Abstract: this paper studies on the influence of temperature effect on the alignment and cable force of main beam in the construction process of cable-stayed bridge. (1) according to the basic theory of heat conduction, the temperature fields of main beam and cables are analyzed, and a calculation method for simulating the plane temperature field of cable-stayed bridge is put forward. This method can easily and accurately predict the temperature field distribution of cables and main beam. (2) based on the calculated temperature field distribution, a method to correct the influence of temperature effect on undone segments according to the actual alignment of existing segments is put forward. Taking a cable-stayed bridge as an example, the results calculated by the temperature field simulation method in this paper are very close to the actual temperature data. Key words: highway bridge; plane temperature field simulation; temperature effect correction method; cable force

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