the swell-shrinking stress of porous concrete base was also calculated and the predication method of critical temperature difference and the calculation method of joint space under base cracking were put forward
计算了多孔混凝土基层的胀缩应力，提出了临界温差的预测方法和基层开裂时接缝空间的计算方法
以上为机器翻译结果，长、整句建议使用 人工翻译 。