###### Abstract  
This paper presents the results of shake table tests of a scaled long span cable-stayed bridge (CSB). The design principles of the scaled CSB are first introduced. The first six in-plane modes are then identified by the stochastic subspace identification (SSI) method. Furthermore, shake table tests of the CSB subjected to the non-pulse near-field (NNF) and velocity-pulse near-fault (PNF) ground motions are carried out. The tests indicated that: (1) the responses under longitudinal uniform excitation are mainly contributed by antisymmetric modes; (2) the maximum displacement of the tower occurs on the tower top node, the maximum acceleration response of the tower occurs on the middle cross beam, and the maximum bending moment of the tower occurs on the bottom section; (3) the deformation of the tower and girder subjected to uniform excitation is not always larger than that subjected to non-uniform excitation, and therefore the non-uniform case should be considered in the seismic design of CSBs.  
shake table test; cable-stayed bridge; near-fault motion; velocity pulse; non-uniform excitation +
Footnote †: journal: Applied Sciences  
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Footnote 1: College of Civil Engineering, Fuzhou University, Fuzhou 350108, China; [EMAIL_ADDRESS] (G.F.); [EMAIL_ADDRESS] (Z.L.)  
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carried out the static and dynamic field load test on the long span Nissibi CSB. [PERSON] et al. designed a 1/100 physical model of the Wuhan Yangtze River Bridge (three-tower CSB) and conducted a shake table test of it [6]. [PERSON] et al. studied the seismic response of a floating CSB under earthquake excitation using a shake table test [7]. [PERSON] et al. carried out a shake table test of a half-bridge scale model to study the longitudinal seismic responses [8]. [PERSON] et al. designed a 1/70-scale bridge model of a super long-span CSB with a central span of 1400 m. The dynamic characteristics and seismic responses of the full bridge model with and without inelastic tower links were tested [9].  
Since the length of long-span CSBs is comparable to the seismic wavelength, it is intuitively clear that all supports should be excited by the non-uniform motions [10]. [PERSON] and [PERSON] studied the seismic response of CSBs under non-uniform and uniform excitations [11]. It found that the cable axial force and pylons shear were amplified up to 1.4 and 1.48, respectively. [PERSON] et al. analyzed the seismic response of a super-long span CSB induced by ground motions in different sites considering soil-structure interaction [12]. [PERSON] et al. studied the seismic response of pile groups supporting long-span CSB subjected to multi-support excitations using shake table tests [13].  
Near-fault (NF) ground motions usually caused more damages to structures [14; 15]. Therefore, more attention has been given to the damage induced by NF ground motions. [PERSON] et al. found that significant residual displacements can be caused by NF ground motions [16]. [PERSON] et al. found that suspension bridges experienced higher displacements and internal forces when subjected to NF ground motions [17]. The main reason is the high velocity pulse [18]. The velocity pulse contains a great amount of energy that is expected to be imposed on the structure in a very short time interval and causes severe damage in the structure [19].  
As mentioned before, NF ground motions has a great influence on the seismic performance of CSBs. In particular, the effect of velocity pulse is very significant. However, so far, the influence of NF ground motions on CSB are mostly studied by numerical methods, while the shake table tests are limited. In this paper, shake table tests on a 1/100 scale CSB with a main span of 680 m was carried out. The design, construction, instrumentation, and loading protocol of the test model were described. Furthermore, the seismic performances when suffered from uniform and non-uniform NF ground motions were tested and discussed.