侧延伸 meaning in Chinese

lateral extension

When the width of the foundation is smaller , the friction force is firstly increased from zero at the central area of the foundation , then decreased to zero at the edges of the foundation , hence there is a peak ; when the width of the foundation and the thickness of the soft ground is larger , the frication force is almost zero from the central area of the foundation to a certain distance , then increased , at last decreased to zero at the edges of the foundation , therefore there is a peak ; and when the width of the foundation is larger and the thickness of the soft ground is smaller , the friction force is firstly increased from zero at the central area of the foundation in the negative direction , then decreased to zero , so there is a negative peak , then increases in the positive direction , eventually decreased to zero at the edges of the foundation , hence there is a positive peak
当基础宽度较小时，从中心线为零处开始增加，达到峰值后，开始减小，直至基底边缘处为零；当基础宽度和软土地基厚度较大时，从中心线处开始，向外侧延伸一定距离，几乎为零，然后开始增加，达到峰值后，开始减小，直至基底边缘处为零；当基础宽度较大，并且软土地基厚度较小时，从中心线为零处开始反向增加，达到反向峰值后，然后反向减小，减小到零后，逐渐正向增加，达到峰值后，再逐渐减小，直至基底边缘处为零。