tensile stress is neutralized by the prestressing compression so that no actual tensile stress develops.in this way the concrete is used more efficiently and no tensile cracks occur as they do in ordinary reinforced concrete.this principle is illustrated in Figure1.
prestressed concrete
mild-steel bars are used in ordinary reinforced concrete beams to overcome the tensile weakness of concrete.another way of overcoming the weakness is by prestressing the contrete so as to induce in its conpression stresses before it is subject to the normal tensile stresses due to bending.when the beam is loaded and bending occurs,the bending tensile stress is neutralized by the prestressing compression so that no actual tensile stress develops.in this way the concrete is used more efficiently and no tensile cracks occur as they do in ordinary reinforced concrete.this principle is illustrated in Figure1.
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