# Mechanical Performance of Curved Link-Slab of Simply Supported Bridge Beam  
[PERSON]  
1 College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China; [EMAIL_ADDRESS] (Y.Z.); [EMAIL_ADDRESS] (S.L.); [EMAIL_ADDRESS] (M.Z.)  
[PERSON]  
1 College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China; [EMAIL_ADDRESS] (Y.Z.); [EMAIL_ADDRESS] (S.L.); [EMAIL_ADDRESS] (M.Z.)  
[PERSON]  
2 Department of Civil Engineering, Ryerson University, Toronto,  
the flexural rigidity of the slab. Then, the authors showed that the newly designed slab has better performance than the traditional design through the static loading tests. [PERSON] and [PERSON] [10] proposed a ductile engineered cementitious composite (ECC) bridge deck connecting plate. The deflection and fatigue properties of the ECC connecting plate were experimentally studied. The research showed that the deflection ability of the ECC connecting plate and the crack width control ability could effectively extend the continuous service life of the bridge deck. [PERSON] and [PERSON] [11] put forward a simplified model of a monolithic jointless bridge, calculated the internal force of the FLS under temperature load through FEM, and simplified the theoretical model. The mechanical properties of the integral jointless bridge under the static load were obtained.  
[PERSON] and [PERSON] [12] applied a new composite-concrete material to the FLS. The results showed that the material has the advantage of not being easily damaged and can increase the FLS life cycle. [PERSON] and [PERSON] [13] applied a new fiber-reinforced composite plastic material to the FLS. It was found that the composite plastic could reduce the corners at both ends of the main beam. The structure of the composite plastic link-slab has the advantages of being resistant to damage and easy to repair. [PERSON] and [PERSON] [14] proposed a new arched link-slab device for bridge decks over piers, which changed the FLS internal force transmission method. Through loading tests, the authors showed that the structure could improve the anti-cracking damage of the bridge deck. [PERSON] and [PERSON] [15] proposed an arched link-slab structure suitable for the deck of hollow slab girder bridges. The numerical simulation was modeled to analyze the mechanical characteristics of the arched link-slab. Proper parameters of the arch span and rise were obtained using theory deduction and numerical calculations. This study verified the effectiveness of the structure of the hollow slab girder arch link-slab to prevent concrete from cracking. [PERSON] and [PERSON] [16] conducted a theoretical analysis of the FLS. The authors also used numerical analysis to study the effect of the slab thickness, surface pavement material, and length of the debonded section on the FLS.  
Many experimental studies and engineering practices have shown that various existing improvement measures can solve the structural defects of the FLS during the operation of the bridge to a certain extent. Given the macroscopic force characteristics of the FLS, the present paper proposes a new type of cast-in-place curved link-slab (CLS). Based on the theoretical derivation and numerical method, the mechanical properties of the CLS and FLS were analyzed and compared. Furthermore, the design parameters of the CLS were optimized using parametric sensitivity analysis.